SEC Info℠  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Hexion Inc. – ‘10-Q’ for 3/31/18 – ‘EX-101.LAB’

On:  Monday, 5/14/18, at 4:55pm ET   ·   For:  3/31/18   ·   Accession #:  13239-18-15   ·   File #:  1-00071

Previous ‘10-Q’:  ‘10-Q’ on 11/14/17 for 9/30/17   ·   Next:  ‘10-Q’ on 8/7/18 for 6/30/18   ·   Latest:  ‘10-Q’ on 11/12/21 for 9/30/21   ·   1 Reference:  By:  Hexion Inc. – ‘10-K’ on 3/10/21 for 12/31/20

Find Words in Filings emoji
 		  in    Show  and   ↓Hints

  As Of               Filer                 Filing    For·On·As Docs:Size

 5/14/18  Hexion Inc.                       10-Q        3/31/18   73:11M

Quarterly Report   —   Form 10-Q   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML    758K 
 2: EX-10.1     2018 Incentive Compensation Plan                    HTML     40K 
 3: EX-10.2     Deer Park Site Servces, Utilities, Materials and    HTML    244K 
                Facilities Agreement                                             
 4: EX-10.3     Moerdijk Vad Site Services, Utilities, Materials    HTML    258K 
                and Facilities Agreement                                         
 5: EX-10.4     Pernis Vad Site Services, Utilities, Materials and  HTML    269K 
                Facilities Agreement                                             
 6: EX-10.5     Pernis Beri Site Services, Utilities, Materials     HTML    271K 
                and Facilities Agreement                                         
 7: EX-10.6     Assignment and Assumption of Deer Park Ground       HTML     35K 
                Lease and Extension                                              
 8: EX-10.7     Assignment and Extension of Amended and Restated    HTML     37K 
                Agreement of Pernis Sublease                                     
 9: EX-10.8     First Amended and Restated Moerdijk Agreement of    HTML     71K 
                Lease                                                            
10: EX-10.9     Extension of Amended and Restated Agreement of      HTML     31K 
                Moerdijk Lease                                                   
11: EX-31.1(A)  Section 302 CEO Certification                       HTML     29K 
12: EX-31.1(B)  Section 302 CFO Certification                       HTML     29K 
13: EX-32.1     Section 906 CEO & CFO Certification                 HTML     25K 
20: R1          Document and Entity Information Document            HTML     41K 
21: R2          Condensed Consolidated Balance Sheets               HTML    146K 
22: R3          Condensed Consolidated Balance Sheets               HTML     42K 
                (Parentheticals)                                                 
23: R4          Condensed Consolidated Statements of Operations     HTML     61K 
24: R5          Condensed Consolidated Statements of Comprehensive  HTML     34K 
                Income                                                           
25: R6          Condensed Consolidated Statements of Cash Flows     HTML    110K 
26: R7          Condensed Consolidated Statement of Equity          HTML     35K 
                (Deficit)                                                        
27: R8          Background and Basis of Presentation                HTML     28K 
28: R9          Significant Accounting Policies                     HTML    124K 
29: R10         Restructuring (Notes)                               HTML     51K 
30: R11         Related Party Transactions                          HTML     77K 
31: R12         Fair Value                                          HTML     52K 
32: R13         Debt Obligations                                    HTML     78K 
33: R14         Commitments and Contingencies                       HTML     72K 
34: R15         Pension and Postretirement Expense                  HTML     59K 
35: R16         Disposition (Notes)                                 HTML     26K 
36: R17         Segment Information                                 HTML     91K 
37: R18         Changes in Accumulated Other Comprehensive Income   HTML     44K 
                Level 1 (Notes)                                                  
38: R19         Income Taxes (Notes)                                HTML     30K 
39: R20         Guarantor Non-Guarantor Subsidiary Financial        HTML    577K 
                Information                                                      
40: R21         Significant Accounting Policies Level 2 (Policies)  HTML    177K 
41: R22         Significant Accounting Policies Level 3 (Tables)    HTML    114K 
42: R23         Restructuring (Tables)                              HTML     48K 
43: R24         Related Party Transactions Level 3 (Tables)         HTML     70K 
44: R25         Fair Value Level 3 (Tables)                         HTML     45K 
45: R26         Debt Obligations Level 3 (Tables)                   HTML     75K 
46: R27         Commitments and Contingencies Level 3 (Tables)      HTML     53K 
47: R28         Pension and Postretirement Expense Level 3          HTML     59K 
                (Tables)                                                         
48: R29         Segment Information Level 3 (Tables)                HTML     85K 
49: R30         Changes in Accumulated Other Comprehensive Income   HTML     44K 
                Level 3 (Tables)                                                 
50: R31         Guarantor Non-Guarantor Subsidiary Financial        HTML    575K 
                Information Level 3 (Tables)                                     
51: R32         Background and Basis of Presentation Level 4        HTML     23K 
                (Details) - Number of Reportable Segments                        
52: R33         Significant Accounting Policies Level 4 (Details)   HTML     94K 
53: R34         Restructuring Restructuring and Cost Reduction      HTML     44K 
                Programs (Details)                                               
54: R35         Restructuring Changes in liabilities recorded       HTML     30K 
                related to contract termination costs and ARO                    
                (Details)                                                        
55: R36         Related Party Transactions Level 4 (Details)        HTML     69K 
56: R37         Fair Value Level 4 (Details) - Fair Value of Debt   HTML     35K 
57: R38         Debt Obligations Level 4 (Details)                  HTML     77K 
58: R39         Commitments and Contingencies Level 4 (Details) -   HTML     68K 
                Environmental Liabilities                                        
59: R40         Commitments and Contingencies Level 4 (Details) -   HTML     27K 
                Non-Environmental Liabilities                                    
60: R41         Pension and Postretirement Expense Level 4          HTML     44K 
                (Details) - Components of net pension and                        
                postretirement expense benefit                                   
61: R42         Disposition (Details)                               HTML     26K 
62: R43         Segment Information Level 4 (Details) - Revenues    HTML     45K 
                by Segment                                                       
63: R44         Segment Information Level 4 (Details) - EBITDA by   HTML     30K 
                Segment                                                          
64: R45         Segment Information Level 4 (Details) -             HTML     58K 
                Reconciliation of Segment EBITDA to Net Income                   
65: R46         Changes in Accumulated Other Comprehensive Income   HTML     42K 
                Level 4 (Details) - Summary of Changes in                        
                Accumulated Other Comprehensive Income                           
66: R47         Income Taxes (Details)                              HTML     28K 
67: R48         Guarantor Non-Guarantor Subsidiary Financial        HTML     34K 
                Information Level 4 (Details) - Additional                       
                Information                                                      
68: R49         Guarantor Non-Guarantor Subsidiary Financial        HTML    208K 
                Information Level 4 (Details) - Consolidating                    
                Balance Sheets                                                   
69: R50         Guarantor Non-Guarantor Subsidiary Financial        HTML     97K 
                Information Level 4 (Details) - Consolidating                    
                Statement of Operations                                          
70: R51         Guarantor Non-Guarantor Subsidiary Financial        HTML     94K 
                Information Level 4 (Details) - Consolidating                    
                Statement of Cash Flows                                          
72: XML         IDEA XML File -- Filing Summary                      XML    118K 
71: EXCEL       IDEA Workbook of Financial Reports                  XLSX     77K 
14: EX-101.INS  XBRL Instance -- msc-20180331                        XML   3.42M 
16: EX-101.CAL  XBRL Calculations -- msc-20180331_cal                XML    188K 
17: EX-101.DEF  XBRL Definitions -- msc-20180331_def                 XML    820K 
18: EX-101.LAB  XBRL Labels -- msc-20180331_lab                      XML   1.37M 
19: EX-101.PRE  XBRL Presentations -- msc-20180331_pre               XML    947K 
15: EX-101.SCH  XBRL Schema -- msc-20180331                          XSD    171K 
73: ZIP         XBRL Zipped Folder -- 0000013239-18-000015-xbrl      Zip    245K

‘EX-101.LAB’   —   XBRL Labels — msc-20180331_lab

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL Document Created with Wdesk from Workiva -->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" xlink:type="simple"/>
<link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" xlink:type="simple"/>
<link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" xlink:type="simple"/>
<link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" xlink:type="simple"/>
<link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" xlink:type="simple"/>
<link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" xlink:type="simple"/>
<link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" xlink:type="simple"/>
<link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
<link:label id="lab_msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract_732CADADF7DCC079649C3BAF5C2F633D_label_en-US" xlink:label="lab_msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract_732CADADF7DCC079649C3BAF5C2F633D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Guarantor Non Guarantor Subsidiary Financial Information [Abstract] </link:label>
<link:label id="lab_msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract_732CADADF7DCC079649C3BAF5C2F633D_documentation_en-US" xlink:label="lab_msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract_732CADADF7DCC079649C3BAF5C2F633D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Guarantor Non Guarantor Subsidiary Financial Information [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract" xlink:label="loc_msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract_732CADADF7DCC079649C3BAF5C2F633D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract_732CADADF7DCC079649C3BAF5C2F633D" xlink:to="lab_msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract_732CADADF7DCC079649C3BAF5C2F633D" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfGuaranteeObligationsTable_D10919108DAFC1B02C523BAF5C2FECBE_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfGuaranteeObligationsTable_D10919108DAFC1B02C523BAF5C2FECBE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Guarantor Obligations [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfGuaranteeObligationsTable_D10919108DAFC1B02C523BAF5C2FECBE_label_en-US" xlink:label="lab_us-gaap_ScheduleOfGuaranteeObligationsTable_D10919108DAFC1B02C523BAF5C2FECBE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Guarantor Obligations [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfGuaranteeObligationsTable" xlink:label="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_D10919108DAFC1B02C523BAF5C2FECBE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfGuaranteeObligationsTable_D10919108DAFC1B02C523BAF5C2FECBE" xlink:to="lab_us-gaap_ScheduleOfGuaranteeObligationsTable_D10919108DAFC1B02C523BAF5C2FECBE" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentAxis_9C6951F63A6525B30C2C3BAF5C2F6473_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_9C6951F63A6525B30C2C3BAF5C2F6473" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Axis] </link:label>
<link:label id="lab_us-gaap_DebtInstrumentAxis_9C6951F63A6525B30C2C3BAF5C2F6473_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_9C6951F63A6525B30C2C3BAF5C2F6473" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_9C6951F63A6525B30C2C3BAF5C2F6473" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentAxis_9C6951F63A6525B30C2C3BAF5C2F6473" xlink:to="lab_us-gaap_DebtInstrumentAxis_9C6951F63A6525B30C2C3BAF5C2F6473" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentNameDomain_EDAE311574FA82E203BB3BAF5C2F0F1D_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_EDAE311574FA82E203BB3BAF5C2F0F1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Name [Domain] </link:label>
<link:label id="lab_us-gaap_DebtInstrumentNameDomain_EDAE311574FA82E203BB3BAF5C2F0F1D_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_EDAE311574FA82E203BB3BAF5C2F0F1D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Name [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_EDAE311574FA82E203BB3BAF5C2F0F1D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_EDAE311574FA82E203BB3BAF5C2F0F1D" xlink:to="lab_us-gaap_DebtInstrumentNameDomain_EDAE311574FA82E203BB3BAF5C2F0F1D" xlink:type="arc"/>
<link:label id="lab_msc_A6625FirstPrioritySeniorNotesDue2020Member_D5631585C227F393AF8F3BAF5C2FAFFF_terseLabel_en-US" xlink:label="lab_msc_A6625FirstPrioritySeniorNotesDue2020Member_D5631585C227F393AF8F3BAF5C2FAFFF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 6.625% First Priority Senior Notes Due 2020 [Member] </link:label>
<link:label id="lab_msc_A6625FirstPrioritySeniorNotesDue2020Member_D5631585C227F393AF8F3BAF5C2FAFFF_label_en-US" xlink:label="lab_msc_A6625FirstPrioritySeniorNotesDue2020Member_D5631585C227F393AF8F3BAF5C2FAFFF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 6.625% First Priority Senior Notes Due 2020 [Member] </link:label>
<link:label id="lab_msc_A6625FirstPrioritySeniorNotesDue2020Member_D5631585C227F393AF8F3BAF5C2FAFFF_documentation_en-US" xlink:label="lab_msc_A6625FirstPrioritySeniorNotesDue2020Member_D5631585C227F393AF8F3BAF5C2FAFFF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 6.625% First Priority Senior Notes Due 2020 [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_A6625FirstPrioritySeniorNotesDue2020Member" xlink:label="loc_msc_A6625FirstPrioritySeniorNotesDue2020Member_D5631585C227F393AF8F3BAF5C2FAFFF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_A6625FirstPrioritySeniorNotesDue2020Member_D5631585C227F393AF8F3BAF5C2FAFFF" xlink:to="lab_msc_A6625FirstPrioritySeniorNotesDue2020Member_D5631585C227F393AF8F3BAF5C2FAFFF" xlink:type="arc"/>
<link:label id="lab_msc_A10.00FirstPrioritySeniorNotesDue2020Member_D7B129B374FB9EE3152B3BAF5C2FC0F2_terseLabel_en-US" xlink:label="lab_msc_A10.00FirstPrioritySeniorNotesDue2020Member_D7B129B374FB9EE3152B3BAF5C2FC0F2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 10.00% First Priority Senior Notes Due 2020 [Member] </link:label>
<link:label id="lab_msc_A10.00FirstPrioritySeniorNotesDue2020Member_D7B129B374FB9EE3152B3BAF5C2FC0F2_label_en-US" xlink:label="lab_msc_A10.00FirstPrioritySeniorNotesDue2020Member_D7B129B374FB9EE3152B3BAF5C2FC0F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 10.00% First Priority Senior Notes Due 2020 [Member] </link:label>
<link:label id="lab_msc_A10.00FirstPrioritySeniorNotesDue2020Member_D7B129B374FB9EE3152B3BAF5C2FC0F2_documentation_en-US" xlink:label="lab_msc_A10.00FirstPrioritySeniorNotesDue2020Member_D7B129B374FB9EE3152B3BAF5C2FC0F2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 10.00% First Priority Senior Notes Due 2020 [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_A10.00FirstPrioritySeniorNotesDue2020Member" xlink:label="loc_msc_A10.00FirstPrioritySeniorNotesDue2020Member_D7B129B374FB9EE3152B3BAF5C2FC0F2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_A10.00FirstPrioritySeniorNotesDue2020Member_D7B129B374FB9EE3152B3BAF5C2FC0F2" xlink:to="lab_msc_A10.00FirstPrioritySeniorNotesDue2020Member_D7B129B374FB9EE3152B3BAF5C2FC0F2" xlink:type="arc"/>
<link:label id="lab_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_0BDB0F54C0A25AEE06023BD2F47A046D_terseLabel_en-US" xlink:label="lab_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_0BDB0F54C0A25AEE06023BD2F47A046D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 10.375% First-Priority Senion Secured Notes due 2022 [Member] </link:label>
<link:label id="lab_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_0BDB0F54C0A25AEE06023BD2F47A046D_label_en-US" xlink:label="lab_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_0BDB0F54C0A25AEE06023BD2F47A046D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 10.375% First-Priority Senion Secured Notes due 2022 [Member] </link:label>
<link:label id="lab_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_0BDB0F54C0A25AEE06023BD2F47A046D_documentation_en-US" xlink:label="lab_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_0BDB0F54C0A25AEE06023BD2F47A046D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 10.375% First-Priority Senion Secured Notes due 2022 [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member" xlink:label="loc_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_0BDB0F54C0A25AEE06023BD2F47A046D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_0BDB0F54C0A25AEE06023BD2F47A046D" xlink:to="lab_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_0BDB0F54C0A25AEE06023BD2F47A046D" xlink:type="arc"/>
<link:label id="lab_msc_A13.75SeniorSecuredNotesdue2022Member_6F5E5126F9EE255E53093BD37FF5AB69_terseLabel_en-US" xlink:label="lab_msc_A13.75SeniorSecuredNotesdue2022Member_6F5E5126F9EE255E53093BD37FF5AB69" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 13.75% Senior Secured Notes due 2022 [Member] </link:label>
<link:label id="lab_msc_A13.75SeniorSecuredNotesdue2022Member_6F5E5126F9EE255E53093BD37FF5AB69_label_en-US" xlink:label="lab_msc_A13.75SeniorSecuredNotesdue2022Member_6F5E5126F9EE255E53093BD37FF5AB69" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 13.75% Senior Secured Notes due 2022 [Member] </link:label>
<link:label id="lab_msc_A13.75SeniorSecuredNotesdue2022Member_6F5E5126F9EE255E53093BD37FF5AB69_documentation_en-US" xlink:label="lab_msc_A13.75SeniorSecuredNotesdue2022Member_6F5E5126F9EE255E53093BD37FF5AB69" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 13.75% Senior Secured Notes due 2022 [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_A13.75SeniorSecuredNotesdue2022Member" xlink:label="loc_msc_A13.75SeniorSecuredNotesdue2022Member_6F5E5126F9EE255E53093BD37FF5AB69" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_A13.75SeniorSecuredNotesdue2022Member_6F5E5126F9EE255E53093BD37FF5AB69" xlink:to="lab_msc_A13.75SeniorSecuredNotesdue2022Member_6F5E5126F9EE255E53093BD37FF5AB69" xlink:type="arc"/>
<link:label id="lab_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_BE52FB9D8C450642AAE93BAF5C2FE2A9_terseLabel_en-US" xlink:label="lab_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_BE52FB9D8C450642AAE93BAF5C2FE2A9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 9.00% Second-Priority Senior Secured Notes Due 2020 [Member] </link:label>
<link:label id="lab_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_BE52FB9D8C450642AAE93BAF5C2FE2A9_label_en-US" xlink:label="lab_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_BE52FB9D8C450642AAE93BAF5C2FE2A9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 9.00% Second-Priority Senior Secured Notes Due 2020 [Member] </link:label>
<link:label id="lab_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_BE52FB9D8C450642AAE93BAF5C2FE2A9_documentation_en-US" xlink:label="lab_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_BE52FB9D8C450642AAE93BAF5C2FE2A9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 9.00% Second-Priority Senior Secured Notes Due 2020 [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_A900SecondPrioritySeniorSecuredNotesDue2020Member" xlink:label="loc_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_BE52FB9D8C450642AAE93BAF5C2FE2A9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_BE52FB9D8C450642AAE93BAF5C2FE2A9" xlink:to="lab_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_BE52FB9D8C450642AAE93BAF5C2FE2A9" xlink:type="arc"/>
<link:label id="lab_us-gaap_GuaranteeObligationsByNatureAxis_31B39F8197E18ABCED113BAF5C2FE319_terseLabel_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsByNatureAxis_31B39F8197E18ABCED113BAF5C2FE319" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Guarantor Obligations, Nature [Axis] </link:label>
<link:label id="lab_us-gaap_GuaranteeObligationsByNatureAxis_31B39F8197E18ABCED113BAF5C2FE319_label_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsByNatureAxis_31B39F8197E18ABCED113BAF5C2FE319" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Guarantor Obligations, Nature [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GuaranteeObligationsByNatureAxis" xlink:label="loc_us-gaap_GuaranteeObligationsByNatureAxis_31B39F8197E18ABCED113BAF5C2FE319" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_31B39F8197E18ABCED113BAF5C2FE319" xlink:to="lab_us-gaap_GuaranteeObligationsByNatureAxis_31B39F8197E18ABCED113BAF5C2FE319" xlink:type="arc"/>
<link:label id="lab_us-gaap_GuaranteeObligationsNatureDomain_E82EE9D220ED0EB27B293BAF5C2F5DFC_terseLabel_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsNatureDomain_E82EE9D220ED0EB27B293BAF5C2F5DFC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Guarantor Obligations, Nature [Domain] </link:label>
<link:label id="lab_us-gaap_GuaranteeObligationsNatureDomain_E82EE9D220ED0EB27B293BAF5C2F5DFC_label_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsNatureDomain_E82EE9D220ED0EB27B293BAF5C2F5DFC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Guarantor Obligations, Nature [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_E82EE9D220ED0EB27B293BAF5C2F5DFC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_E82EE9D220ED0EB27B293BAF5C2F5DFC" xlink:to="lab_us-gaap_GuaranteeObligationsNatureDomain_E82EE9D220ED0EB27B293BAF5C2F5DFC" xlink:type="arc"/>
<link:label id="lab_us-gaap_GuaranteeObligationsLineItems_CDB48FD26B22E8C5A27D3BAF5C2FB184_terseLabel_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsLineItems_CDB48FD26B22E8C5A27D3BAF5C2FB184" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Guarantor Obligations [Line Items] </link:label>
<link:label id="lab_us-gaap_GuaranteeObligationsLineItems_CDB48FD26B22E8C5A27D3BAF5C2FB184_label_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsLineItems_CDB48FD26B22E8C5A27D3BAF5C2FB184" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Guarantor Obligations [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GuaranteeObligationsLineItems" xlink:label="loc_us-gaap_GuaranteeObligationsLineItems_CDB48FD26B22E8C5A27D3BAF5C2FB184" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuaranteeObligationsLineItems_CDB48FD26B22E8C5A27D3BAF5C2FB184" xlink:to="lab_us-gaap_GuaranteeObligationsLineItems_CDB48FD26B22E8C5A27D3BAF5C2FB184" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_FB73737E4A05EF29D3043BAF5C2FD804_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_FB73737E4A05EF29D3043BAF5C2FD804" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Interest Rate, Stated Percentage </link:label>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_FB73737E4A05EF29D3043BAF5C2FD804_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_FB73737E4A05EF29D3043BAF5C2FD804" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Interest Rate, Stated Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_FB73737E4A05EF29D3043BAF5C2FD804" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_FB73737E4A05EF29D3043BAF5C2FD804" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_FB73737E4A05EF29D3043BAF5C2FD804" xlink:type="arc"/>
<link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_F8CE243ADF3E6D5857260EBF9698EE53_label_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_F8CE243ADF3E6D5857260EBF9698EE53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Organization, Consolidation and Presentation of Financial Statements [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_F8CE243ADF3E6D5857260EBF9698EE53" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_F8CE243ADF3E6D5857260EBF9698EE53" xlink:to="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_F8CE243ADF3E6D5857260EBF9698EE53" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_711F9AA6171003786A5F0EBF9698DF40_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_711F9AA6171003786A5F0EBF9698DF40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Segment Reporting Information, by Segment [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_711F9AA6171003786A5F0EBF9698DF40_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_711F9AA6171003786A5F0EBF9698DF40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Segment Reporting Information, by Segment [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_711F9AA6171003786A5F0EBF9698DF40" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_711F9AA6171003786A5F0EBF9698DF40" xlink:to="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_711F9AA6171003786A5F0EBF9698DF40" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_7A23259F4CE1598D95A40EBF9698C0BD_terseLabel_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_7A23259F4CE1598D95A40EBF9698C0BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segments [Axis] </link:label>
<link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_7A23259F4CE1598D95A40EBF9698C0BD_label_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_7A23259F4CE1598D95A40EBF9698C0BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segments [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_7A23259F4CE1598D95A40EBF9698C0BD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_7A23259F4CE1598D95A40EBF9698C0BD" xlink:to="lab_us-gaap_StatementBusinessSegmentsAxis_7A23259F4CE1598D95A40EBF9698C0BD" xlink:type="arc"/>
<link:label id="lab_us-gaap_SegmentDomain_6AB0332ECFA6C16145910EBF9698BECA_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentDomain_6AB0332ECFA6C16145910EBF9698BECA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segments [Domain] </link:label>
<link:label id="lab_us-gaap_SegmentDomain_6AB0332ECFA6C16145910EBF9698BECA_label_en-US" xlink:label="lab_us-gaap_SegmentDomain_6AB0332ECFA6C16145910EBF9698BECA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segments [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_6AB0332ECFA6C16145910EBF9698BECA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentDomain_6AB0332ECFA6C16145910EBF9698BECA" xlink:to="lab_us-gaap_SegmentDomain_6AB0332ECFA6C16145910EBF9698BECA" xlink:type="arc"/>
<link:label id="lab_us-gaap_SegmentReportingInformationLineItems_042B58F4F0B256CA2AAE0EBF9698AFC1_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_042B58F4F0B256CA2AAE0EBF9698AFC1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segment Reporting Information [Line Items] </link:label>
<link:label id="lab_us-gaap_SegmentReportingInformationLineItems_042B58F4F0B256CA2AAE0EBF9698AFC1_label_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_042B58F4F0B256CA2AAE0EBF9698AFC1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment Reporting Information [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_042B58F4F0B256CA2AAE0EBF9698AFC1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_042B58F4F0B256CA2AAE0EBF9698AFC1" xlink:to="lab_us-gaap_SegmentReportingInformationLineItems_042B58F4F0B256CA2AAE0EBF9698AFC1" xlink:type="arc"/>
<link:label id="lab_us-gaap_NumberOfReportableSegments_9159DB1FC66003BB3BC90EBF9698833B_terseLabel_en-US" xlink:label="lab_us-gaap_NumberOfReportableSegments_9159DB1FC66003BB3BC90EBF9698833B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of Reportable Segments </link:label>
<link:label id="lab_us-gaap_NumberOfReportableSegments_9159DB1FC66003BB3BC90EBF9698833B_label_en-US" xlink:label="lab_us-gaap_NumberOfReportableSegments_9159DB1FC66003BB3BC90EBF9698833B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Number of Reportable Segments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:label="loc_us-gaap_NumberOfReportableSegments_9159DB1FC66003BB3BC90EBF9698833B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NumberOfReportableSegments_9159DB1FC66003BB3BC90EBF9698833B" xlink:to="lab_us-gaap_NumberOfReportableSegments_9159DB1FC66003BB3BC90EBF9698833B" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestructuringAndRelatedActivitiesAbstract_8F5E6ED63C239E1676330EBF9715C67F_label_en-US" xlink:label="lab_us-gaap_RestructuringAndRelatedActivitiesAbstract_8F5E6ED63C239E1676330EBF9715C67F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring and Related Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringAndRelatedActivitiesAbstract" xlink:label="loc_us-gaap_RestructuringAndRelatedActivitiesAbstract_8F5E6ED63C239E1676330EBF9715C67F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringAndRelatedActivitiesAbstract_8F5E6ED63C239E1676330EBF9715C67F" xlink:to="lab_us-gaap_RestructuringAndRelatedActivitiesAbstract_8F5E6ED63C239E1676330EBF9715C67F" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_B980E5ACFA3D0D0860B00EBF97157193_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_B980E5ACFA3D0D0860B00EBF97157193" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restructuring and Related Costs [Table Text Block] </link:label>
<link:label id="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_B980E5ACFA3D0D0860B00EBF97157193_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_B980E5ACFA3D0D0860B00EBF97157193" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring and Related Costs [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_B980E5ACFA3D0D0860B00EBF97157193" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_B980E5ACFA3D0D0860B00EBF97157193" xlink:to="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_B980E5ACFA3D0D0860B00EBF97157193" xlink:type="arc"/>
<link:label id="lab_msc_GuarantorNonGuarantorSubsidaryFinancialInformationAbstract_31CD1FAA2C9335889ADE0EBF96E73E00_label_en-US" xlink:label="lab_msc_GuarantorNonGuarantorSubsidaryFinancialInformationAbstract_31CD1FAA2C9335889ADE0EBF96E73E00" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Guarantor Non Guarantor Subsidary Financial Information [Abstract] </link:label>
<link:label id="lab_msc_GuarantorNonGuarantorSubsidaryFinancialInformationAbstract_31CD1FAA2C9335889ADE0EBF96E73E00_documentation_en-US" xlink:label="lab_msc_GuarantorNonGuarantorSubsidaryFinancialInformationAbstract_31CD1FAA2C9335889ADE0EBF96E73E00" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Guarantor Non Guarantor Subsidary Financial Information [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_GuarantorNonGuarantorSubsidaryFinancialInformationAbstract" xlink:label="loc_msc_GuarantorNonGuarantorSubsidaryFinancialInformationAbstract_31CD1FAA2C9335889ADE0EBF96E73E00" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_GuarantorNonGuarantorSubsidaryFinancialInformationAbstract_31CD1FAA2C9335889ADE0EBF96E73E00" xlink:to="lab_msc_GuarantorNonGuarantorSubsidaryFinancialInformationAbstract_31CD1FAA2C9335889ADE0EBF96E73E00" xlink:type="arc"/>
<link:label id="lab_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_72EF3058E19644AF22F50EBF96E77355_terseLabel_en-US" xlink:label="lab_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_72EF3058E19644AF22F50EBF96E77355" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Guarantees [Text Block] </link:label>
<link:label id="lab_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_72EF3058E19644AF22F50EBF96E77355_label_en-US" xlink:label="lab_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_72EF3058E19644AF22F50EBF96E77355" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Guarantor Non-Guarantor Subsidary Financial Data [Text Block] </link:label>
<link:label id="lab_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_72EF3058E19644AF22F50EBF96E77355_documentation_en-US" xlink:label="lab_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_72EF3058E19644AF22F50EBF96E77355" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Guarantor Non-Guarantor Subsidary Financial Data [Text Block] - Tabular disclosure of the condensed financial statements (balance sheet, income statement and statement of cash flows), normally using the registrant (parent) as the sole domain member. If condensed consolidating financial statements are being presented, other domain members (in addition to parent) such as guarantor subsidiaries, non-guarantor subsidiaries, and the consolidation eliminations, will be included in order that the respective monetary amounts for each of the domains will aggregate to the respective amounts on the consolidated financial statements. The line items are the various captions used to compile the condensed financial statements. Using extensions, most, if not all, of the elements representing condensed financial statement captions will be the same as those used for the consolidated financial statements captions. </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock" xlink:label="loc_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_72EF3058E19644AF22F50EBF96E77355" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_72EF3058E19644AF22F50EBF96E77355" xlink:to="lab_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_72EF3058E19644AF22F50EBF96E77355" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_EE90C1BCAA4F8B4060AE0EBF9698DAE1_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_EE90C1BCAA4F8B4060AE0EBF9698DAE1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commitments and Contingencies Disclosure [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_EE90C1BCAA4F8B4060AE0EBF9698DAE1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_EE90C1BCAA4F8B4060AE0EBF9698DAE1" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_EE90C1BCAA4F8B4060AE0EBF9698DAE1" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock_41B0C3ED256DA3FDC5660EBF9698CB99_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock_41B0C3ED256DA3FDC5660EBF9698CB99" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Environmental Loss Contingencies by Site [Table Text Block] </link:label>
<link:label id="lab_us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock_41B0C3ED256DA3FDC5660EBF9698CB99_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock_41B0C3ED256DA3FDC5660EBF9698CB99" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Environmental Loss Contingencies by Site [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock" xlink:label="loc_us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock_41B0C3ED256DA3FDC5660EBF9698CB99" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock_41B0C3ED256DA3FDC5660EBF9698CB99" xlink:to="lab_us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock_41B0C3ED256DA3FDC5660EBF9698CB99" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtDisclosureAbstract_CBF86E67804C49D84F680EBF966A6D66_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureAbstract_CBF86E67804C49D84F680EBF966A6D66" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Disclosure [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="loc_us-gaap_DebtDisclosureAbstract_CBF86E67804C49D84F680EBF966A6D66" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureAbstract_CBF86E67804C49D84F680EBF966A6D66" xlink:to="lab_us-gaap_DebtDisclosureAbstract_CBF86E67804C49D84F680EBF966A6D66" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtDisclosureTextBlock_04AA3CA1AD91A97D90910EBF966A5414_terseLabel_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_04AA3CA1AD91A97D90910EBF966A5414" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Disclosure [Text Block] </link:label>
<link:label id="lab_us-gaap_DebtDisclosureTextBlock_04AA3CA1AD91A97D90910EBF966A5414_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_04AA3CA1AD91A97D90910EBF966A5414" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="loc_us-gaap_DebtDisclosureTextBlock_04AA3CA1AD91A97D90910EBF966A5414" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureTextBlock_04AA3CA1AD91A97D90910EBF966A5414" xlink:to="lab_us-gaap_DebtDisclosureTextBlock_04AA3CA1AD91A97D90910EBF966A5414" xlink:type="arc"/>
<link:label id="lab_us-gaap_RelatedPartyTransactionsAbstract_6DEC1900ACA9BBB835FA3BAF5CB52B0E_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsAbstract_6DEC1900ACA9BBB835FA3BAF5CB52B0E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party Transactions [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionsAbstract" xlink:label="loc_us-gaap_RelatedPartyTransactionsAbstract_6DEC1900ACA9BBB835FA3BAF5CB52B0E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsAbstract_6DEC1900ACA9BBB835FA3BAF5CB52B0E" xlink:to="lab_us-gaap_RelatedPartyTransactionsAbstract_6DEC1900ACA9BBB835FA3BAF5CB52B0E" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_9D010B89E9B62EFC90D13BAF5CB51310_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_9D010B89E9B62EFC90D13BAF5CB51310" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Related Party Transactions, by Related Party [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_9D010B89E9B62EFC90D13BAF5CB51310_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_9D010B89E9B62EFC90D13BAF5CB51310" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Related Party Transactions, by Related Party [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_9D010B89E9B62EFC90D13BAF5CB51310" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_9D010B89E9B62EFC90D13BAF5CB51310" xlink:to="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_9D010B89E9B62EFC90D13BAF5CB51310" xlink:type="arc"/>
<link:label id="lab_us-gaap_RelatedPartyTransactionAxis_5D1535F54B22030918993BAF5CB54A07_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionAxis_5D1535F54B22030918993BAF5CB54A07" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party Transaction [Axis] </link:label>
<link:label id="lab_us-gaap_RelatedPartyTransactionAxis_5D1535F54B22030918993BAF5CB54A07_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionAxis_5D1535F54B22030918993BAF5CB54A07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party Transaction [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_5D1535F54B22030918993BAF5CB54A07" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_5D1535F54B22030918993BAF5CB54A07" xlink:to="lab_us-gaap_RelatedPartyTransactionAxis_5D1535F54B22030918993BAF5CB54A07" xlink:type="arc"/>
<link:label id="lab_us-gaap_RelatedPartyTransactionDomain_E3F136EC5CF23AA945693BAF5CB521D9_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionDomain_E3F136EC5CF23AA945693BAF5CB521D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party Transaction [Domain] </link:label>
<link:label id="lab_us-gaap_RelatedPartyTransactionDomain_E3F136EC5CF23AA945693BAF5CB521D9_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionDomain_E3F136EC5CF23AA945693BAF5CB521D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party Transaction [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionDomain" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_E3F136EC5CF23AA945693BAF5CB521D9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_E3F136EC5CF23AA945693BAF5CB521D9" xlink:to="lab_us-gaap_RelatedPartyTransactionDomain_E3F136EC5CF23AA945693BAF5CB521D9" xlink:type="arc"/>
<link:label id="lab_msc_OtherjointventuresunconsolidatedMember_1270FECFB41581D3F61E3BAF5CB635E2_terseLabel_en-US" xlink:label="lab_msc_OtherjointventuresunconsolidatedMember_1270FECFB41581D3F61E3BAF5CB635E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other joint ventures unconsolidated [Member] </link:label>
<link:label id="lab_msc_OtherjointventuresunconsolidatedMember_1270FECFB41581D3F61E3BAF5CB635E2_label_en-US" xlink:label="lab_msc_OtherjointventuresunconsolidatedMember_1270FECFB41581D3F61E3BAF5CB635E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other joint ventures unconsolidated [Member] </link:label>
<link:label id="lab_msc_OtherjointventuresunconsolidatedMember_1270FECFB41581D3F61E3BAF5CB635E2_documentation_en-US" xlink:label="lab_msc_OtherjointventuresunconsolidatedMember_1270FECFB41581D3F61E3BAF5CB635E2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Other joint ventures unconsolidated [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_OtherjointventuresunconsolidatedMember" xlink:label="loc_msc_OtherjointventuresunconsolidatedMember_1270FECFB41581D3F61E3BAF5CB635E2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_OtherjointventuresunconsolidatedMember_1270FECFB41581D3F61E3BAF5CB635E2" xlink:to="lab_msc_OtherjointventuresunconsolidatedMember_1270FECFB41581D3F61E3BAF5CB635E2" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementEquityComponentsAxis_39F3BAFF842AA80FBB8C3BAF5CB6A930_terseLabel_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_39F3BAFF842AA80FBB8C3BAF5CB6A930" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity Components [Axis] </link:label>
<link:label id="lab_us-gaap_StatementEquityComponentsAxis_39F3BAFF842AA80FBB8C3BAF5CB6A930_label_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_39F3BAFF842AA80FBB8C3BAF5CB6A930" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Components [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_39F3BAFF842AA80FBB8C3BAF5CB6A930" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_39F3BAFF842AA80FBB8C3BAF5CB6A930" xlink:to="lab_us-gaap_StatementEquityComponentsAxis_39F3BAFF842AA80FBB8C3BAF5CB6A930" xlink:type="arc"/>
<link:label id="lab_us-gaap_EquityComponentDomain_4455F8861C782A244DFE3BAF5CB65779_terseLabel_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_4455F8861C782A244DFE3BAF5CB65779" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity Component [Domain] </link:label>
<link:label id="lab_us-gaap_EquityComponentDomain_4455F8861C782A244DFE3BAF5CB65779_label_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_4455F8861C782A244DFE3BAF5CB65779" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Component [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_4455F8861C782A244DFE3BAF5CB65779" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityComponentDomain_4455F8861C782A244DFE3BAF5CB65779" xlink:to="lab_us-gaap_EquityComponentDomain_4455F8861C782A244DFE3BAF5CB65779" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_1D8E9BC77EA5978D96933BAF5CB6BD28_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_1D8E9BC77EA5978D96933BAF5CB6BD28" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Additional Paid-in Capital [Member] </link:label>
<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_1D8E9BC77EA5978D96933BAF5CB6BD28_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_1D8E9BC77EA5978D96933BAF5CB6BD28" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Additional Paid-in Capital [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_1D8E9BC77EA5978D96933BAF5CB6BD28" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalMember_1D8E9BC77EA5978D96933BAF5CB6BD28" xlink:to="lab_us-gaap_AdditionalPaidInCapitalMember_1D8E9BC77EA5978D96933BAF5CB6BD28" xlink:type="arc"/>
<link:label id="lab_us-gaap_RangeAxis_7B2DF293A80E74E511BD3BAF5CB6903D_terseLabel_en-US" xlink:label="lab_us-gaap_RangeAxis_7B2DF293A80E74E511BD3BAF5CB6903D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Range [Axis] </link:label>
<link:label id="lab_us-gaap_RangeAxis_7B2DF293A80E74E511BD3BAF5CB6903D_label_en-US" xlink:label="lab_us-gaap_RangeAxis_7B2DF293A80E74E511BD3BAF5CB6903D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Range [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_7B2DF293A80E74E511BD3BAF5CB6903D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RangeAxis_7B2DF293A80E74E511BD3BAF5CB6903D" xlink:to="lab_us-gaap_RangeAxis_7B2DF293A80E74E511BD3BAF5CB6903D" xlink:type="arc"/>
<link:label id="lab_us-gaap_RangeMember_F1B670CF26E6F2449C943BAF5CB630C4_terseLabel_en-US" xlink:label="lab_us-gaap_RangeMember_F1B670CF26E6F2449C943BAF5CB630C4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Range [Domain] </link:label>
<link:label id="lab_us-gaap_RangeMember_F1B670CF26E6F2449C943BAF5CB630C4_label_en-US" xlink:label="lab_us-gaap_RangeMember_F1B670CF26E6F2449C943BAF5CB630C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Range [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_F1B670CF26E6F2449C943BAF5CB630C4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RangeMember_F1B670CF26E6F2449C943BAF5CB630C4" xlink:to="lab_us-gaap_RangeMember_F1B670CF26E6F2449C943BAF5CB630C4" xlink:type="arc"/>
<link:label id="lab_us-gaap_MaximumMember_C3BD448EC98FBB6C23D73BAF5CB689D8_terseLabel_en-US" xlink:label="lab_us-gaap_MaximumMember_C3BD448EC98FBB6C23D73BAF5CB689D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Maximum [Member] </link:label>
<link:label id="lab_us-gaap_MaximumMember_C3BD448EC98FBB6C23D73BAF5CB689D8_label_en-US" xlink:label="lab_us-gaap_MaximumMember_C3BD448EC98FBB6C23D73BAF5CB689D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Maximum [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_C3BD448EC98FBB6C23D73BAF5CB689D8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MaximumMember_C3BD448EC98FBB6C23D73BAF5CB689D8" xlink:to="lab_us-gaap_MaximumMember_C3BD448EC98FBB6C23D73BAF5CB689D8" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConsolidatedEntitiesAxis_A2DC72FB1DA3BA1B1D013BAF5CB69703_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidatedEntitiesAxis_A2DC72FB1DA3BA1B1D013BAF5CB69703" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Consolidated Entities [Axis] </link:label>
<link:label id="lab_us-gaap_ConsolidatedEntitiesAxis_A2DC72FB1DA3BA1B1D013BAF5CB69703_label_en-US" xlink:label="lab_us-gaap_ConsolidatedEntitiesAxis_A2DC72FB1DA3BA1B1D013BAF5CB69703" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidated Entities [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesAxis" xlink:label="loc_us-gaap_ConsolidatedEntitiesAxis_A2DC72FB1DA3BA1B1D013BAF5CB69703" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidatedEntitiesAxis_A2DC72FB1DA3BA1B1D013BAF5CB69703" xlink:to="lab_us-gaap_ConsolidatedEntitiesAxis_A2DC72FB1DA3BA1B1D013BAF5CB69703" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConsolidatedEntitiesDomain_ACF868024432D4C2909D3BAF5CB6185C_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidatedEntitiesDomain_ACF868024432D4C2909D3BAF5CB6185C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Consolidated Entities [Domain] </link:label>
<link:label id="lab_us-gaap_ConsolidatedEntitiesDomain_ACF868024432D4C2909D3BAF5CB6185C_label_en-US" xlink:label="lab_us-gaap_ConsolidatedEntitiesDomain_ACF868024432D4C2909D3BAF5CB6185C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidated Entities [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidatedEntitiesDomain" xlink:label="loc_us-gaap_ConsolidatedEntitiesDomain_ACF868024432D4C2909D3BAF5CB6185C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidatedEntitiesDomain_ACF868024432D4C2909D3BAF5CB6185C" xlink:to="lab_us-gaap_ConsolidatedEntitiesDomain_ACF868024432D4C2909D3BAF5CB6185C" xlink:type="arc"/>
<link:label id="lab_us-gaap_ParentCompanyMember_449E73B0B2E856EC4D7B3BAF5CB66E41_terseLabel_en-US" xlink:label="lab_us-gaap_ParentCompanyMember_449E73B0B2E856EC4D7B3BAF5CB66E41" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Hexion Inc. [Member] </link:label>
<link:label id="lab_us-gaap_ParentCompanyMember_449E73B0B2E856EC4D7B3BAF5CB66E41_label_en-US" xlink:label="lab_us-gaap_ParentCompanyMember_449E73B0B2E856EC4D7B3BAF5CB66E41" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Parent Company [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ParentCompanyMember" xlink:label="loc_us-gaap_ParentCompanyMember_449E73B0B2E856EC4D7B3BAF5CB66E41" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ParentCompanyMember_449E73B0B2E856EC4D7B3BAF5CB66E41" xlink:to="lab_us-gaap_ParentCompanyMember_449E73B0B2E856EC4D7B3BAF5CB66E41" xlink:type="arc"/>
<link:label id="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_D021C753DE026AE970EF3BAF5CB713A4_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_D021C753DE026AE970EF3BAF5CB713A4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party [Axis] </link:label>
<link:label id="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_D021C753DE026AE970EF3BAF5CB713A4_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_D021C753DE026AE970EF3BAF5CB713A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_D021C753DE026AE970EF3BAF5CB713A4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_D021C753DE026AE970EF3BAF5CB713A4" xlink:to="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_D021C753DE026AE970EF3BAF5CB713A4" xlink:type="arc"/>
<link:label id="lab_us-gaap_RelatedPartyDomain_964D80E5847B108C26463BAF5CB78B8B_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain_964D80E5847B108C26463BAF5CB78B8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party [Domain] </link:label>
<link:label id="lab_us-gaap_RelatedPartyDomain_964D80E5847B108C26463BAF5CB78B8B_label_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain_964D80E5847B108C26463BAF5CB78B8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_964D80E5847B108C26463BAF5CB78B8B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyDomain_964D80E5847B108C26463BAF5CB78B8B" xlink:to="lab_us-gaap_RelatedPartyDomain_964D80E5847B108C26463BAF5CB78B8B" xlink:type="arc"/>
<link:label id="lab_msc_ApolloAffiliatesAndOtherRelatedPartiesMember_31AF39E1526F119060823BAF5CB73C60_terseLabel_en-US" xlink:label="lab_msc_ApolloAffiliatesAndOtherRelatedPartiesMember_31AF39E1526F119060823BAF5CB73C60" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Apollo Affiliates and Other Related Parties [Member] </link:label>
<link:label id="lab_msc_ApolloAffiliatesAndOtherRelatedPartiesMember_31AF39E1526F119060823BAF5CB73C60_label_en-US" xlink:label="lab_msc_ApolloAffiliatesAndOtherRelatedPartiesMember_31AF39E1526F119060823BAF5CB73C60" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Apollo Affiliates and Other Related Parties [Member] </link:label>
<link:label id="lab_msc_ApolloAffiliatesAndOtherRelatedPartiesMember_31AF39E1526F119060823BAF5CB73C60_documentation_en-US" xlink:label="lab_msc_ApolloAffiliatesAndOtherRelatedPartiesMember_31AF39E1526F119060823BAF5CB73C60" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Apollo Affiliates and Other Related Parties [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_ApolloAffiliatesAndOtherRelatedPartiesMember" xlink:label="loc_msc_ApolloAffiliatesAndOtherRelatedPartiesMember_31AF39E1526F119060823BAF5CB73C60" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_ApolloAffiliatesAndOtherRelatedPartiesMember_31AF39E1526F119060823BAF5CB73C60" xlink:to="lab_msc_ApolloAffiliatesAndOtherRelatedPartiesMember_31AF39E1526F119060823BAF5CB73C60" xlink:type="arc"/>
<link:label id="lab_us-gaap_PrincipalOwnerMember_2176766932A0C7E3A7263BAF5CB7F22A_terseLabel_en-US" xlink:label="lab_us-gaap_PrincipalOwnerMember_2176766932A0C7E3A7263BAF5CB7F22A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Apollo [Member] </link:label>
<link:label id="lab_us-gaap_PrincipalOwnerMember_2176766932A0C7E3A7263BAF5CB7F22A_label_en-US" xlink:label="lab_us-gaap_PrincipalOwnerMember_2176766932A0C7E3A7263BAF5CB7F22A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Principal Owner [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PrincipalOwnerMember" xlink:label="loc_us-gaap_PrincipalOwnerMember_2176766932A0C7E3A7263BAF5CB7F22A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PrincipalOwnerMember_2176766932A0C7E3A7263BAF5CB7F22A" xlink:to="lab_us-gaap_PrincipalOwnerMember_2176766932A0C7E3A7263BAF5CB7F22A" xlink:type="arc"/>
<link:label id="lab_us-gaap_SubsidiaryOfCommonParentMember_D34FDC35467C9193A2C93BAF5CB7E7E8_terseLabel_en-US" xlink:label="lab_us-gaap_SubsidiaryOfCommonParentMember_D34FDC35467C9193A2C93BAF5CB7E7E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Subsidiary of Common Parent [Member] </link:label>
<link:label id="lab_us-gaap_SubsidiaryOfCommonParentMember_D34FDC35467C9193A2C93BAF5CB7E7E8_label_en-US" xlink:label="lab_us-gaap_SubsidiaryOfCommonParentMember_D34FDC35467C9193A2C93BAF5CB7E7E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subsidiary of Common Parent [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsidiaryOfCommonParentMember" xlink:label="loc_us-gaap_SubsidiaryOfCommonParentMember_D34FDC35467C9193A2C93BAF5CB7E7E8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsidiaryOfCommonParentMember_D34FDC35467C9193A2C93BAF5CB7E7E8" xlink:to="lab_us-gaap_SubsidiaryOfCommonParentMember_D34FDC35467C9193A2C93BAF5CB7E7E8" xlink:type="arc"/>
<link:label id="lab_msc_MomentivePerformanceMaterialsIncMember_B57FC0808AB13D25EEBB3BAF5CB7CE0B_terseLabel_en-US" xlink:label="lab_msc_MomentivePerformanceMaterialsIncMember_B57FC0808AB13D25EEBB3BAF5CB7CE0B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Momentive Performance Materials Inc. [Member] </link:label>
<link:label id="lab_msc_MomentivePerformanceMaterialsIncMember_B57FC0808AB13D25EEBB3BAF5CB7CE0B_label_en-US" xlink:label="lab_msc_MomentivePerformanceMaterialsIncMember_B57FC0808AB13D25EEBB3BAF5CB7CE0B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Momentive Performance Materials Inc. [Member] </link:label>
<link:label id="lab_msc_MomentivePerformanceMaterialsIncMember_B57FC0808AB13D25EEBB3BAF5CB7CE0B_documentation_en-US" xlink:label="lab_msc_MomentivePerformanceMaterialsIncMember_B57FC0808AB13D25EEBB3BAF5CB7CE0B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Momentive Performance Materials Inc. [Member] [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_MomentivePerformanceMaterialsIncMember" xlink:label="loc_msc_MomentivePerformanceMaterialsIncMember_B57FC0808AB13D25EEBB3BAF5CB7CE0B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_MomentivePerformanceMaterialsIncMember_B57FC0808AB13D25EEBB3BAF5CB7CE0B" xlink:to="lab_msc_MomentivePerformanceMaterialsIncMember_B57FC0808AB13D25EEBB3BAF5CB7CE0B" xlink:type="arc"/>
<link:label id="lab_us-gaap_CoVenturerMember_2B1056CA7CD84F47B0C73BAF5CB76D4B_terseLabel_en-US" xlink:label="lab_us-gaap_CoVenturerMember_2B1056CA7CD84F47B0C73BAF5CB76D4B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Russian Joint Venture [Member] </link:label>
<link:label id="lab_us-gaap_CoVenturerMember_2B1056CA7CD84F47B0C73BAF5CB76D4B_label_en-US" xlink:label="lab_us-gaap_CoVenturerMember_2B1056CA7CD84F47B0C73BAF5CB76D4B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Co-venturer [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CoVenturerMember" xlink:label="loc_us-gaap_CoVenturerMember_2B1056CA7CD84F47B0C73BAF5CB76D4B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CoVenturerMember_2B1056CA7CD84F47B0C73BAF5CB76D4B" xlink:to="lab_us-gaap_CoVenturerMember_2B1056CA7CD84F47B0C73BAF5CB76D4B" xlink:type="arc"/>
<link:label id="lab_us-gaap_RelatedPartyTransactionLineItems_8A55474A629EDD4F28D03BAF5CB71EE4_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionLineItems_8A55474A629EDD4F28D03BAF5CB71EE4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party Transaction [Line Items] </link:label>
<link:label id="lab_us-gaap_RelatedPartyTransactionLineItems_8A55474A629EDD4F28D03BAF5CB71EE4_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionLineItems_8A55474A629EDD4F28D03BAF5CB71EE4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party Transaction [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_8A55474A629EDD4F28D03BAF5CB71EE4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_8A55474A629EDD4F28D03BAF5CB71EE4" xlink:to="lab_us-gaap_RelatedPartyTransactionLineItems_8A55474A629EDD4F28D03BAF5CB71EE4" xlink:type="arc"/>
<link:label id="lab_msc_AnnualManagementConsultingFee_3C71A6B1EB875C1E18773BAF5CB778BA_terseLabel_en-US" xlink:label="lab_msc_AnnualManagementConsultingFee_3C71A6B1EB875C1E18773BAF5CB778BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Annual management consulting fee </link:label>
<link:label id="lab_msc_AnnualManagementConsultingFee_3C71A6B1EB875C1E18773BAF5CB778BA_label_en-US" xlink:label="lab_msc_AnnualManagementConsultingFee_3C71A6B1EB875C1E18773BAF5CB778BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Annual management consulting fee </link:label>
<link:label id="lab_msc_AnnualManagementConsultingFee_3C71A6B1EB875C1E18773BAF5CB778BA_documentation_en-US" xlink:label="lab_msc_AnnualManagementConsultingFee_3C71A6B1EB875C1E18773BAF5CB778BA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Annual management consulting fee </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_AnnualManagementConsultingFee" xlink:label="loc_msc_AnnualManagementConsultingFee_3C71A6B1EB875C1E18773BAF5CB778BA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AnnualManagementConsultingFee_3C71A6B1EB875C1E18773BAF5CB778BA" xlink:to="lab_msc_AnnualManagementConsultingFee_3C71A6B1EB875C1E18773BAF5CB778BA" xlink:type="arc"/>
<link:label id="lab_msc_AnnualManagementConsultingFeePercentage_6A6D10FBA1096F739F1F3BAF5CB7D483_terseLabel_en-US" xlink:label="lab_msc_AnnualManagementConsultingFeePercentage_6A6D10FBA1096F739F1F3BAF5CB7D483" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Annual management consulting fee percentage </link:label>
<link:label id="lab_msc_AnnualManagementConsultingFeePercentage_6A6D10FBA1096F739F1F3BAF5CB7D483_label_en-US" xlink:label="lab_msc_AnnualManagementConsultingFeePercentage_6A6D10FBA1096F739F1F3BAF5CB7D483" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Annual management consulting fee percentage </link:label>
<link:label id="lab_msc_AnnualManagementConsultingFeePercentage_6A6D10FBA1096F739F1F3BAF5CB7D483_documentation_en-US" xlink:label="lab_msc_AnnualManagementConsultingFeePercentage_6A6D10FBA1096F739F1F3BAF5CB7D483" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Annual management consulting fee percentage </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_AnnualManagementConsultingFeePercentage" xlink:label="loc_msc_AnnualManagementConsultingFeePercentage_6A6D10FBA1096F739F1F3BAF5CB7D483" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AnnualManagementConsultingFeePercentage_6A6D10FBA1096F739F1F3BAF5CB7D483" xlink:to="lab_msc_AnnualManagementConsultingFeePercentage_6A6D10FBA1096F739F1F3BAF5CB7D483" xlink:type="arc"/>
<link:label id="lab_us-gaap_RelatedPartyCosts_E08B230DB9E3AC5AAA6B3BAF5CB71B52_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyCosts_E08B230DB9E3AC5AAA6B3BAF5CB71B52" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party Costs </link:label>
<link:label id="lab_us-gaap_RelatedPartyCosts_E08B230DB9E3AC5AAA6B3BAF5CB71B52_label_en-US" xlink:label="lab_us-gaap_RelatedPartyCosts_E08B230DB9E3AC5AAA6B3BAF5CB71B52" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party Costs </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyCosts" xlink:label="loc_us-gaap_RelatedPartyCosts_E08B230DB9E3AC5AAA6B3BAF5CB71B52" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyCosts_E08B230DB9E3AC5AAA6B3BAF5CB71B52" xlink:to="lab_us-gaap_RelatedPartyCosts_E08B230DB9E3AC5AAA6B3BAF5CB71B52" xlink:type="arc"/>
<link:label id="lab_msc_SharedServicesCostsIncurredbyHexion_81C5794BFBE01C5812953BAF5CB72663_terseLabel_en-US" xlink:label="lab_msc_SharedServicesCostsIncurredbyHexion_81C5794BFBE01C5812953BAF5CB72663" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Shared Services Costs Incurred by Hexion </link:label>
<link:label id="lab_msc_SharedServicesCostsIncurredbyHexion_81C5794BFBE01C5812953BAF5CB72663_label_en-US" xlink:label="lab_msc_SharedServicesCostsIncurredbyHexion_81C5794BFBE01C5812953BAF5CB72663" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Shared Services Costs Incurred by Hexion </link:label>
<link:label id="lab_msc_SharedServicesCostsIncurredbyHexion_81C5794BFBE01C5812953BAF5CB72663_documentation_en-US" xlink:label="lab_msc_SharedServicesCostsIncurredbyHexion_81C5794BFBE01C5812953BAF5CB72663" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Shared Services Costs Incurred by Hexion </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_SharedServicesCostsIncurredbyHexion" xlink:label="loc_msc_SharedServicesCostsIncurredbyHexion_81C5794BFBE01C5812953BAF5CB72663" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SharedServicesCostsIncurredbyHexion_81C5794BFBE01C5812953BAF5CB72663" xlink:to="lab_msc_SharedServicesCostsIncurredbyHexion_81C5794BFBE01C5812953BAF5CB72663" xlink:type="arc"/>
<link:label id="lab_msc_SharedServicesCostsIncurredByMpm_D24F95A3D275460E2D603BAF5CB72CB1_terseLabel_en-US" xlink:label="lab_msc_SharedServicesCostsIncurredByMpm_D24F95A3D275460E2D603BAF5CB72CB1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Shared Services Costs Incurred by MPM </link:label>
<link:label id="lab_msc_SharedServicesCostsIncurredByMpm_D24F95A3D275460E2D603BAF5CB72CB1_label_en-US" xlink:label="lab_msc_SharedServicesCostsIncurredByMpm_D24F95A3D275460E2D603BAF5CB72CB1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Shared Services Costs Incurred by MPM </link:label>
<link:label id="lab_msc_SharedServicesCostsIncurredByMpm_D24F95A3D275460E2D603BAF5CB72CB1_documentation_en-US" xlink:label="lab_msc_SharedServicesCostsIncurredByMpm_D24F95A3D275460E2D603BAF5CB72CB1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Shared Services Costs Incurred by MPM </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_SharedServicesCostsIncurredByMpm" xlink:label="loc_msc_SharedServicesCostsIncurredByMpm_D24F95A3D275460E2D603BAF5CB72CB1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SharedServicesCostsIncurredByMpm_D24F95A3D275460E2D603BAF5CB72CB1" xlink:to="lab_msc_SharedServicesCostsIncurredByMpm_D24F95A3D275460E2D603BAF5CB72CB1" xlink:type="arc"/>
<link:label id="lab_msc_SharedServicesNetBillingsHexiontoMPM_36907CE71813605F0DAB3BAF5CB700D3_terseLabel_en-US" xlink:label="lab_msc_SharedServicesNetBillingsHexiontoMPM_36907CE71813605F0DAB3BAF5CB700D3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Shared Services Net Billings - Hexion to MPM </link:label>
<link:label id="lab_msc_SharedServicesNetBillingsHexiontoMPM_36907CE71813605F0DAB3BAF5CB700D3_label_en-US" xlink:label="lab_msc_SharedServicesNetBillingsHexiontoMPM_36907CE71813605F0DAB3BAF5CB700D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Shared Services Net Billings - Hexion to MPM </link:label>
<link:label id="lab_msc_SharedServicesNetBillingsHexiontoMPM_36907CE71813605F0DAB3BAF5CB700D3_documentation_en-US" xlink:label="lab_msc_SharedServicesNetBillingsHexiontoMPM_36907CE71813605F0DAB3BAF5CB700D3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Shared Services Net Billings - Hexion to MPM </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_SharedServicesNetBillingsHexiontoMPM" xlink:label="loc_msc_SharedServicesNetBillingsHexiontoMPM_36907CE71813605F0DAB3BAF5CB700D3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SharedServicesNetBillingsHexiontoMPM_36907CE71813605F0DAB3BAF5CB700D3" xlink:to="lab_msc_SharedServicesNetBillingsHexiontoMPM_36907CE71813605F0DAB3BAF5CB700D3" xlink:type="arc"/>
<link:label id="lab_msc_AccountsReceivablesharedservicescosts_10075291A5FCD56F60473BAF5CB7DDE1_terseLabel_en-US" xlink:label="lab_msc_AccountsReceivablesharedservicescosts_10075291A5FCD56F60473BAF5CB7DDE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts Receivable shared services costs </link:label>
<link:label id="lab_msc_AccountsReceivablesharedservicescosts_10075291A5FCD56F60473BAF5CB7DDE1_label_en-US" xlink:label="lab_msc_AccountsReceivablesharedservicescosts_10075291A5FCD56F60473BAF5CB7DDE1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Receivable shared services costs </link:label>
<link:label id="lab_msc_AccountsReceivablesharedservicescosts_10075291A5FCD56F60473BAF5CB7DDE1_documentation_en-US" xlink:label="lab_msc_AccountsReceivablesharedservicescosts_10075291A5FCD56F60473BAF5CB7DDE1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Accounts Receivable shared services costs </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_AccountsReceivablesharedservicescosts" xlink:label="loc_msc_AccountsReceivablesharedservicescosts_10075291A5FCD56F60473BAF5CB7DDE1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AccountsReceivablesharedservicescosts_10075291A5FCD56F60473BAF5CB7DDE1" xlink:to="lab_msc_AccountsReceivablesharedservicescosts_10075291A5FCD56F60473BAF5CB7DDE1" xlink:type="arc"/>
<link:label id="lab_msc_AccountsPayableforSharedServices_84E76A4E9D8C332D383F3BAF5CB75172_terseLabel_en-US" xlink:label="lab_msc_AccountsPayableforSharedServices_84E76A4E9D8C332D383F3BAF5CB75172" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts Payable for Shared Services </link:label>
<link:label id="lab_msc_AccountsPayableforSharedServices_84E76A4E9D8C332D383F3BAF5CB75172_label_en-US" xlink:label="lab_msc_AccountsPayableforSharedServices_84E76A4E9D8C332D383F3BAF5CB75172" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Payable for Shared Services </link:label>
<link:label id="lab_msc_AccountsPayableforSharedServices_84E76A4E9D8C332D383F3BAF5CB75172_documentation_en-US" xlink:label="lab_msc_AccountsPayableforSharedServices_84E76A4E9D8C332D383F3BAF5CB75172" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Accounts Payable for Shared Services </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_AccountsPayableforSharedServices" xlink:label="loc_msc_AccountsPayableforSharedServices_84E76A4E9D8C332D383F3BAF5CB75172" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AccountsPayableforSharedServices_84E76A4E9D8C332D383F3BAF5CB75172" xlink:to="lab_msc_AccountsPayableforSharedServices_84E76A4E9D8C332D383F3BAF5CB75172" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevenueFromRelatedParties_A082A371E7FAFE17C8563BAF5CB70967_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromRelatedParties_A082A371E7FAFE17C8563BAF5CB70967" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue from Related Parties </link:label>
<link:label id="lab_us-gaap_RevenueFromRelatedParties_A082A371E7FAFE17C8563BAF5CB70967_label_en-US" xlink:label="lab_us-gaap_RevenueFromRelatedParties_A082A371E7FAFE17C8563BAF5CB70967" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue from Related Parties </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RevenueFromRelatedParties" xlink:label="loc_us-gaap_RevenueFromRelatedParties_A082A371E7FAFE17C8563BAF5CB70967" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromRelatedParties_A082A371E7FAFE17C8563BAF5CB70967" xlink:to="lab_us-gaap_RevenueFromRelatedParties_A082A371E7FAFE17C8563BAF5CB70967" xlink:type="arc"/>
<link:label id="lab_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_6F3EAFF144277F4792273BAF5CB77EAC_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_6F3EAFF144277F4792273BAF5CB77EAC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party Transaction, Purchases from Related Party </link:label>
<link:label id="lab_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_6F3EAFF144277F4792273BAF5CB77EAC_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_6F3EAFF144277F4792273BAF5CB77EAC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party Transaction, Purchases from Related Party </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty" xlink:label="loc_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_6F3EAFF144277F4792273BAF5CB77EAC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_6F3EAFF144277F4792273BAF5CB77EAC" xlink:to="lab_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_6F3EAFF144277F4792273BAF5CB77EAC" xlink:type="arc"/>
<link:label id="lab_msc_Revenuesfromdistributionagreement_14650A225DAB566BD4153BAF5CB7BFC1_terseLabel_en-US" xlink:label="lab_msc_Revenuesfromdistributionagreement_14650A225DAB566BD4153BAF5CB7BFC1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenues from distribution agreement </link:label>
<link:label id="lab_msc_Revenuesfromdistributionagreement_14650A225DAB566BD4153BAF5CB7BFC1_label_en-US" xlink:label="lab_msc_Revenuesfromdistributionagreement_14650A225DAB566BD4153BAF5CB7BFC1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenues from distribution agreement </link:label>
<link:label id="lab_msc_Revenuesfromdistributionagreement_14650A225DAB566BD4153BAF5CB7BFC1_documentation_en-US" xlink:label="lab_msc_Revenuesfromdistributionagreement_14650A225DAB566BD4153BAF5CB7BFC1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Revenues from distribution agreement </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_Revenuesfromdistributionagreement" xlink:label="loc_msc_Revenuesfromdistributionagreement_14650A225DAB566BD4153BAF5CB7BFC1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Revenuesfromdistributionagreement_14650A225DAB566BD4153BAF5CB7BFC1" xlink:to="lab_msc_Revenuesfromdistributionagreement_14650A225DAB566BD4153BAF5CB7BFC1" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountsReceivableRelatedParties_5A2437C442AD43585D833BAF5CB71741_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableRelatedParties_5A2437C442AD43585D833BAF5CB71741" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts Receivable, Related Parties </link:label>
<link:label id="lab_us-gaap_AccountsReceivableRelatedParties_5A2437C442AD43585D833BAF5CB71741_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableRelatedParties_5A2437C442AD43585D833BAF5CB71741" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Receivable, Related Parties </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsReceivableRelatedParties" xlink:label="loc_us-gaap_AccountsReceivableRelatedParties_5A2437C442AD43585D833BAF5CB71741" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableRelatedParties_5A2437C442AD43585D833BAF5CB71741" xlink:to="lab_us-gaap_AccountsReceivableRelatedParties_5A2437C442AD43585D833BAF5CB71741" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_48193A672E99155661053BAF5CB7C327_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_48193A672E99155661053BAF5CB7C327" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts Payable, Related Parties </link:label>
<link:label id="lab_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_48193A672E99155661053BAF5CB7C327_label_en-US" xlink:label="lab_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_48193A672E99155661053BAF5CB7C327" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Payable, Related Parties </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent" xlink:label="loc_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_48193A672E99155661053BAF5CB7C327" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_48193A672E99155661053BAF5CB7C327" xlink:to="lab_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_48193A672E99155661053BAF5CB7C327" xlink:type="arc"/>
<link:label id="lab_msc_PurchasesFromRelatedParties_AB7EF1CFF0FF8D9CE4CC3BAF5CB75BF0_terseLabel_en-US" xlink:label="lab_msc_PurchasesFromRelatedParties_AB7EF1CFF0FF8D9CE4CC3BAF5CB75BF0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Purchases From Related Parties </link:label>
<link:label id="lab_msc_PurchasesFromRelatedParties_AB7EF1CFF0FF8D9CE4CC3BAF5CB75BF0_label_en-US" xlink:label="lab_msc_PurchasesFromRelatedParties_AB7EF1CFF0FF8D9CE4CC3BAF5CB75BF0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Purchases From Related Parties </link:label>
<link:label id="lab_msc_PurchasesFromRelatedParties_AB7EF1CFF0FF8D9CE4CC3BAF5CB75BF0_documentation_en-US" xlink:label="lab_msc_PurchasesFromRelatedParties_AB7EF1CFF0FF8D9CE4CC3BAF5CB75BF0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Purchases From Related Parties </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_PurchasesFromRelatedParties" xlink:label="loc_msc_PurchasesFromRelatedParties_AB7EF1CFF0FF8D9CE4CC3BAF5CB75BF0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_PurchasesFromRelatedParties_AB7EF1CFF0FF8D9CE4CC3BAF5CB75BF0" xlink:to="lab_msc_PurchasesFromRelatedParties_AB7EF1CFF0FF8D9CE4CC3BAF5CB75BF0" xlink:type="arc"/>
<link:label id="lab_msc_PurchasesfromJV_AA2788BC215C78ACCF853BAF5CB7113E_terseLabel_en-US" xlink:label="lab_msc_PurchasesfromJV_AA2788BC215C78ACCF853BAF5CB7113E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Purchases from JV </link:label>
<link:label id="lab_msc_PurchasesfromJV_AA2788BC215C78ACCF853BAF5CB7113E_label_en-US" xlink:label="lab_msc_PurchasesfromJV_AA2788BC215C78ACCF853BAF5CB7113E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Purchases from JV </link:label>
<link:label id="lab_msc_PurchasesfromJV_AA2788BC215C78ACCF853BAF5CB7113E_documentation_en-US" xlink:label="lab_msc_PurchasesfromJV_AA2788BC215C78ACCF853BAF5CB7113E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Purchases from JV </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_PurchasesfromJV" xlink:label="loc_msc_PurchasesfromJV_AA2788BC215C78ACCF853BAF5CB7113E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_PurchasesfromJV_AA2788BC215C78ACCF853BAF5CB7113E" xlink:to="lab_msc_PurchasesfromJV_AA2788BC215C78ACCF853BAF5CB7113E" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountsReceivableRelatedPartiesCurrent_95531A7935CBB93C32583BAF5CB74A82_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableRelatedPartiesCurrent_95531A7935CBB93C32583BAF5CB74A82" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts Receivable, Related Parties, Current </link:label>
<link:label id="lab_us-gaap_AccountsReceivableRelatedPartiesCurrent_95531A7935CBB93C32583BAF5CB74A82_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableRelatedPartiesCurrent_95531A7935CBB93C32583BAF5CB74A82" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Receivable, Related Parties, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsReceivableRelatedPartiesCurrent" xlink:label="loc_us-gaap_AccountsReceivableRelatedPartiesCurrent_95531A7935CBB93C32583BAF5CB74A82" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableRelatedPartiesCurrent_95531A7935CBB93C32583BAF5CB74A82" xlink:to="lab_us-gaap_AccountsReceivableRelatedPartiesCurrent_95531A7935CBB93C32583BAF5CB74A82" xlink:type="arc"/>
<link:label id="lab_us-gaap_LoansAndLeasesReceivableRelatedParties_E402DB34D8B88FEE63C53BAF5CB7A7E8_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableRelatedParties_E402DB34D8B88FEE63C53BAF5CB7A7E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable, Related Parties </link:label>
<link:label id="lab_us-gaap_LoansAndLeasesReceivableRelatedParties_E402DB34D8B88FEE63C53BAF5CB7A7E8_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableRelatedParties_E402DB34D8B88FEE63C53BAF5CB7A7E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loans and Leases Receivable, Related Parties </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LoansAndLeasesReceivableRelatedParties" xlink:label="loc_us-gaap_LoansAndLeasesReceivableRelatedParties_E402DB34D8B88FEE63C53BAF5CB7A7E8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansAndLeasesReceivableRelatedParties_E402DB34D8B88FEE63C53BAF5CB7A7E8" xlink:to="lab_us-gaap_LoansAndLeasesReceivableRelatedParties_E402DB34D8B88FEE63C53BAF5CB7A7E8" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeStatementAbstract_B8EDF35D2B88EEE86AD83BAF5D5B40FB_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_B8EDF35D2B88EEE86AD83BAF5D5B40FB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Statement [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_B8EDF35D2B88EEE86AD83BAF5D5B40FB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementAbstract_B8EDF35D2B88EEE86AD83BAF5D5B40FB" xlink:to="lab_us-gaap_IncomeStatementAbstract_B8EDF35D2B88EEE86AD83BAF5D5B40FB" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementTable_A3849DE89E245F7156583BAF5D5B3AA6_terseLabel_en-US" xlink:label="lab_us-gaap_StatementTable_A3849DE89E245F7156583BAF5D5B3AA6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Statement [Table] </link:label>
<link:label id="lab_us-gaap_StatementTable_A3849DE89E245F7156583BAF5D5B3AA6_label_en-US" xlink:label="lab_us-gaap_StatementTable_A3849DE89E245F7156583BAF5D5B3AA6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_A3849DE89E245F7156583BAF5D5B3AA6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementTable_A3849DE89E245F7156583BAF5D5B3AA6" xlink:to="lab_us-gaap_StatementTable_A3849DE89E245F7156583BAF5D5B3AA6" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementScenarioAxis_2F0BAA59F34EFE80FB303BAF5D5BD10E_terseLabel_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_2F0BAA59F34EFE80FB303BAF5D5BD10E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Statement, Scenario [Axis] </link:label>
<link:label id="lab_us-gaap_StatementScenarioAxis_2F0BAA59F34EFE80FB303BAF5D5BD10E_label_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_2F0BAA59F34EFE80FB303BAF5D5BD10E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Scenario [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_2F0BAA59F34EFE80FB303BAF5D5BD10E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementScenarioAxis_2F0BAA59F34EFE80FB303BAF5D5BD10E" xlink:to="lab_us-gaap_StatementScenarioAxis_2F0BAA59F34EFE80FB303BAF5D5BD10E" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScenarioUnspecifiedDomain_3FA00358380547A9B1F73BAF5D5BC4F0_terseLabel_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_3FA00358380547A9B1F73BAF5D5BC4F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Scenario, Unspecified [Domain] </link:label>
<link:label id="lab_us-gaap_ScenarioUnspecifiedDomain_3FA00358380547A9B1F73BAF5D5BC4F0_label_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_3FA00358380547A9B1F73BAF5D5BC4F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Scenario, Unspecified [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_3FA00358380547A9B1F73BAF5D5BC4F0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_3FA00358380547A9B1F73BAF5D5BC4F0" xlink:to="lab_us-gaap_ScenarioUnspecifiedDomain_3FA00358380547A9B1F73BAF5D5BC4F0" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementLineItems_DAE5E2C2B083DB4FEF663BAF5D5BF00E_terseLabel_en-US" xlink:label="lab_us-gaap_StatementLineItems_DAE5E2C2B083DB4FEF663BAF5D5BF00E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Statement [Line Items] </link:label>
<link:label id="lab_us-gaap_StatementLineItems_DAE5E2C2B083DB4FEF663BAF5D5BF00E_label_en-US" xlink:label="lab_us-gaap_StatementLineItems_DAE5E2C2B083DB4FEF663BAF5D5BF00E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_DAE5E2C2B083DB4FEF663BAF5D5BF00E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementLineItems_DAE5E2C2B083DB4FEF663BAF5D5BF00E" xlink:to="lab_us-gaap_StatementLineItems_DAE5E2C2B083DB4FEF663BAF5D5BF00E" xlink:type="arc"/>
<link:label id="lab_us-gaap_SalesRevenueNet_0D75DEF83C0BB67ABFDD3BAF5D5B8EF3_terseLabel_en-US" xlink:label="lab_us-gaap_SalesRevenueNet_0D75DEF83C0BB67ABFDD3BAF5D5B8EF3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net sales </link:label>
<link:label id="lab_us-gaap_SalesRevenueNet_0D75DEF83C0BB67ABFDD3BAF5D5B8EF3_label_en-US" xlink:label="lab_us-gaap_SalesRevenueNet_0D75DEF83C0BB67ABFDD3BAF5D5B8EF3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SalesRevenueNet" xlink:label="loc_us-gaap_SalesRevenueNet_0D75DEF83C0BB67ABFDD3BAF5D5B8EF3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalesRevenueNet_0D75DEF83C0BB67ABFDD3BAF5D5B8EF3" xlink:to="lab_us-gaap_SalesRevenueNet_0D75DEF83C0BB67ABFDD3BAF5D5B8EF3" xlink:type="arc"/>
<link:label id="lab_us-gaap_CostOfGoodsSold_497F4F202544996EFCA93BAF5D5BB2F5_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfGoodsSold_497F4F202544996EFCA93BAF5D5BB2F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cost of sales </link:label>
<link:label id="lab_us-gaap_CostOfGoodsSold_497F4F202544996EFCA93BAF5D5BB2F5_label_en-US" xlink:label="lab_us-gaap_CostOfGoodsSold_497F4F202544996EFCA93BAF5D5BB2F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cost of Goods Sold </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CostOfGoodsSold" xlink:label="loc_us-gaap_CostOfGoodsSold_497F4F202544996EFCA93BAF5D5BB2F5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfGoodsSold_497F4F202544996EFCA93BAF5D5BB2F5" xlink:to="lab_us-gaap_CostOfGoodsSold_497F4F202544996EFCA93BAF5D5BB2F5" xlink:type="arc"/>
<link:label id="lab_us-gaap_GrossProfit_D38B31453E6BB0124C213BAF5D5B7D28_totalLabel_en-US" xlink:label="lab_us-gaap_GrossProfit_D38B31453E6BB0124C213BAF5D5B7D28" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Gross profit </link:label>
<link:label id="lab_us-gaap_GrossProfit_D38B31453E6BB0124C213BAF5D5B7D28_label_en-US" xlink:label="lab_us-gaap_GrossProfit_D38B31453E6BB0124C213BAF5D5B7D28" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gross Profit </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaap_GrossProfit_D38B31453E6BB0124C213BAF5D5B7D28" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GrossProfit_D38B31453E6BB0124C213BAF5D5B7D28" xlink:to="lab_us-gaap_GrossProfit_D38B31453E6BB0124C213BAF5D5B7D28" xlink:type="arc"/>
<link:label id="lab_us-gaap_SellingGeneralAndAdministrativeExpense_0C68433917E5CEE452E53BAF5D5B1CDF_terseLabel_en-US" xlink:label="lab_us-gaap_SellingGeneralAndAdministrativeExpense_0C68433917E5CEE452E53BAF5D5B1CDF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Selling, general and administrative expense </link:label>
<link:label id="lab_us-gaap_SellingGeneralAndAdministrativeExpense_0C68433917E5CEE452E53BAF5D5B1CDF_label_en-US" xlink:label="lab_us-gaap_SellingGeneralAndAdministrativeExpense_0C68433917E5CEE452E53BAF5D5B1CDF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Selling, General and Administrative Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_0C68433917E5CEE452E53BAF5D5B1CDF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SellingGeneralAndAdministrativeExpense_0C68433917E5CEE452E53BAF5D5B1CDF" xlink:to="lab_us-gaap_SellingGeneralAndAdministrativeExpense_0C68433917E5CEE452E53BAF5D5B1CDF" xlink:type="arc"/>
<link:label id="lab_us-gaap_GainLossOnSaleOfBusiness_917D538E257E0393D8A33BAF5D5C33F3_terseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfBusiness_917D538E257E0393D8A33BAF5D5C33F3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Gain on disposition </link:label>
<link:label id="lab_us-gaap_GainLossOnSaleOfBusiness_917D538E257E0393D8A33BAF5D5C33F3_label_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfBusiness_917D538E257E0393D8A33BAF5D5C33F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gain (Loss) on Disposition of Business </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GainLossOnSaleOfBusiness" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_917D538E257E0393D8A33BAF5D5C33F3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnSaleOfBusiness_917D538E257E0393D8A33BAF5D5C33F3" xlink:to="lab_us-gaap_GainLossOnSaleOfBusiness_917D538E257E0393D8A33BAF5D5C33F3" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetImpairmentCharges_3D721CB1990E22F9D5E93BAF5D5C913D_terseLabel_en-US" xlink:label="lab_us-gaap_AssetImpairmentCharges_3D721CB1990E22F9D5E93BAF5D5C913D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Asset impairments </link:label>
<link:label id="lab_us-gaap_AssetImpairmentCharges_3D721CB1990E22F9D5E93BAF5D5C913D_label_en-US" xlink:label="lab_us-gaap_AssetImpairmentCharges_3D721CB1990E22F9D5E93BAF5D5C913D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Asset Impairment Charges </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetImpairmentCharges" xlink:label="loc_us-gaap_AssetImpairmentCharges_3D721CB1990E22F9D5E93BAF5D5C913D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetImpairmentCharges_3D721CB1990E22F9D5E93BAF5D5C913D" xlink:to="lab_us-gaap_AssetImpairmentCharges_3D721CB1990E22F9D5E93BAF5D5C913D" xlink:type="arc"/>
<link:label id="lab_msc_BusinessRealignmentCosts_DB1416D15905CAE00C9D3BAF5D5C3888_terseLabel_en-US" xlink:label="lab_msc_BusinessRealignmentCosts_DB1416D15905CAE00C9D3BAF5D5C3888" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business realignment costs </link:label>
<link:label id="lab_msc_BusinessRealignmentCosts_DB1416D15905CAE00C9D3BAF5D5C3888_label_en-US" xlink:label="lab_msc_BusinessRealignmentCosts_DB1416D15905CAE00C9D3BAF5D5C3888" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business realignment costs </link:label>
<link:label id="lab_msc_BusinessRealignmentCosts_DB1416D15905CAE00C9D3BAF5D5C3888_documentation_en-US" xlink:label="lab_msc_BusinessRealignmentCosts_DB1416D15905CAE00C9D3BAF5D5C3888" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business realignment costs </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_BusinessRealignmentCosts" xlink:label="loc_msc_BusinessRealignmentCosts_DB1416D15905CAE00C9D3BAF5D5C3888" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_BusinessRealignmentCosts_DB1416D15905CAE00C9D3BAF5D5C3888" xlink:to="lab_msc_BusinessRealignmentCosts_DB1416D15905CAE00C9D3BAF5D5C3888" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherOperatingIncomeExpenseNet_7B09733896A63E5EBA713BAF5D5C42B0_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_OtherOperatingIncomeExpenseNet_7B09733896A63E5EBA713BAF5D5C42B0" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Other operating expense (income), net </link:label>
<link:label id="lab_us-gaap_OtherOperatingIncomeExpenseNet_7B09733896A63E5EBA713BAF5D5C42B0_label_en-US" xlink:label="lab_us-gaap_OtherOperatingIncomeExpenseNet_7B09733896A63E5EBA713BAF5D5C42B0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Operating Income (Expense), Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherOperatingIncomeExpenseNet" xlink:label="loc_us-gaap_OtherOperatingIncomeExpenseNet_7B09733896A63E5EBA713BAF5D5C42B0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherOperatingIncomeExpenseNet_7B09733896A63E5EBA713BAF5D5C42B0" xlink:to="lab_us-gaap_OtherOperatingIncomeExpenseNet_7B09733896A63E5EBA713BAF5D5C42B0" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingIncomeLoss_81498C0FE0E46BA4D1A03BAF5D5C2B4B_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_81498C0FE0E46BA4D1A03BAF5D5C2B4B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Operating income </link:label>
<link:label id="lab_us-gaap_OperatingIncomeLoss_81498C0FE0E46BA4D1A03BAF5D5C2B4B_label_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_81498C0FE0E46BA4D1A03BAF5D5C2B4B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Income (Loss) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_81498C0FE0E46BA4D1A03BAF5D5C2B4B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingIncomeLoss_81498C0FE0E46BA4D1A03BAF5D5C2B4B" xlink:to="lab_us-gaap_OperatingIncomeLoss_81498C0FE0E46BA4D1A03BAF5D5C2B4B" xlink:type="arc"/>
<link:label id="lab_us-gaap_InterestIncomeExpenseNet_3F2E8C888273870A58AB3BAF5D5C2BA8_negatedLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_3F2E8C888273870A58AB3BAF5D5C2BA8" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Interest expense, net </link:label>
<link:label id="lab_us-gaap_InterestIncomeExpenseNet_3F2E8C888273870A58AB3BAF5D5C2BA8_label_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_3F2E8C888273870A58AB3BAF5D5C2BA8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Income (Expense), Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_3F2E8C888273870A58AB3BAF5D5C2BA8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestIncomeExpenseNet_3F2E8C888273870A58AB3BAF5D5C2BA8" xlink:to="lab_us-gaap_InterestIncomeExpenseNet_3F2E8C888273870A58AB3BAF5D5C2BA8" xlink:type="arc"/>
<link:label id="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_CC7329D3F8AE2B3D42713BAF5D5C816B_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_CC7329D3F8AE2B3D42713BAF5D5C816B" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Loss on extinguishment of debt </link:label>
<link:label id="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_CC7329D3F8AE2B3D42713BAF5D5C816B_label_en-US" xlink:label="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_CC7329D3F8AE2B3D42713BAF5D5C816B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gain (Loss) on Extinguishment of Debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_CC7329D3F8AE2B3D42713BAF5D5C816B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_CC7329D3F8AE2B3D42713BAF5D5C816B" xlink:to="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_CC7329D3F8AE2B3D42713BAF5D5C816B" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_42AE9C6B8E5E9FC56A453BAF5D5CACD7_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_42AE9C6B8E5E9FC56A453BAF5D5CACD7" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Other non-operating (income) expense, net </link:label>
<link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_42AE9C6B8E5E9FC56A453BAF5D5CACD7_label_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_42AE9C6B8E5E9FC56A453BAF5D5CACD7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Nonoperating Income (Expense) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_42AE9C6B8E5E9FC56A453BAF5D5CACD7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpense_42AE9C6B8E5E9FC56A453BAF5D5CACD7" xlink:to="lab_us-gaap_OtherNonoperatingIncomeExpense_42AE9C6B8E5E9FC56A453BAF5D5CACD7" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_30D4D7E3F503B7866E433BAF5D5C62AA_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_30D4D7E3F503B7866E433BAF5D5C62AA" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Loss before income tax and earnings from unconsolidated entities </link:label>
<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_30D4D7E3F503B7866E433BAF5D5C62AA_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_30D4D7E3F503B7866E433BAF5D5C62AA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_30D4D7E3F503B7866E433BAF5D5C62AA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_30D4D7E3F503B7866E433BAF5D5C62AA" xlink:to="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_30D4D7E3F503B7866E433BAF5D5C62AA" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_986552AF4A07A507C9613BAF5D5CD7CE_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_986552AF4A07A507C9613BAF5D5CD7CE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income tax expense </link:label>
<link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_986552AF4A07A507C9613BAF5D5CD7CE_label_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_986552AF4A07A507C9613BAF5D5CD7CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax Expense (Benefit) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_986552AF4A07A507C9613BAF5D5CD7CE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_986552AF4A07A507C9613BAF5D5CD7CE" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefit_986552AF4A07A507C9613BAF5D5CD7CE" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_3EC491E0775ED006F4A63BAF5D5CB93B_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_3EC491E0775ED006F4A63BAF5D5CB93B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Loss before earnings from unconsolidated entities </link:label>
<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_3EC491E0775ED006F4A63BAF5D5CB93B_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_3EC491E0775ED006F4A63BAF5D5CB93B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_3EC491E0775ED006F4A63BAF5D5CB93B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_3EC491E0775ED006F4A63BAF5D5CB93B" xlink:to="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_3EC491E0775ED006F4A63BAF5D5CB93B" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeLossFromEquityMethodInvestments_946A4ABA57829270BC163BAF5D5C06CA_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromEquityMethodInvestments_946A4ABA57829270BC163BAF5D5C06CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Earnings from unconsolidated entities, net of taxes </link:label>
<link:label id="lab_us-gaap_IncomeLossFromEquityMethodInvestments_946A4ABA57829270BC163BAF5D5C06CA_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromEquityMethodInvestments_946A4ABA57829270BC163BAF5D5C06CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income (Loss) from Equity Method Investments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_946A4ABA57829270BC163BAF5D5C06CA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromEquityMethodInvestments_946A4ABA57829270BC163BAF5D5C06CA" xlink:to="lab_us-gaap_IncomeLossFromEquityMethodInvestments_946A4ABA57829270BC163BAF5D5C06CA" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetIncomeLoss_55E9157E3BF051AF12F23BAF5D5C5844_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_55E9157E3BF051AF12F23BAF5D5C5844" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net loss </link:label>
<link:label id="lab_us-gaap_NetIncomeLoss_55E9157E3BF051AF12F23BAF5D5C5844_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_55E9157E3BF051AF12F23BAF5D5C5844" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Income (Loss) Attributable to Parent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_55E9157E3BF051AF12F23BAF5D5C5844" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_55E9157E3BF051AF12F23BAF5D5C5844" xlink:to="lab_us-gaap_NetIncomeLoss_55E9157E3BF051AF12F23BAF5D5C5844" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueDisclosuresAbstract_46212853CB4F26E62672214782DB687B_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresAbstract_46212853CB4F26E62672214782DB687B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Disclosures [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_46212853CB4F26E62672214782DB687B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_46212853CB4F26E62672214782DB687B" xlink:to="lab_us-gaap_FairValueDisclosuresAbstract_46212853CB4F26E62672214782DB687B" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTable_8E039FA65C8252B6E138214782DB8250_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTable_8E039FA65C8252B6E138214782DB8250" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value, by Balance Sheet Grouping [Table] </link:label>
<link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTable_8E039FA65C8252B6E138214782DB8250_label_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTable_8E039FA65C8252B6E138214782DB8250" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, by Balance Sheet Grouping [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_8E039FA65C8252B6E138214782DB8250" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_8E039FA65C8252B6E138214782DB8250" xlink:to="lab_us-gaap_FairValueByBalanceSheetGroupingTable_8E039FA65C8252B6E138214782DB8250" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_591183972E42D4C6862F214782DB1AEA_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_591183972E42D4C6862F214782DB1AEA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value, Hierarchy [Axis] </link:label>
<link:label id="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_591183972E42D4C6862F214782DB1AEA_label_en-US" xlink:label="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_591183972E42D4C6862F214782DB1AEA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Hierarchy [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_591183972E42D4C6862F214782DB1AEA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_591183972E42D4C6862F214782DB1AEA" xlink:to="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_591183972E42D4C6862F214782DB1AEA" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_FFD7887AF7132B1CF683214782DB5CD4_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_FFD7887AF7132B1CF683214782DB5CD4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value, Measurements, Fair Value Hierarchy [Domain] </link:label>
<link:label id="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_FFD7887AF7132B1CF683214782DB5CD4_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_FFD7887AF7132B1CF683214782DB5CD4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Hierarchy [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_FFD7887AF7132B1CF683214782DB5CD4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_FFD7887AF7132B1CF683214782DB5CD4" xlink:to="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_FFD7887AF7132B1CF683214782DB5CD4" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueInputsLevel1Member_40E2798E21A0150E03FC214782DB2290_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel1Member_40E2798E21A0150E03FC214782DB2290" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value Inputs, Level 1 [Member] </link:label>
<link:label id="lab_us-gaap_FairValueInputsLevel1Member_40E2798E21A0150E03FC214782DB2290_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel1Member_40E2798E21A0150E03FC214782DB2290" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Inputs, Level 1 [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_40E2798E21A0150E03FC214782DB2290" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel1Member_40E2798E21A0150E03FC214782DB2290" xlink:to="lab_us-gaap_FairValueInputsLevel1Member_40E2798E21A0150E03FC214782DB2290" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueInputsLevel2Member_35B74B4A6B3E1CB6800F214782DB5FE5_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member_35B74B4A6B3E1CB6800F214782DB5FE5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value Inputs, Level 2 [Member] </link:label>
<link:label id="lab_us-gaap_FairValueInputsLevel2Member_35B74B4A6B3E1CB6800F214782DB5FE5_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member_35B74B4A6B3E1CB6800F214782DB5FE5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Inputs, Level 2 [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_35B74B4A6B3E1CB6800F214782DB5FE5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel2Member_35B74B4A6B3E1CB6800F214782DB5FE5" xlink:to="lab_us-gaap_FairValueInputsLevel2Member_35B74B4A6B3E1CB6800F214782DB5FE5" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueInputsLevel3Member_32C899DB9EC5DA6D3497214782DBFF89_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member_32C899DB9EC5DA6D3497214782DBFF89" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value Inputs, Level 3 [Member] </link:label>
<link:label id="lab_us-gaap_FairValueInputsLevel3Member_32C899DB9EC5DA6D3497214782DBFF89_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member_32C899DB9EC5DA6D3497214782DBFF89" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Inputs, Level 3 [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_32C899DB9EC5DA6D3497214782DBFF89" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueInputsLevel3Member_32C899DB9EC5DA6D3497214782DBFF89" xlink:to="lab_us-gaap_FairValueInputsLevel3Member_32C899DB9EC5DA6D3497214782DBFF89" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_879B2E4BD5B630D135BF214782DB4728_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_879B2E4BD5B630D135BF214782DB4728" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] </link:label>
<link:label id="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_879B2E4BD5B630D135BF214782DB4728_label_en-US" xlink:label="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_879B2E4BD5B630D135BF214782DB4728" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_879B2E4BD5B630D135BF214782DB4728" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_879B2E4BD5B630D135BF214782DB4728" xlink:to="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_879B2E4BD5B630D135BF214782DB4728" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebt_E820CEFE9907D933779A214782DBC16E_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebt_E820CEFE9907D933779A214782DBC16E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term Debt </link:label>
<link:label id="lab_us-gaap_LongTermDebt_E820CEFE9907D933779A214782DBC16E_label_en-US" xlink:label="lab_us-gaap_LongTermDebt_E820CEFE9907D933779A214782DBC16E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_E820CEFE9907D933779A214782DBC16E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebt_E820CEFE9907D933779A214782DBC16E" xlink:to="lab_us-gaap_LongTermDebt_E820CEFE9907D933779A214782DBC16E" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtLongtermAndShorttermCombinedAmount_74E00AD8A4A4B1BA2BDF214782DBB485_terseLabel_en-US" xlink:label="lab_us-gaap_DebtLongtermAndShorttermCombinedAmount_74E00AD8A4A4B1BA2BDF214782DBB485" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term Debt </link:label>
<link:label id="lab_us-gaap_DebtLongtermAndShorttermCombinedAmount_74E00AD8A4A4B1BA2BDF214782DBB485_label_en-US" xlink:label="lab_us-gaap_DebtLongtermAndShorttermCombinedAmount_74E00AD8A4A4B1BA2BDF214782DBB485" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt, Long-term and Short-term, Combined Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtLongtermAndShorttermCombinedAmount" xlink:label="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_74E00AD8A4A4B1BA2BDF214782DBB485" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_74E00AD8A4A4B1BA2BDF214782DBB485" xlink:to="lab_us-gaap_DebtLongtermAndShorttermCombinedAmount_74E00AD8A4A4B1BA2BDF214782DBB485" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtFairValue_2A871F44D1391693B24F214782DBCB3B_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_2A871F44D1391693B24F214782DBCB3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term Debt, fair value </link:label>
<link:label id="lab_us-gaap_LongTermDebtFairValue_2A871F44D1391693B24F214782DBCB3B_label_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_2A871F44D1391693B24F214782DBCB3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Fair Value </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="loc_us-gaap_LongTermDebtFairValue_2A871F44D1391693B24F214782DBCB3B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtFairValue_2A871F44D1391693B24F214782DBCB3B" xlink:to="lab_us-gaap_LongTermDebtFairValue_2A871F44D1391693B24F214782DBCB3B" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredFinanceCostsGross_778190DC3289D54A69DF21FFFFF6EAA6_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsGross_778190DC3289D54A69DF21FFFFF6EAA6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Issuance Costs, Gross </link:label>
<link:label id="lab_us-gaap_DeferredFinanceCostsGross_778190DC3289D54A69DF21FFFFF6EAA6_label_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsGross_778190DC3289D54A69DF21FFFFF6EAA6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Issuance Costs, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredFinanceCostsGross" xlink:label="loc_us-gaap_DeferredFinanceCostsGross_778190DC3289D54A69DF21FFFFF6EAA6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredFinanceCostsGross_778190DC3289D54A69DF21FFFFF6EAA6" xlink:to="lab_us-gaap_DeferredFinanceCostsGross_778190DC3289D54A69DF21FFFFF6EAA6" xlink:type="arc"/>
<link:label id="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_3974E2392F0A9C89925F0EBF97353F70_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_3974E2392F0A9C89925F0EBF97353F70" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party Transactions Disclosure [Text Block] </link:label>
<link:label id="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_3974E2392F0A9C89925F0EBF97353F70_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_3974E2392F0A9C89925F0EBF97353F70" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party Transactions Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:label="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_3974E2392F0A9C89925F0EBF97353F70" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_3974E2392F0A9C89925F0EBF97353F70" xlink:to="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_3974E2392F0A9C89925F0EBF97353F70" xlink:type="arc"/>
<link:label id="lab_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_499CE881C56FFCE288721C196DC11446_label_en-US" xlink:label="lab_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_499CE881C56FFCE288721C196DC11446" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Discontinued Operations and Disposal Groups [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract" xlink:label="loc_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_499CE881C56FFCE288721C196DC11446" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_499CE881C56FFCE288721C196DC11446" xlink:to="lab_us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_499CE881C56FFCE288721C196DC11446" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_DC831BE60793A1F9D4CB1C196DC2DA8A_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_DC831BE60793A1F9D4CB1C196DC2DA8A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from dispositions, net </link:label>
<link:label id="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_DC831BE60793A1F9D4CB1C196DC2DA8A_label_en-US" xlink:label="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_DC831BE60793A1F9D4CB1C196DC2DA8A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Divestiture of Businesses </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_DC831BE60793A1F9D4CB1C196DC2DA8A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_DC831BE60793A1F9D4CB1C196DC2DA8A" xlink:to="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_DC831BE60793A1F9D4CB1C196DC2DA8A" xlink:type="arc"/>
<link:label id="lab_msc_ChangesOfAccumulatedOtherComprehensiveIncomeAbstract_48893A98E10A094DF5350EBF96E7D555_label_en-US" xlink:label="lab_msc_ChangesOfAccumulatedOtherComprehensiveIncomeAbstract_48893A98E10A094DF5350EBF96E7D555" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Changes of Accumulated Other Comprehensive Income [Abstract] </link:label>
<link:label id="lab_msc_ChangesOfAccumulatedOtherComprehensiveIncomeAbstract_48893A98E10A094DF5350EBF96E7D555_documentation_en-US" xlink:label="lab_msc_ChangesOfAccumulatedOtherComprehensiveIncomeAbstract_48893A98E10A094DF5350EBF96E7D555" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Changes of Accumulated Other Comprehensive Income [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_ChangesOfAccumulatedOtherComprehensiveIncomeAbstract" xlink:label="loc_msc_ChangesOfAccumulatedOtherComprehensiveIncomeAbstract_48893A98E10A094DF5350EBF96E7D555" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_ChangesOfAccumulatedOtherComprehensiveIncomeAbstract_48893A98E10A094DF5350EBF96E7D555" xlink:to="lab_msc_ChangesOfAccumulatedOtherComprehensiveIncomeAbstract_48893A98E10A094DF5350EBF96E7D555" xlink:type="arc"/>
<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_CC5F63ACCE85888A2E8B0EBF96E743B1_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_CC5F63ACCE85888A2E8B0EBF96E743B1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Statement [Table] </link:label>
<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_CC5F63ACCE85888A2E8B0EBF96E743B1_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_CC5F63ACCE85888A2E8B0EBF96E743B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reclassification out of Accumulated Other Comprehensive Income [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_CC5F63ACCE85888A2E8B0EBF96E743B1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_CC5F63ACCE85888A2E8B0EBF96E743B1" xlink:to="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_CC5F63ACCE85888A2E8B0EBF96E743B1" xlink:type="arc"/>
<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_9A2C16C5100E10E6783A0EBF96E72410_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_9A2C16C5100E10E6783A0EBF96E72410" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Reclassification out of Accumulated Other Comprehensive Income [Axis] </link:label>
<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_9A2C16C5100E10E6783A0EBF96E72410_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_9A2C16C5100E10E6783A0EBF96E72410" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reclassification out of Accumulated Other Comprehensive Income [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_9A2C16C5100E10E6783A0EBF96E72410" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_9A2C16C5100E10E6783A0EBF96E72410" xlink:to="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_9A2C16C5100E10E6783A0EBF96E72410" xlink:type="arc"/>
<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_E0ADEBF033EC017A48ED0EBF96E7474C_terseLabel_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_E0ADEBF033EC017A48ED0EBF96E7474C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Reclassification out of Accumulated Other Comprehensive Income [Domain] </link:label>
<link:label id="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_E0ADEBF033EC017A48ED0EBF96E7474C_label_en-US" xlink:label="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_E0ADEBF033EC017A48ED0EBF96E7474C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reclassification out of Accumulated Other Comprehensive Income [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_E0ADEBF033EC017A48ED0EBF96E7474C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_E0ADEBF033EC017A48ED0EBF96E7474C" xlink:to="lab_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_E0ADEBF033EC017A48ED0EBF96E7474C" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementScenarioAxis_38F28EC4339EAEFBE6080EBF96E7A61F_verboseLabel_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_38F28EC4339EAEFBE6080EBF96E7A61F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Scenario [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_38F28EC4339EAEFBE6080EBF96E7A61F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementScenarioAxis_38F28EC4339EAEFBE6080EBF96E7A61F" xlink:to="lab_us-gaap_StatementScenarioAxis_38F28EC4339EAEFBE6080EBF96E7A61F" xlink:type="arc"/>
<link:label id="lab_msc_ChangesinAccumulatedOtherComprehensiveIncomeRollForward_812909226287FECBFED20EBF96E7302D_terseLabel_en-US" xlink:label="lab_msc_ChangesinAccumulatedOtherComprehensiveIncomeRollForward_812909226287FECBFED20EBF96E7302D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Changes in Accumulated Other Comprehensive Income [Roll Forward] </link:label>
<link:label id="lab_msc_ChangesinAccumulatedOtherComprehensiveIncomeRollForward_812909226287FECBFED20EBF96E7302D_label_en-US" xlink:label="lab_msc_ChangesinAccumulatedOtherComprehensiveIncomeRollForward_812909226287FECBFED20EBF96E7302D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Changes in Accumulated Other Comprehensive Income [Roll Forward] </link:label>
<link:label id="lab_msc_ChangesinAccumulatedOtherComprehensiveIncomeRollForward_812909226287FECBFED20EBF96E7302D_documentation_en-US" xlink:label="lab_msc_ChangesinAccumulatedOtherComprehensiveIncomeRollForward_812909226287FECBFED20EBF96E7302D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Changes in Accumulated Other Comprehensive Income [Roll Forward] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_ChangesinAccumulatedOtherComprehensiveIncomeRollForward" xlink:label="loc_msc_ChangesinAccumulatedOtherComprehensiveIncomeRollForward_812909226287FECBFED20EBF96E7302D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_ChangesinAccumulatedOtherComprehensiveIncomeRollForward_812909226287FECBFED20EBF96E7302D" xlink:to="lab_msc_ChangesinAccumulatedOtherComprehensiveIncomeRollForward_812909226287FECBFED20EBF96E7302D" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_B10155E6B65E7C12CB5A0EBF96E7EF14_periodStartLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_B10155E6B65E7C12CB5A0EBF96E7EF14" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Beginning Balance </link:label>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_B10155E6B65E7C12CB5A0EBF96E7EF14_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_B10155E6B65E7C12CB5A0EBF96E7EF14" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Other Comprehensive Income (Loss), Net of Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_B10155E6B65E7C12CB5A0EBF96E7EF14" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_B10155E6B65E7C12CB5A0EBF96E7EF14" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_B10155E6B65E7C12CB5A0EBF96E7EF14" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_215ED12A8E139DA4516F0EBF96E7EE2E_periodStartLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_215ED12A8E139DA4516F0EBF96E7EE2E" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Beginning Balance Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, After Tax </link:label>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_215ED12A8E139DA4516F0EBF96E7EE2E_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_215ED12A8E139DA4516F0EBF96E7EE2E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_215ED12A8E139DA4516F0EBF96E7EE2E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_215ED12A8E139DA4516F0EBF96E7EE2E" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_215ED12A8E139DA4516F0EBF96E7EE2E" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_54924EF3D0A04B8D99370EBF96E7251D_periodStartLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_54924EF3D0A04B8D99370EBF96E7251D" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Beginning Balance Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax </link:label>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_54924EF3D0A04B8D99370EBF96E7251D_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_54924EF3D0A04B8D99370EBF96E7251D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_54924EF3D0A04B8D99370EBF96E7251D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_54924EF3D0A04B8D99370EBF96E7251D" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_54924EF3D0A04B8D99370EBF96E7251D" xlink:type="arc"/>
<link:label id="lab_msc_OtherComprehensiveIncomeBeforeReclassificationsNetOfTax_0A2754AC5884156C495B0EBF96E73A2A_negatedTerseLabel_en-US" xlink:label="lab_msc_OtherComprehensiveIncomeBeforeReclassificationsNetOfTax_0A2754AC5884156C495B0EBF96E73A2A" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Other comprehensive income before reclassifications, net of tax </link:label>
<link:label id="lab_msc_OtherComprehensiveIncomeBeforeReclassificationsNetOfTax_0A2754AC5884156C495B0EBF96E73A2A_label_en-US" xlink:label="lab_msc_OtherComprehensiveIncomeBeforeReclassificationsNetOfTax_0A2754AC5884156C495B0EBF96E73A2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other comprehensive income before reclassifications, net of tax </link:label>
<link:label id="lab_msc_OtherComprehensiveIncomeBeforeReclassificationsNetOfTax_0A2754AC5884156C495B0EBF96E73A2A_documentation_en-US" xlink:label="lab_msc_OtherComprehensiveIncomeBeforeReclassificationsNetOfTax_0A2754AC5884156C495B0EBF96E73A2A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Other comprehensive income before reclassifications, net of tax </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_OtherComprehensiveIncomeBeforeReclassificationsNetOfTax" xlink:label="loc_msc_OtherComprehensiveIncomeBeforeReclassificationsNetOfTax_0A2754AC5884156C495B0EBF96E73A2A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_OtherComprehensiveIncomeBeforeReclassificationsNetOfTax_0A2754AC5884156C495B0EBF96E73A2A" xlink:to="lab_msc_OtherComprehensiveIncomeBeforeReclassificationsNetOfTax_0A2754AC5884156C495B0EBF96E73A2A" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_7FF01328F77F5C5B5D100EBF96E728C4_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_7FF01328F77F5C5B5D100EBF96E728C4" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax </link:label>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_7FF01328F77F5C5B5D100EBF96E728C4_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_7FF01328F77F5C5B5D100EBF96E728C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_7FF01328F77F5C5B5D100EBF96E728C4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_7FF01328F77F5C5B5D100EBF96E728C4" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_7FF01328F77F5C5B5D100EBF96E728C4" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_04FD98235A13A19B69070EBF96E7593F_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_04FD98235A13A19B69070EBF96E7593F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax </link:label>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_04FD98235A13A19B69070EBF96E7593F_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_04FD98235A13A19B69070EBF96E7593F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_04FD98235A13A19B69070EBF96E7593F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_04FD98235A13A19B69070EBF96E7593F" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_04FD98235A13A19B69070EBF96E7593F" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_CC74D9C785C377B799480EBF96E75712_periodEndLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_CC74D9C785C377B799480EBF96E75712" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Ending Balance Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, After Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_CC74D9C785C377B799480EBF96E75712" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_CC74D9C785C377B799480EBF96E75712" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_CC74D9C785C377B799480EBF96E75712" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_D6C95A706AEC9C62711E0EBF96E79D18_periodEndLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_D6C95A706AEC9C62711E0EBF96E79D18" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Ending Balance Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_D6C95A706AEC9C62711E0EBF96E79D18" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_D6C95A706AEC9C62711E0EBF96E79D18" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_D6C95A706AEC9C62711E0EBF96E79D18" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_EC77B10FFE9F137FEE570EBF96E727B4_periodEndLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_EC77B10FFE9F137FEE570EBF96E727B4" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Ending Balance </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_EC77B10FFE9F137FEE570EBF96E727B4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_EC77B10FFE9F137FEE570EBF96E727B4" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_EC77B10FFE9F137FEE570EBF96E727B4" xlink:type="arc"/>
<link:label id="lab_msc_DocumentAndEntityInformationAbstract_DFF1942B25B180848AF60EBF96B81905_label_en-US" xlink:label="lab_msc_DocumentAndEntityInformationAbstract_DFF1942B25B180848AF60EBF96B81905" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document and Entity Information [Abstract] </link:label>
<link:label id="lab_msc_DocumentAndEntityInformationAbstract_DFF1942B25B180848AF60EBF96B81905_documentation_en-US" xlink:label="lab_msc_DocumentAndEntityInformationAbstract_DFF1942B25B180848AF60EBF96B81905" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Document and Entity Information [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_DocumentAndEntityInformationAbstract" xlink:label="loc_msc_DocumentAndEntityInformationAbstract_DFF1942B25B180848AF60EBF96B81905" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_DocumentAndEntityInformationAbstract_DFF1942B25B180848AF60EBF96B81905" xlink:to="lab_msc_DocumentAndEntityInformationAbstract_DFF1942B25B180848AF60EBF96B81905" xlink:type="arc"/>
<link:label id="lab_dei_DocumentInformationTable_FCABDDEDCD1D5EAEDC4B0EBF96B8985A_terseLabel_en-US" xlink:label="lab_dei_DocumentInformationTable_FCABDDEDCD1D5EAEDC4B0EBF96B8985A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Information [Table] </link:label>
<link:label id="lab_dei_DocumentInformationTable_FCABDDEDCD1D5EAEDC4B0EBF96B8985A_label_en-US" xlink:label="lab_dei_DocumentInformationTable_FCABDDEDCD1D5EAEDC4B0EBF96B8985A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Information [Table] </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentInformationTable" xlink:label="loc_dei_DocumentInformationTable_FCABDDEDCD1D5EAEDC4B0EBF96B8985A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentInformationTable_FCABDDEDCD1D5EAEDC4B0EBF96B8985A" xlink:to="lab_dei_DocumentInformationTable_FCABDDEDCD1D5EAEDC4B0EBF96B8985A" xlink:type="arc"/>
<link:label id="lab_dei_DocumentInformationDocumentAxis_14DF0FF36F24440C913D0EBF96B8A2DE_terseLabel_en-US" xlink:label="lab_dei_DocumentInformationDocumentAxis_14DF0FF36F24440C913D0EBF96B8A2DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Information, Document [Axis] </link:label>
<link:label id="lab_dei_DocumentInformationDocumentAxis_14DF0FF36F24440C913D0EBF96B8A2DE_label_en-US" xlink:label="lab_dei_DocumentInformationDocumentAxis_14DF0FF36F24440C913D0EBF96B8A2DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Information, Document [Axis] </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentInformationDocumentAxis" xlink:label="loc_dei_DocumentInformationDocumentAxis_14DF0FF36F24440C913D0EBF96B8A2DE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentInformationDocumentAxis_14DF0FF36F24440C913D0EBF96B8A2DE" xlink:to="lab_dei_DocumentInformationDocumentAxis_14DF0FF36F24440C913D0EBF96B8A2DE" xlink:type="arc"/>
<link:label id="lab_dei_DocumentDomain_26EFF7BD7023213704310EBF96B8D6B1_terseLabel_en-US" xlink:label="lab_dei_DocumentDomain_26EFF7BD7023213704310EBF96B8D6B1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document [Domain] </link:label>
<link:label id="lab_dei_DocumentDomain_26EFF7BD7023213704310EBF96B8D6B1_label_en-US" xlink:label="lab_dei_DocumentDomain_26EFF7BD7023213704310EBF96B8D6B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document [Domain] </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentDomain" xlink:label="loc_dei_DocumentDomain_26EFF7BD7023213704310EBF96B8D6B1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentDomain_26EFF7BD7023213704310EBF96B8D6B1" xlink:to="lab_dei_DocumentDomain_26EFF7BD7023213704310EBF96B8D6B1" xlink:type="arc"/>
<link:label id="lab_dei_DocumentInformationLineItems_81BE326999D744CF3C0D0EBF96B80D3F_terseLabel_en-US" xlink:label="lab_dei_DocumentInformationLineItems_81BE326999D744CF3C0D0EBF96B80D3F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Information [Line Items] </link:label>
<link:label id="lab_dei_DocumentInformationLineItems_81BE326999D744CF3C0D0EBF96B80D3F_label_en-US" xlink:label="lab_dei_DocumentInformationLineItems_81BE326999D744CF3C0D0EBF96B80D3F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Information [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentInformationLineItems" xlink:label="loc_dei_DocumentInformationLineItems_81BE326999D744CF3C0D0EBF96B80D3F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentInformationLineItems_81BE326999D744CF3C0D0EBF96B80D3F" xlink:to="lab_dei_DocumentInformationLineItems_81BE326999D744CF3C0D0EBF96B80D3F" xlink:type="arc"/>
<link:label id="lab_dei_EntityRegistrantName_7E736375CC62CD325CB50EBF96B8E5E9_terseLabel_en-US" xlink:label="lab_dei_EntityRegistrantName_7E736375CC62CD325CB50EBF96B8E5E9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Registrant Name </link:label>
<link:label id="lab_dei_EntityRegistrantName_7E736375CC62CD325CB50EBF96B8E5E9_label_en-US" xlink:label="lab_dei_EntityRegistrantName_7E736375CC62CD325CB50EBF96B8E5E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Registrant Name </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_7E736375CC62CD325CB50EBF96B8E5E9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityRegistrantName_7E736375CC62CD325CB50EBF96B8E5E9" xlink:to="lab_dei_EntityRegistrantName_7E736375CC62CD325CB50EBF96B8E5E9" xlink:type="arc"/>
<link:label id="lab_dei_EntityCentralIndexKey_76D1AAE4C34B34DF77F00EBF96B8A350_terseLabel_en-US" xlink:label="lab_dei_EntityCentralIndexKey_76D1AAE4C34B34DF77F00EBF96B8A350" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Central Index Key </link:label>
<link:label id="lab_dei_EntityCentralIndexKey_76D1AAE4C34B34DF77F00EBF96B8A350_label_en-US" xlink:label="lab_dei_EntityCentralIndexKey_76D1AAE4C34B34DF77F00EBF96B8A350" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Central Index Key </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_76D1AAE4C34B34DF77F00EBF96B8A350" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCentralIndexKey_76D1AAE4C34B34DF77F00EBF96B8A350" xlink:to="lab_dei_EntityCentralIndexKey_76D1AAE4C34B34DF77F00EBF96B8A350" xlink:type="arc"/>
<link:label id="lab_dei_CurrentFiscalYearEndDate_DA61E7A9FBDDD575BDE20EBF96B8FB67_terseLabel_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_DA61E7A9FBDDD575BDE20EBF96B8FB67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current Fiscal Year End Date </link:label>
<link:label id="lab_dei_CurrentFiscalYearEndDate_DA61E7A9FBDDD575BDE20EBF96B8FB67_label_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_DA61E7A9FBDDD575BDE20EBF96B8FB67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Current Fiscal Year End Date </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_DA61E7A9FBDDD575BDE20EBF96B8FB67" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CurrentFiscalYearEndDate_DA61E7A9FBDDD575BDE20EBF96B8FB67" xlink:to="lab_dei_CurrentFiscalYearEndDate_DA61E7A9FBDDD575BDE20EBF96B8FB67" xlink:type="arc"/>
<link:label id="lab_dei_EntityFilerCategory_A3D433896ECF586ACE9C0EBF96B87CAB_terseLabel_en-US" xlink:label="lab_dei_EntityFilerCategory_A3D433896ECF586ACE9C0EBF96B87CAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Filer Category </link:label>
<link:label id="lab_dei_EntityFilerCategory_A3D433896ECF586ACE9C0EBF96B87CAB_label_en-US" xlink:label="lab_dei_EntityFilerCategory_A3D433896ECF586ACE9C0EBF96B87CAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Filer Category </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_A3D433896ECF586ACE9C0EBF96B87CAB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFilerCategory_A3D433896ECF586ACE9C0EBF96B87CAB" xlink:to="lab_dei_EntityFilerCategory_A3D433896ECF586ACE9C0EBF96B87CAB" xlink:type="arc"/>
<link:label id="lab_dei_DocumentType_F45C1DA46D92D93E312A0EBF96B8B540_terseLabel_en-US" xlink:label="lab_dei_DocumentType_F45C1DA46D92D93E312A0EBF96B8B540" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Type </link:label>
<link:label id="lab_dei_DocumentType_F45C1DA46D92D93E312A0EBF96B8B540_label_en-US" xlink:label="lab_dei_DocumentType_F45C1DA46D92D93E312A0EBF96B8B540" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Type </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_F45C1DA46D92D93E312A0EBF96B8B540" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentType_F45C1DA46D92D93E312A0EBF96B8B540" xlink:to="lab_dei_DocumentType_F45C1DA46D92D93E312A0EBF96B8B540" xlink:type="arc"/>
<link:label id="lab_dei_DocumentPeriodEndDate_C4B04304232BFFE29DD50EBF96B8EC21_terseLabel_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_C4B04304232BFFE29DD50EBF96B8EC21" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Period End Date </link:label>
<link:label id="lab_dei_DocumentPeriodEndDate_C4B04304232BFFE29DD50EBF96B8EC21_label_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_C4B04304232BFFE29DD50EBF96B8EC21" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Period End Date </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_C4B04304232BFFE29DD50EBF96B8EC21" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentPeriodEndDate_C4B04304232BFFE29DD50EBF96B8EC21" xlink:to="lab_dei_DocumentPeriodEndDate_C4B04304232BFFE29DD50EBF96B8EC21" xlink:type="arc"/>
<link:label id="lab_dei_DocumentFiscalYearFocus_2482598885D0982BA3840EBF96B8A7AD_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_2482598885D0982BA3840EBF96B8A7AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Fiscal Year Focus </link:label>
<link:label id="lab_dei_DocumentFiscalYearFocus_2482598885D0982BA3840EBF96B8A7AD_label_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_2482598885D0982BA3840EBF96B8A7AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Fiscal Year Focus </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_2482598885D0982BA3840EBF96B8A7AD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalYearFocus_2482598885D0982BA3840EBF96B8A7AD" xlink:to="lab_dei_DocumentFiscalYearFocus_2482598885D0982BA3840EBF96B8A7AD" xlink:type="arc"/>
<link:label id="lab_dei_DocumentFiscalPeriodFocus_9A5B14C1A78E4D3E9A460EBF96B80F55_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_9A5B14C1A78E4D3E9A460EBF96B80F55" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Fiscal Period Focus </link:label>
<link:label id="lab_dei_DocumentFiscalPeriodFocus_9A5B14C1A78E4D3E9A460EBF96B80F55_label_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_9A5B14C1A78E4D3E9A460EBF96B80F55" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Fiscal Period Focus </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_9A5B14C1A78E4D3E9A460EBF96B80F55" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalPeriodFocus_9A5B14C1A78E4D3E9A460EBF96B80F55" xlink:to="lab_dei_DocumentFiscalPeriodFocus_9A5B14C1A78E4D3E9A460EBF96B80F55" xlink:type="arc"/>
<link:label id="lab_dei_AmendmentFlag_47A384CEFFB8F33543790EBF96B85D8C_terseLabel_en-US" xlink:label="lab_dei_AmendmentFlag_47A384CEFFB8F33543790EBF96B85D8C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amendment Flag </link:label>
<link:label id="lab_dei_AmendmentFlag_47A384CEFFB8F33543790EBF96B85D8C_label_en-US" xlink:label="lab_dei_AmendmentFlag_47A384CEFFB8F33543790EBF96B85D8C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Amendment Flag </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_47A384CEFFB8F33543790EBF96B85D8C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AmendmentFlag_47A384CEFFB8F33543790EBF96B85D8C" xlink:to="lab_dei_AmendmentFlag_47A384CEFFB8F33543790EBF96B85D8C" xlink:type="arc"/>
<link:label id="lab_dei_EntityCommonStockSharesOutstanding_18CDD435F03AE51B0BF50EBF96B86746_terseLabel_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_18CDD435F03AE51B0BF50EBF96B86746" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Common Stock, Shares Outstanding </link:label>
<link:label id="lab_dei_EntityCommonStockSharesOutstanding_18CDD435F03AE51B0BF50EBF96B86746_label_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_18CDD435F03AE51B0BF50EBF96B86746" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Common Stock, Shares Outstanding </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_18CDD435F03AE51B0BF50EBF96B86746" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCommonStockSharesOutstanding_18CDD435F03AE51B0BF50EBF96B86746" xlink:to="lab_dei_EntityCommonStockSharesOutstanding_18CDD435F03AE51B0BF50EBF96B86746" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_CF288B9E71D0C0D36B4B21478384E1E2_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_CF288B9E71D0C0D36B4B21478384E1E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Restructuring and Related Costs [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_CF288B9E71D0C0D36B4B21478384E1E2_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_CF288B9E71D0C0D36B4B21478384E1E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Restructuring and Related Costs [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_CF288B9E71D0C0D36B4B21478384E1E2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_CF288B9E71D0C0D36B4B21478384E1E2" xlink:to="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_CF288B9E71D0C0D36B4B21478384E1E2" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConsolidationItemsAxis_539A7413FE70CBAD39BA214783849242_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationItemsAxis_539A7413FE70CBAD39BA214783849242" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Axis] </link:label>
<link:label id="lab_us-gaap_ConsolidationItemsAxis_539A7413FE70CBAD39BA214783849242_label_en-US" xlink:label="lab_us-gaap_ConsolidationItemsAxis_539A7413FE70CBAD39BA214783849242" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidationItemsAxis" xlink:label="loc_us-gaap_ConsolidationItemsAxis_539A7413FE70CBAD39BA214783849242" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationItemsAxis_539A7413FE70CBAD39BA214783849242" xlink:to="lab_us-gaap_ConsolidationItemsAxis_539A7413FE70CBAD39BA214783849242" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConsolidationItemsDomain_5CE6E535B05CE9D36C0721478384E7EB_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationItemsDomain_5CE6E535B05CE9D36C0721478384E7EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Domain] </link:label>
<link:label id="lab_us-gaap_ConsolidationItemsDomain_5CE6E535B05CE9D36C0721478384E7EB_label_en-US" xlink:label="lab_us-gaap_ConsolidationItemsDomain_5CE6E535B05CE9D36C0721478384E7EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_5CE6E535B05CE9D36C0721478384E7EB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationItemsDomain_5CE6E535B05CE9D36C0721478384E7EB" xlink:to="lab_us-gaap_ConsolidationItemsDomain_5CE6E535B05CE9D36C0721478384E7EB" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessAcquisitionAxis_ADC3CA5BE1B38410C0AB21478384FB40_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_ADC3CA5BE1B38410C0AB21478384FB40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Acquisition [Axis] </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionAxis_ADC3CA5BE1B38410C0AB21478384FB40_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_ADC3CA5BE1B38410C0AB21478384FB40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_ADC3CA5BE1B38410C0AB21478384FB40" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_ADC3CA5BE1B38410C0AB21478384FB40" xlink:to="lab_us-gaap_BusinessAcquisitionAxis_ADC3CA5BE1B38410C0AB21478384FB40" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_5ED43ACE41F2F36EB46921478384F9EF_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_5ED43ACE41F2F36EB46921478384F9EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Business Acquisition, Acquiree [Domain] </link:label>
<link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_5ED43ACE41F2F36EB46921478384F9EF_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_5ED43ACE41F2F36EB46921478384F9EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Acquisition, Acquiree [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_5ED43ACE41F2F36EB46921478384F9EF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_5ED43ACE41F2F36EB46921478384F9EF" xlink:to="lab_us-gaap_BusinessAcquisitionAcquireeDomain_5ED43ACE41F2F36EB46921478384F9EF" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestructuringCostAndReserveAxis_3872399BD2B5AD78D1E2214783846FE6_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringCostAndReserveAxis_3872399BD2B5AD78D1E2214783846FE6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restructuring Type [Axis] </link:label>
<link:label id="lab_us-gaap_RestructuringCostAndReserveAxis_3872399BD2B5AD78D1E2214783846FE6_label_en-US" xlink:label="lab_us-gaap_RestructuringCostAndReserveAxis_3872399BD2B5AD78D1E2214783846FE6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring Type [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_3872399BD2B5AD78D1E2214783846FE6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_3872399BD2B5AD78D1E2214783846FE6" xlink:to="lab_us-gaap_RestructuringCostAndReserveAxis_3872399BD2B5AD78D1E2214783846FE6" xlink:type="arc"/>
<link:label id="lab_us-gaap_TypeOfRestructuringDomain_498A49ACF3C5BB6B10EF21478384CBCA_terseLabel_en-US" xlink:label="lab_us-gaap_TypeOfRestructuringDomain_498A49ACF3C5BB6B10EF21478384CBCA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Type of Restructuring [Domain] </link:label>
<link:label id="lab_us-gaap_TypeOfRestructuringDomain_498A49ACF3C5BB6B10EF21478384CBCA_label_en-US" xlink:label="lab_us-gaap_TypeOfRestructuringDomain_498A49ACF3C5BB6B10EF21478384CBCA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Type of Restructuring [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_498A49ACF3C5BB6B10EF21478384CBCA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_498A49ACF3C5BB6B10EF21478384CBCA" xlink:to="lab_us-gaap_TypeOfRestructuringDomain_498A49ACF3C5BB6B10EF21478384CBCA" xlink:type="arc"/>
<link:label id="lab_msc_NorcoMember_9F11AFA2573809F1DFBC2147838405CB_terseLabel_en-US" xlink:label="lab_msc_NorcoMember_9F11AFA2573809F1DFBC2147838405CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Norco [Member] </link:label>
<link:label id="lab_msc_NorcoMember_9F11AFA2573809F1DFBC2147838405CB_label_en-US" xlink:label="lab_msc_NorcoMember_9F11AFA2573809F1DFBC2147838405CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Norco [Member] </link:label>
<link:label id="lab_msc_NorcoMember_9F11AFA2573809F1DFBC2147838405CB_documentation_en-US" xlink:label="lab_msc_NorcoMember_9F11AFA2573809F1DFBC2147838405CB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Norco [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_NorcoMember" xlink:label="loc_msc_NorcoMember_9F11AFA2573809F1DFBC2147838405CB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_NorcoMember_9F11AFA2573809F1DFBC2147838405CB" xlink:to="lab_msc_NorcoMember_9F11AFA2573809F1DFBC2147838405CB" xlink:type="arc"/>
<link:label id="lab_us-gaap_ContractTerminationMember_787F0849B387163FACD52147838486CA_terseLabel_en-US" xlink:label="lab_us-gaap_ContractTerminationMember_787F0849B387163FACD52147838486CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Contract Termination [Member] </link:label>
<link:label id="lab_us-gaap_ContractTerminationMember_787F0849B387163FACD52147838486CA_label_en-US" xlink:label="lab_us-gaap_ContractTerminationMember_787F0849B387163FACD52147838486CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract Termination [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ContractTerminationMember" xlink:label="loc_us-gaap_ContractTerminationMember_787F0849B387163FACD52147838486CA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractTerminationMember_787F0849B387163FACD52147838486CA" xlink:to="lab_us-gaap_ContractTerminationMember_787F0849B387163FACD52147838486CA" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherRestructuringMember_57D282C84A3D590BD92721478384830A_terseLabel_en-US" xlink:label="lab_us-gaap_OtherRestructuringMember_57D282C84A3D590BD92721478384830A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Restructuring [Member] </link:label>
<link:label id="lab_us-gaap_OtherRestructuringMember_57D282C84A3D590BD92721478384830A_label_en-US" xlink:label="lab_us-gaap_OtherRestructuringMember_57D282C84A3D590BD92721478384830A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Restructuring [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherRestructuringMember" xlink:label="loc_us-gaap_OtherRestructuringMember_57D282C84A3D590BD92721478384830A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherRestructuringMember_57D282C84A3D590BD92721478384830A" xlink:to="lab_us-gaap_OtherRestructuringMember_57D282C84A3D590BD92721478384830A" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestructuringPlanAxis_4F7B1F68FF3AB8ECB8B6214783848E2B_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringPlanAxis_4F7B1F68FF3AB8ECB8B6214783848E2B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restructuring Plan [Axis] </link:label>
<link:label id="lab_us-gaap_RestructuringPlanAxis_4F7B1F68FF3AB8ECB8B6214783848E2B_label_en-US" xlink:label="lab_us-gaap_RestructuringPlanAxis_4F7B1F68FF3AB8ECB8B6214783848E2B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring Plan [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="loc_us-gaap_RestructuringPlanAxis_4F7B1F68FF3AB8ECB8B6214783848E2B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringPlanAxis_4F7B1F68FF3AB8ECB8B6214783848E2B" xlink:to="lab_us-gaap_RestructuringPlanAxis_4F7B1F68FF3AB8ECB8B6214783848E2B" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestructuringPlanDomain_9D5A3E68CC88952AE389214783841C51_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringPlanDomain_9D5A3E68CC88952AE389214783841C51" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restructuring Plan [Domain] </link:label>
<link:label id="lab_us-gaap_RestructuringPlanDomain_9D5A3E68CC88952AE389214783841C51_label_en-US" xlink:label="lab_us-gaap_RestructuringPlanDomain_9D5A3E68CC88952AE389214783841C51" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring Plan [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_9D5A3E68CC88952AE389214783841C51" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringPlanDomain_9D5A3E68CC88952AE389214783841C51" xlink:to="lab_us-gaap_RestructuringPlanDomain_9D5A3E68CC88952AE389214783841C51" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeStatementLocationAxis_F85E9CC882523C79972921478384BF94_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationAxis_F85E9CC882523C79972921478384BF94" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income Statement Location [Axis] </link:label>
<link:label id="lab_us-gaap_IncomeStatementLocationAxis_F85E9CC882523C79972921478384BF94_label_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationAxis_F85E9CC882523C79972921478384BF94" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Statement Location [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_F85E9CC882523C79972921478384BF94" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_F85E9CC882523C79972921478384BF94" xlink:to="lab_us-gaap_IncomeStatementLocationAxis_F85E9CC882523C79972921478384BF94" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeStatementLocationDomain_8EE17341FB2683C1F30521478384DC75_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationDomain_8EE17341FB2683C1F30521478384DC75" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income Statement Location [Domain] </link:label>
<link:label id="lab_us-gaap_IncomeStatementLocationDomain_8EE17341FB2683C1F30521478384DC75_label_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationDomain_8EE17341FB2683C1F30521478384DC75" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Statement Location [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_8EE17341FB2683C1F30521478384DC75" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_8EE17341FB2683C1F30521478384DC75" xlink:to="lab_us-gaap_IncomeStatementLocationDomain_8EE17341FB2683C1F30521478384DC75" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLocationAxis_E18CBDA86382B534CFA421478384E831_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLocationAxis_E18CBDA86382B534CFA421478384E831" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income Location [Axis] </link:label>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLocationAxis_E18CBDA86382B534CFA421478384E831_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLocationAxis_E18CBDA86382B534CFA421478384E831" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income Location [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLocationAxis" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLocationAxis_E18CBDA86382B534CFA421478384E831" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLocationAxis_E18CBDA86382B534CFA421478384E831" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLocationAxis_E18CBDA86382B534CFA421478384E831" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLocationDomain_A7CBF5209711306BFF9A214783844D70_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLocationDomain_A7CBF5209711306BFF9A214783844D70" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income Location [Domain] </link:label>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLocationDomain_A7CBF5209711306BFF9A214783844D70_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLocationDomain_A7CBF5209711306BFF9A214783844D70" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income Location [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLocationDomain" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLocationDomain_A7CBF5209711306BFF9A214783844D70" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLocationDomain_A7CBF5209711306BFF9A214783844D70" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLocationDomain_A7CBF5209711306BFF9A214783844D70" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestructuringCostAndReserveLineItems_93452A47DC355638EDBF21478384B102_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringCostAndReserveLineItems_93452A47DC355638EDBF21478384B102" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restructuring Cost and Reserve [Line Items] </link:label>
<link:label id="lab_us-gaap_RestructuringCostAndReserveLineItems_93452A47DC355638EDBF21478384B102_label_en-US" xlink:label="lab_us-gaap_RestructuringCostAndReserveLineItems_93452A47DC355638EDBF21478384B102" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring Cost and Reserve [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_93452A47DC355638EDBF21478384B102" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_93452A47DC355638EDBF21478384B102" xlink:to="lab_us-gaap_RestructuringCostAndReserveLineItems_93452A47DC355638EDBF21478384B102" xlink:type="arc"/>
<link:label id="lab_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_F04EA66D8E0BCB0ACB89214783847DF1_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_F04EA66D8E0BCB0ACB89214783847DF1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impairment of Long-Lived Assets to be Disposed of </link:label>
<link:label id="lab_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_F04EA66D8E0BCB0ACB89214783847DF1_label_en-US" xlink:label="lab_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_F04EA66D8E0BCB0ACB89214783847DF1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impairment of Long-Lived Assets to be Disposed of </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_F04EA66D8E0BCB0ACB89214783847DF1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_F04EA66D8E0BCB0ACB89214783847DF1" xlink:to="lab_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_F04EA66D8E0BCB0ACB89214783847DF1" xlink:type="arc"/>
<link:label id="lab_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_144D20FDDAD46154AB0921478384DD44_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_144D20FDDAD46154AB0921478384DD44" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impairment of Intangible Assets (Excluding Goodwill) </link:label>
<link:label id="lab_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_144D20FDDAD46154AB0921478384DD44_label_en-US" xlink:label="lab_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_144D20FDDAD46154AB0921478384DD44" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impairment of Intangible Assets (Excluding Goodwill) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_144D20FDDAD46154AB0921478384DD44" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_144D20FDDAD46154AB0921478384DD44" xlink:to="lab_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_144D20FDDAD46154AB0921478384DD44" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_D9B128EB8037380765670EBF96A8EC60_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_D9B128EB8037380765670EBF96A8EC60" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restructuring and Related Activities Disclosure [Text Block] </link:label>
<link:label id="lab_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_D9B128EB8037380765670EBF96A8EC60_label_en-US" xlink:label="lab_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_D9B128EB8037380765670EBF96A8EC60" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring and Related Activities Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock" xlink:label="loc_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_D9B128EB8037380765670EBF96A8EC60" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_D9B128EB8037380765670EBF96A8EC60" xlink:to="lab_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_D9B128EB8037380765670EBF96A8EC60" xlink:type="arc"/>
<link:label id="lab_msc_GuarantorCondensedConsolidatingStatementsOfOperationsAbstract_B2C757AD066AF06855A4278DA2DCE493_label_en-US" xlink:label="lab_msc_GuarantorCondensedConsolidatingStatementsOfOperationsAbstract_B2C757AD066AF06855A4278DA2DCE493" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Guarantor - Condensed Consolidating Statements of Operations [Abstract] </link:label>
<link:label id="lab_msc_GuarantorCondensedConsolidatingStatementsOfOperationsAbstract_B2C757AD066AF06855A4278DA2DCE493_documentation_en-US" xlink:label="lab_msc_GuarantorCondensedConsolidatingStatementsOfOperationsAbstract_B2C757AD066AF06855A4278DA2DCE493" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Guarantor - Condensed Consolidating Statements of Operations [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_GuarantorCondensedConsolidatingStatementsOfOperationsAbstract" xlink:label="loc_msc_GuarantorCondensedConsolidatingStatementsOfOperationsAbstract_B2C757AD066AF06855A4278DA2DCE493" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_GuarantorCondensedConsolidatingStatementsOfOperationsAbstract_B2C757AD066AF06855A4278DA2DCE493" xlink:to="lab_msc_GuarantorCondensedConsolidatingStatementsOfOperationsAbstract_B2C757AD066AF06855A4278DA2DCE493" xlink:type="arc"/>
<link:label id="lab_dei_LegalEntityAxis_0BC24DB87DC189617A59278DA2E0D432_terseLabel_en-US" xlink:label="lab_dei_LegalEntityAxis_0BC24DB87DC189617A59278DA2E0D432" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Legal Entity [Axis] </link:label>
<link:label id="lab_dei_LegalEntityAxis_0BC24DB87DC189617A59278DA2E0D432_label_en-US" xlink:label="lab_dei_LegalEntityAxis_0BC24DB87DC189617A59278DA2E0D432" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Legal Entity [Axis] </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_0BC24DB87DC189617A59278DA2E0D432" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LegalEntityAxis_0BC24DB87DC189617A59278DA2E0D432" xlink:to="lab_dei_LegalEntityAxis_0BC24DB87DC189617A59278DA2E0D432" xlink:type="arc"/>
<link:label id="lab_dei_EntityDomain_F5556887C16830B82011278DA2E07260_terseLabel_en-US" xlink:label="lab_dei_EntityDomain_F5556887C16830B82011278DA2E07260" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity [Domain] </link:label>
<link:label id="lab_dei_EntityDomain_F5556887C16830B82011278DA2E07260_label_en-US" xlink:label="lab_dei_EntityDomain_F5556887C16830B82011278DA2E07260" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity [Domain] </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_F5556887C16830B82011278DA2E07260" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityDomain_F5556887C16830B82011278DA2E07260" xlink:to="lab_dei_EntityDomain_F5556887C16830B82011278DA2E07260" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConsolidationEliminationsMember_695F9F0077E191459004278DA2E254AC_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationEliminationsMember_695F9F0077E191459004278DA2E254AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Consolidation, Eliminations [Member] </link:label>
<link:label id="lab_us-gaap_ConsolidationEliminationsMember_695F9F0077E191459004278DA2E254AC_label_en-US" xlink:label="lab_us-gaap_ConsolidationEliminationsMember_695F9F0077E191459004278DA2E254AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation, Eliminations [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidationEliminationsMember" xlink:label="loc_us-gaap_ConsolidationEliminationsMember_695F9F0077E191459004278DA2E254AC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationEliminationsMember_695F9F0077E191459004278DA2E254AC" xlink:to="lab_us-gaap_ConsolidationEliminationsMember_695F9F0077E191459004278DA2E254AC" xlink:type="arc"/>
<link:label id="lab_us-gaap_GuarantorSubsidiariesMember_DEB3C233720371715A23278DA2E241E2_terseLabel_en-US" xlink:label="lab_us-gaap_GuarantorSubsidiariesMember_DEB3C233720371715A23278DA2E241E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Combined Subsidiary Guarantors [Member] </link:label>
<link:label id="lab_us-gaap_GuarantorSubsidiariesMember_DEB3C233720371715A23278DA2E241E2_label_en-US" xlink:label="lab_us-gaap_GuarantorSubsidiariesMember_DEB3C233720371715A23278DA2E241E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Guarantor Subsidiaries [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GuarantorSubsidiariesMember" xlink:label="loc_us-gaap_GuarantorSubsidiariesMember_DEB3C233720371715A23278DA2E241E2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuarantorSubsidiariesMember_DEB3C233720371715A23278DA2E241E2" xlink:to="lab_us-gaap_GuarantorSubsidiariesMember_DEB3C233720371715A23278DA2E241E2" xlink:type="arc"/>
<link:label id="lab_us-gaap_NonGuarantorSubsidiariesMember_ABAEC7CD1572C87BE6F1278DA2E2ACCC_terseLabel_en-US" xlink:label="lab_us-gaap_NonGuarantorSubsidiariesMember_ABAEC7CD1572C87BE6F1278DA2E2ACCC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Combined Non-Guarantor Subsidiaries [Member] </link:label>
<link:label id="lab_us-gaap_NonGuarantorSubsidiariesMember_ABAEC7CD1572C87BE6F1278DA2E2ACCC_label_en-US" xlink:label="lab_us-gaap_NonGuarantorSubsidiariesMember_ABAEC7CD1572C87BE6F1278DA2E2ACCC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Non-Guarantor Subsidiaries [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NonGuarantorSubsidiariesMember" xlink:label="loc_us-gaap_NonGuarantorSubsidiariesMember_ABAEC7CD1572C87BE6F1278DA2E2ACCC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonGuarantorSubsidiariesMember_ABAEC7CD1572C87BE6F1278DA2E2ACCC" xlink:to="lab_us-gaap_NonGuarantorSubsidiariesMember_ABAEC7CD1572C87BE6F1278DA2E2ACCC" xlink:type="arc"/>
<link:label id="lab_us-gaap_GainLossOnSaleOfBusiness_212A0D87E0511AE0E5D8278DA2E3B0AC_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfBusiness_212A0D87E0511AE0E5D8278DA2E3B0AC" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Gain on disposition </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GainLossOnSaleOfBusiness" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_212A0D87E0511AE0E5D8278DA2E3B0AC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnSaleOfBusiness_212A0D87E0511AE0E5D8278DA2E3B0AC" xlink:to="lab_us-gaap_GainLossOnSaleOfBusiness_212A0D87E0511AE0E5D8278DA2E3B0AC" xlink:type="arc"/>
<link:label id="lab_msc_BusinessRealignmentCosts_87347D932B64A906EB00278DA2E387C4_verboseLabel_en-US" xlink:label="lab_msc_BusinessRealignmentCosts_87347D932B64A906EB00278DA2E387C4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Business realignment costs </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_BusinessRealignmentCosts" xlink:label="loc_msc_BusinessRealignmentCosts_87347D932B64A906EB00278DA2E387C4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_BusinessRealignmentCosts_87347D932B64A906EB00278DA2E387C4" xlink:to="lab_msc_BusinessRealignmentCosts_87347D932B64A906EB00278DA2E387C4" xlink:type="arc"/>
<link:label id="lab_msc_IntercompanyInterestExpenseIncome_AF01C35D32F2AF65AECA278DA2E3B23A_terseLabel_en-US" xlink:label="lab_msc_IntercompanyInterestExpenseIncome_AF01C35D32F2AF65AECA278DA2E3B23A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intercompany interest expense (income) </link:label>
<link:label id="lab_msc_IntercompanyInterestExpenseIncome_AF01C35D32F2AF65AECA278DA2E3B23A_label_en-US" xlink:label="lab_msc_IntercompanyInterestExpenseIncome_AF01C35D32F2AF65AECA278DA2E3B23A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intercompany Interest Expense (Income) </link:label>
<link:label id="lab_msc_IntercompanyInterestExpenseIncome_AF01C35D32F2AF65AECA278DA2E3B23A_documentation_en-US" xlink:label="lab_msc_IntercompanyInterestExpenseIncome_AF01C35D32F2AF65AECA278DA2E3B23A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Intercompany Interest Expense (Income) </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_IntercompanyInterestExpenseIncome" xlink:label="loc_msc_IntercompanyInterestExpenseIncome_AF01C35D32F2AF65AECA278DA2E3B23A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyInterestExpenseIncome_AF01C35D32F2AF65AECA278DA2E3B23A" xlink:to="lab_msc_IntercompanyInterestExpenseIncome_AF01C35D32F2AF65AECA278DA2E3B23A" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeLossFromEquityMethodInvestments_70E0B6F8A886409C8822278DA2E320CB_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromEquityMethodInvestments_70E0B6F8A886409C8822278DA2E320CB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> (Losses) earnings from unconsolidated entities, net of taxes </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_70E0B6F8A886409C8822278DA2E320CB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromEquityMethodInvestments_70E0B6F8A886409C8822278DA2E320CB" xlink:to="lab_us-gaap_IncomeLossFromEquityMethodInvestments_70E0B6F8A886409C8822278DA2E320CB" xlink:type="arc"/>
<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_DBA8F1DBA890926C1023278DA2E39DB2_terseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_DBA8F1DBA890926C1023278DA2E39DB2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Comprehensive income (loss) </link:label>
<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_DBA8F1DBA890926C1023278DA2E39DB2_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_DBA8F1DBA890926C1023278DA2E39DB2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Comprehensive Income (Loss), Net of Tax, Attributable to Parent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_DBA8F1DBA890926C1023278DA2E39DB2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_DBA8F1DBA890926C1023278DA2E39DB2" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTax_DBA8F1DBA890926C1023278DA2E39DB2" xlink:type="arc"/>
<link:label id="lab_msc_SummarizedFinancialInformationOfUnconsolidatedAffiliateAbstract_1401D637955FF7566DF50EBF966A7040_label_en-US" xlink:label="lab_msc_SummarizedFinancialInformationOfUnconsolidatedAffiliateAbstract_1401D637955FF7566DF50EBF966A7040" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Summarized Financial Information of Unconsolidated Affiliate [Abstract] </link:label>
<link:label id="lab_msc_SummarizedFinancialInformationOfUnconsolidatedAffiliateAbstract_1401D637955FF7566DF50EBF966A7040_documentation_en-US" xlink:label="lab_msc_SummarizedFinancialInformationOfUnconsolidatedAffiliateAbstract_1401D637955FF7566DF50EBF966A7040" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Summarized Financial Information of Unconsolidated Affiliate [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_SummarizedFinancialInformationOfUnconsolidatedAffiliateAbstract" xlink:label="loc_msc_SummarizedFinancialInformationOfUnconsolidatedAffiliateAbstract_1401D637955FF7566DF50EBF966A7040" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SummarizedFinancialInformationOfUnconsolidatedAffiliateAbstract_1401D637955FF7566DF50EBF966A7040" xlink:to="lab_msc_SummarizedFinancialInformationOfUnconsolidatedAffiliateAbstract_1401D637955FF7566DF50EBF966A7040" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfVariableInterestEntitiesTable_675255122D713822C5460EBF966A87C1_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfVariableInterestEntitiesTable_675255122D713822C5460EBF966A87C1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Variable Interest Entities [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfVariableInterestEntitiesTable_675255122D713822C5460EBF966A87C1_label_en-US" xlink:label="lab_us-gaap_ScheduleOfVariableInterestEntitiesTable_675255122D713822C5460EBF966A87C1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Variable Interest Entities [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfVariableInterestEntitiesTable" xlink:label="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_675255122D713822C5460EBF966A87C1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfVariableInterestEntitiesTable_675255122D713822C5460EBF966A87C1" xlink:to="lab_us-gaap_ScheduleOfVariableInterestEntitiesTable_675255122D713822C5460EBF966A87C1" xlink:type="arc"/>
<link:label id="lab_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_4E99C1BCBC2821B70B810EBF966A89ED_terseLabel_en-US" xlink:label="lab_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_4E99C1BCBC2821B70B810EBF966A89ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Variable Interest Entities by Classification of Entity [Axis] </link:label>
<link:label id="lab_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_4E99C1BCBC2821B70B810EBF966A89ED_label_en-US" xlink:label="lab_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_4E99C1BCBC2821B70B810EBF966A89ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Variable Interest Entities [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis" xlink:label="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_4E99C1BCBC2821B70B810EBF966A89ED" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_4E99C1BCBC2821B70B810EBF966A89ED" xlink:to="lab_us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_4E99C1BCBC2821B70B810EBF966A89ED" xlink:type="arc"/>
<link:label id="lab_us-gaap_ClassificationOfVariableInterestEntityDomain_C86B2087730A9ED08F950EBF966A57ED_terseLabel_en-US" xlink:label="lab_us-gaap_ClassificationOfVariableInterestEntityDomain_C86B2087730A9ED08F950EBF966A57ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Variable Interest Entity, Classification [Domain] </link:label>
<link:label id="lab_us-gaap_ClassificationOfVariableInterestEntityDomain_C86B2087730A9ED08F950EBF966A57ED_label_en-US" xlink:label="lab_us-gaap_ClassificationOfVariableInterestEntityDomain_C86B2087730A9ED08F950EBF966A57ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Variable Interest Entity, Classification [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:label="loc_us-gaap_ClassificationOfVariableInterestEntityDomain_C86B2087730A9ED08F950EBF966A57ED" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassificationOfVariableInterestEntityDomain_C86B2087730A9ED08F950EBF966A57ED" xlink:to="lab_us-gaap_ClassificationOfVariableInterestEntityDomain_C86B2087730A9ED08F950EBF966A57ED" xlink:type="arc"/>
<link:label id="lab_us-gaap_VariableInterestEntityLineItems_D10900F3595A6D88D0E80EBF966A6463_terseLabel_en-US" xlink:label="lab_us-gaap_VariableInterestEntityLineItems_D10900F3595A6D88D0E80EBF966A6463" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> HAI Summarized Financial Information [Line Items] </link:label>
<link:label id="lab_us-gaap_VariableInterestEntityLineItems_D10900F3595A6D88D0E80EBF966A6463_label_en-US" xlink:label="lab_us-gaap_VariableInterestEntityLineItems_D10900F3595A6D88D0E80EBF966A6463" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Variable Interest Entity [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_VariableInterestEntityLineItems" xlink:label="loc_us-gaap_VariableInterestEntityLineItems_D10900F3595A6D88D0E80EBF966A6463" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableInterestEntityLineItems_D10900F3595A6D88D0E80EBF966A6463" xlink:to="lab_us-gaap_VariableInterestEntityLineItems_D10900F3595A6D88D0E80EBF966A6463" xlink:type="arc"/>
<link:label id="lab_msc_BalanceSheetParentheticalAbstract_8B77CD422501F71BFADB024768780014_label_en-US" xlink:label="lab_msc_BalanceSheetParentheticalAbstract_8B77CD422501F71BFADB024768780014" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Balance Sheet Parenthetical [Abstract] </link:label>
<link:label id="lab_msc_BalanceSheetParentheticalAbstract_8B77CD422501F71BFADB024768780014_documentation_en-US" xlink:label="lab_msc_BalanceSheetParentheticalAbstract_8B77CD422501F71BFADB024768780014" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Balance Sheet Parenthetical [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_BalanceSheetParentheticalAbstract" xlink:label="loc_msc_BalanceSheetParentheticalAbstract_8B77CD422501F71BFADB024768780014" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_BalanceSheetParentheticalAbstract_8B77CD422501F71BFADB024768780014" xlink:to="lab_msc_BalanceSheetParentheticalAbstract_8B77CD422501F71BFADB024768780014" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementClassOfStockAxis_44A5CC3742E4B47ADF9802476878DED6_terseLabel_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_44A5CC3742E4B47ADF9802476878DED6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Class of Stock [Axis] </link:label>
<link:label id="lab_us-gaap_StatementClassOfStockAxis_44A5CC3742E4B47ADF9802476878DED6_label_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_44A5CC3742E4B47ADF9802476878DED6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Class of Stock [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_44A5CC3742E4B47ADF9802476878DED6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementClassOfStockAxis_44A5CC3742E4B47ADF9802476878DED6" xlink:to="lab_us-gaap_StatementClassOfStockAxis_44A5CC3742E4B47ADF9802476878DED6" xlink:type="arc"/>
<link:label id="lab_us-gaap_ClassOfStockDomain_6652DAF2CAAD17AFC17402476878E73D_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_6652DAF2CAAD17AFC17402476878E73D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Class of Stock [Domain] </link:label>
<link:label id="lab_us-gaap_ClassOfStockDomain_6652DAF2CAAD17AFC17402476878E73D_label_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_6652DAF2CAAD17AFC17402476878E73D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Class of Stock [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_6652DAF2CAAD17AFC17402476878E73D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfStockDomain_6652DAF2CAAD17AFC17402476878E73D" xlink:to="lab_us-gaap_ClassOfStockDomain_6652DAF2CAAD17AFC17402476878E73D" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetsCurrentAbstract_F85176FF586983A63A0602476878D320_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_F85176FF586983A63A0602476878D320" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current assets </link:label>
<link:label id="lab_us-gaap_AssetsCurrentAbstract_F85176FF586983A63A0602476878D320_label_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_F85176FF586983A63A0602476878D320" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets, Current [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_F85176FF586983A63A0602476878D320" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrentAbstract_F85176FF586983A63A0602476878D320" xlink:to="lab_us-gaap_AssetsCurrentAbstract_F85176FF586983A63A0602476878D320" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashAndCashEquivalentsAbstract_7DF4185060D2778EB5B802476878271A_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAbstract_7DF4185060D2778EB5B802476878271A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents </link:label>
<link:label id="lab_us-gaap_CashAndCashEquivalentsAbstract_7DF4185060D2778EB5B802476878271A_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAbstract_7DF4185060D2778EB5B802476878271A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsAbstract" xlink:label="loc_us-gaap_CashAndCashEquivalentsAbstract_7DF4185060D2778EB5B802476878271A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAbstract_7DF4185060D2778EB5B802476878271A" xlink:to="lab_us-gaap_CashAndCashEquivalentsAbstract_7DF4185060D2778EB5B802476878271A" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_952C007866761511D1B302476878F60E_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_952C007866761511D1B302476878F60E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted Cash and Cash Equivalents, Current </link:label>
<link:label id="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_952C007866761511D1B302476878F60E_label_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_952C007866761511D1B302476878F60E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restricted Cash and Cash Equivalents, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_952C007866761511D1B302476878F60E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_952C007866761511D1B302476878F60E" xlink:to="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_952C007866761511D1B302476878F60E" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountsReceivableNetAbstract_B6853BBE39E7FEE76F5E024768783C82_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetAbstract_B6853BBE39E7FEE76F5E024768783C82" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts Receivable </link:label>
<link:label id="lab_us-gaap_AccountsReceivableNetAbstract_B6853BBE39E7FEE76F5E024768783C82_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetAbstract_B6853BBE39E7FEE76F5E024768783C82" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Receivable, Net [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsReceivableNetAbstract" xlink:label="loc_us-gaap_AccountsReceivableNetAbstract_B6853BBE39E7FEE76F5E024768783C82" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNetAbstract_B6853BBE39E7FEE76F5E024768783C82" xlink:to="lab_us-gaap_AccountsReceivableNetAbstract_B6853BBE39E7FEE76F5E024768783C82" xlink:type="arc"/>
<link:label id="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_FDB77BE98C725B17D5E2024768783D4D_terseLabel_en-US" xlink:label="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_FDB77BE98C725B17D5E2024768783D4D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> net allowance for doubtful accounts </link:label>
<link:label id="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_FDB77BE98C725B17D5E2024768783D4D_label_en-US" xlink:label="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_FDB77BE98C725B17D5E2024768783D4D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Allowance for Doubtful Accounts Receivable, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_FDB77BE98C725B17D5E2024768783D4D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_FDB77BE98C725B17D5E2024768783D4D" xlink:to="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_FDB77BE98C725B17D5E2024768783D4D" xlink:type="arc"/>
<link:label id="lab_msc_DeficitAbstract_48A461C809DE0DCDDF52024768780140_terseLabel_en-US" xlink:label="lab_msc_DeficitAbstract_48A461C809DE0DCDDF52024768780140" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deficit: </link:label>
<link:label id="lab_msc_DeficitAbstract_48A461C809DE0DCDDF52024768780140_label_en-US" xlink:label="lab_msc_DeficitAbstract_48A461C809DE0DCDDF52024768780140" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deficit [Abstract] </link:label>
<link:label id="lab_msc_DeficitAbstract_48A461C809DE0DCDDF52024768780140_documentation_en-US" xlink:label="lab_msc_DeficitAbstract_48A461C809DE0DCDDF52024768780140" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Deficit [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_DeficitAbstract" xlink:label="loc_msc_DeficitAbstract_48A461C809DE0DCDDF52024768780140" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_DeficitAbstract_48A461C809DE0DCDDF52024768780140" xlink:to="lab_msc_DeficitAbstract_48A461C809DE0DCDDF52024768780140" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_1DEDE4EF6782B6C50C540247687897E6_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_1DEDE4EF6782B6C50C540247687897E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common Stock </link:label>
<link:label id="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_1DEDE4EF6782B6C50C540247687897E6_label_en-US" xlink:label="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_1DEDE4EF6782B6C50C540247687897E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract" xlink:label="loc_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_1DEDE4EF6782B6C50C540247687897E6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_1DEDE4EF6782B6C50C540247687897E6" xlink:to="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_1DEDE4EF6782B6C50C540247687897E6" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_4872904189EC3D6113EB024768787E2C_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_4872904189EC3D6113EB024768787E2C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> par value </link:label>
<link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_4872904189EC3D6113EB024768787E2C_label_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_4872904189EC3D6113EB024768787E2C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Par or Stated Value Per Share </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_4872904189EC3D6113EB024768787E2C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockParOrStatedValuePerShare_4872904189EC3D6113EB024768787E2C" xlink:to="lab_us-gaap_CommonStockParOrStatedValuePerShare_4872904189EC3D6113EB024768787E2C" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockSharesAuthorized_AEC8391A9C85CC62EE7302476878AD84_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_AEC8391A9C85CC62EE7302476878AD84" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> shares authorized </link:label>
<link:label id="lab_us-gaap_CommonStockSharesAuthorized_AEC8391A9C85CC62EE7302476878AD84_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_AEC8391A9C85CC62EE7302476878AD84" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Shares Authorized </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_AEC8391A9C85CC62EE7302476878AD84" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesAuthorized_AEC8391A9C85CC62EE7302476878AD84" xlink:to="lab_us-gaap_CommonStockSharesAuthorized_AEC8391A9C85CC62EE7302476878AD84" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockSharesIssued_C115D22BD6A25A8AE8690247687829A7_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_C115D22BD6A25A8AE8690247687829A7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> shares issued </link:label>
<link:label id="lab_us-gaap_CommonStockSharesIssued_C115D22BD6A25A8AE8690247687829A7_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_C115D22BD6A25A8AE8690247687829A7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Shares, Issued </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_C115D22BD6A25A8AE8690247687829A7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesIssued_C115D22BD6A25A8AE8690247687829A7" xlink:to="lab_us-gaap_CommonStockSharesIssued_C115D22BD6A25A8AE8690247687829A7" xlink:type="arc"/>
<link:label id="lab_us-gaap_SharesOutstanding_E0B85469EFA040ADD331024768782BFD_terseLabel_en-US" xlink:label="lab_us-gaap_SharesOutstanding_E0B85469EFA040ADD331024768782BFD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> shares outstanding </link:label>
<link:label id="lab_us-gaap_SharesOutstanding_E0B85469EFA040ADD331024768782BFD_label_en-US" xlink:label="lab_us-gaap_SharesOutstanding_E0B85469EFA040ADD331024768782BFD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Shares, Outstanding </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharesOutstanding" xlink:label="loc_us-gaap_SharesOutstanding_E0B85469EFA040ADD331024768782BFD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharesOutstanding_E0B85469EFA040ADD331024768782BFD" xlink:to="lab_us-gaap_SharesOutstanding_E0B85469EFA040ADD331024768782BFD" xlink:type="arc"/>
<link:label id="lab_us-gaap_TreasuryStockShares_DE8F5950BCAB4F99A454024768781C31_terseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockShares_DE8F5950BCAB4F99A454024768781C31" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Treasury stock, shares </link:label>
<link:label id="lab_us-gaap_TreasuryStockShares_DE8F5950BCAB4F99A454024768781C31_label_en-US" xlink:label="lab_us-gaap_TreasuryStockShares_DE8F5950BCAB4F99A454024768781C31" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Treasury Stock, Shares </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TreasuryStockShares" xlink:label="loc_us-gaap_TreasuryStockShares_DE8F5950BCAB4F99A454024768781C31" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TreasuryStockShares_DE8F5950BCAB4F99A454024768781C31" xlink:to="lab_us-gaap_TreasuryStockShares_DE8F5950BCAB4F99A454024768781C31" xlink:type="arc"/>
<link:label id="lab_us-gaap_SegmentReportingAbstract_0D99ED8BD659839AAD7B21140591A039_label_en-US" xlink:label="lab_us-gaap_SegmentReportingAbstract_0D99ED8BD659839AAD7B21140591A039" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment Reporting [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_0D99ED8BD659839AAD7B21140591A039" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingAbstract_0D99ED8BD659839AAD7B21140591A039" xlink:to="lab_us-gaap_SegmentReportingAbstract_0D99ED8BD659839AAD7B21140591A039" xlink:type="arc"/>
<link:label id="lab_msc_EpcdMember_8DA349C9DC7C44D57936211405917C02_terseLabel_en-US" xlink:label="lab_msc_EpcdMember_8DA349C9DC7C44D57936211405917C02" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Epoxy, Phenolic and Coating Resins [Member] </link:label>
<link:label id="lab_msc_EpcdMember_8DA349C9DC7C44D57936211405917C02_label_en-US" xlink:label="lab_msc_EpcdMember_8DA349C9DC7C44D57936211405917C02" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> EPCD [Member] </link:label>
<link:label id="lab_msc_EpcdMember_8DA349C9DC7C44D57936211405917C02_documentation_en-US" xlink:label="lab_msc_EpcdMember_8DA349C9DC7C44D57936211405917C02" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> EPCD [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_EpcdMember" xlink:label="loc_msc_EpcdMember_8DA349C9DC7C44D57936211405917C02" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_EpcdMember_8DA349C9DC7C44D57936211405917C02" xlink:to="lab_msc_EpcdMember_8DA349C9DC7C44D57936211405917C02" xlink:type="arc"/>
<link:label id="lab_msc_FpdMember_6896CF4EE0DF25B42024211405911882_terseLabel_en-US" xlink:label="lab_msc_FpdMember_6896CF4EE0DF25B42024211405911882" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Forest Products Resins [Member] </link:label>
<link:label id="lab_msc_FpdMember_6896CF4EE0DF25B42024211405911882_label_en-US" xlink:label="lab_msc_FpdMember_6896CF4EE0DF25B42024211405911882" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> FPD [Member] </link:label>
<link:label id="lab_msc_FpdMember_6896CF4EE0DF25B42024211405911882_documentation_en-US" xlink:label="lab_msc_FpdMember_6896CF4EE0DF25B42024211405911882" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> FPD [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_FpdMember" xlink:label="loc_msc_FpdMember_6896CF4EE0DF25B42024211405911882" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_FpdMember_6896CF4EE0DF25B42024211405911882" xlink:to="lab_msc_FpdMember_6896CF4EE0DF25B42024211405911882" xlink:type="arc"/>
<link:label id="lab_us-gaap_CorporateAndOtherMember_526DDAE832C0B8AC6E4F21140591A4FA_terseLabel_en-US" xlink:label="lab_us-gaap_CorporateAndOtherMember_526DDAE832C0B8AC6E4F21140591A4FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Corporate and Other [Member] </link:label>
<link:label id="lab_us-gaap_CorporateAndOtherMember_526DDAE832C0B8AC6E4F21140591A4FA_label_en-US" xlink:label="lab_us-gaap_CorporateAndOtherMember_526DDAE832C0B8AC6E4F21140591A4FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate and Other [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CorporateAndOtherMember" xlink:label="loc_us-gaap_CorporateAndOtherMember_526DDAE832C0B8AC6E4F21140591A4FA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CorporateAndOtherMember_526DDAE832C0B8AC6E4F21140591A4FA" xlink:to="lab_us-gaap_CorporateAndOtherMember_526DDAE832C0B8AC6E4F21140591A4FA" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetIncomeLoss_F7CB1890DB69605A230121140591C4BE_netLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_F7CB1890DB69605A230121140591C4BE" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US"> Net loss </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_F7CB1890DB69605A230121140591C4BE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_F7CB1890DB69605A230121140591C4BE" xlink:to="lab_us-gaap_NetIncomeLoss_F7CB1890DB69605A230121140591C4BE" xlink:type="arc"/>
<link:label id="lab_us-gaap_InterestExpense_7763F0DCC3E70BA6776A21140591D0E9_terseLabel_en-US" xlink:label="lab_us-gaap_InterestExpense_7763F0DCC3E70BA6776A21140591D0E9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest expense, net </link:label>
<link:label id="lab_us-gaap_InterestExpense_7763F0DCC3E70BA6776A21140591D0E9_label_en-US" xlink:label="lab_us-gaap_InterestExpense_7763F0DCC3E70BA6776A21140591D0E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_7763F0DCC3E70BA6776A21140591D0E9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestExpense_7763F0DCC3E70BA6776A21140591D0E9" xlink:to="lab_us-gaap_InterestExpense_7763F0DCC3E70BA6776A21140591D0E9" xlink:type="arc"/>
<link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_8DBD97BDEE2E6530EC6821140591158A_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_8DBD97BDEE2E6530EC6821140591158A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Depreciation and amortization </link:label>
<link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_8DBD97BDEE2E6530EC6821140591158A_label_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_8DBD97BDEE2E6530EC6821140591158A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Depreciation, Depletion and Amortization </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_8DBD97BDEE2E6530EC6821140591158A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DepreciationDepletionAndAmortization_8DBD97BDEE2E6530EC6821140591158A" xlink:to="lab_us-gaap_DepreciationDepletionAndAmortization_8DBD97BDEE2E6530EC6821140591158A" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestructuringReserveAcceleratedDepreciation_3BA79689496906C9B225211405917533_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringReserveAcceleratedDepreciation_3BA79689496906C9B225211405917533" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accelerated depreciation </link:label>
<link:label id="lab_us-gaap_RestructuringReserveAcceleratedDepreciation_3BA79689496906C9B225211405917533_label_en-US" xlink:label="lab_us-gaap_RestructuringReserveAcceleratedDepreciation_3BA79689496906C9B225211405917533" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring and Related Cost, Accelerated Depreciation </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringReserveAcceleratedDepreciation" xlink:label="loc_us-gaap_RestructuringReserveAcceleratedDepreciation_3BA79689496906C9B225211405917533" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringReserveAcceleratedDepreciation_3BA79689496906C9B225211405917533" xlink:to="lab_us-gaap_RestructuringReserveAcceleratedDepreciation_3BA79689496906C9B225211405917533" xlink:type="arc"/>
<link:label id="lab_msc_EarningsbeforeInterestTaxesDepreciationandAmortization_81101029B33321BA6D5C21140591DA68_terseLabel_en-US" xlink:label="lab_msc_EarningsbeforeInterestTaxesDepreciationandAmortization_81101029B33321BA6D5C21140591DA68" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Earnings before Interest, Taxes, Depreciation, and Amortization </link:label>
<link:label id="lab_msc_EarningsbeforeInterestTaxesDepreciationandAmortization_81101029B33321BA6D5C21140591DA68_label_en-US" xlink:label="lab_msc_EarningsbeforeInterestTaxesDepreciationandAmortization_81101029B33321BA6D5C21140591DA68" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings before Interest, Taxes, Depreciation, and Amortization </link:label>
<link:label id="lab_msc_EarningsbeforeInterestTaxesDepreciationandAmortization_81101029B33321BA6D5C21140591DA68_documentation_en-US" xlink:label="lab_msc_EarningsbeforeInterestTaxesDepreciationandAmortization_81101029B33321BA6D5C21140591DA68" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Earnings before Interest, Taxes, Depreciation, and Amortization </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_EarningsbeforeInterestTaxesDepreciationandAmortization" xlink:label="loc_msc_EarningsbeforeInterestTaxesDepreciationandAmortization_81101029B33321BA6D5C21140591DA68" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_EarningsbeforeInterestTaxesDepreciationandAmortization_81101029B33321BA6D5C21140591DA68" xlink:to="lab_msc_EarningsbeforeInterestTaxesDepreciationandAmortization_81101029B33321BA6D5C21140591DA68" xlink:type="arc"/>
<link:label id="lab_us-gaap_GoodwillImpairmentLoss_45D77984396EB89F3F24211405910BA4_negatedLabel_en-US" xlink:label="lab_us-gaap_GoodwillImpairmentLoss_45D77984396EB89F3F24211405910BA4" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Asset impairments </link:label>
<link:label id="lab_us-gaap_GoodwillImpairmentLoss_45D77984396EB89F3F24211405910BA4_label_en-US" xlink:label="lab_us-gaap_GoodwillImpairmentLoss_45D77984396EB89F3F24211405910BA4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill, Impairment Loss </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GoodwillImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_45D77984396EB89F3F24211405910BA4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillImpairmentLoss_45D77984396EB89F3F24211405910BA4" xlink:to="lab_us-gaap_GoodwillImpairmentLoss_45D77984396EB89F3F24211405910BA4" xlink:type="arc"/>
<link:label id="lab_msc_UnrealizedandrealizedforeigncurrencylossesexcludedfromEBITDA_63E81726076A92FE5A90211405912C06_terseLabel_en-US" xlink:label="lab_msc_UnrealizedandrealizedforeigncurrencylossesexcludedfromEBITDA_63E81726076A92FE5A90211405912C06" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Realized and unrealized foreign currency losses (gains) </link:label>
<link:label id="lab_msc_UnrealizedandrealizedforeigncurrencylossesexcludedfromEBITDA_63E81726076A92FE5A90211405912C06_label_en-US" xlink:label="lab_msc_UnrealizedandrealizedforeigncurrencylossesexcludedfromEBITDA_63E81726076A92FE5A90211405912C06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Unrealized and realized foreign currency losses excluded from EBITDA </link:label>
<link:label id="lab_msc_UnrealizedandrealizedforeigncurrencylossesexcludedfromEBITDA_63E81726076A92FE5A90211405912C06_documentation_en-US" xlink:label="lab_msc_UnrealizedandrealizedforeigncurrencylossesexcludedfromEBITDA_63E81726076A92FE5A90211405912C06" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Unrealized and realized foreign currency losses excluded from EBITDA </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_UnrealizedandrealizedforeigncurrencylossesexcludedfromEBITDA" xlink:label="loc_msc_UnrealizedandrealizedforeigncurrencylossesexcludedfromEBITDA_63E81726076A92FE5A90211405912C06" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_UnrealizedandrealizedforeigncurrencylossesexcludedfromEBITDA_63E81726076A92FE5A90211405912C06" xlink:to="lab_msc_UnrealizedandrealizedforeigncurrencylossesexcludedfromEBITDA_63E81726076A92FE5A90211405912C06" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherExpenses_D80C4ACA37D87C27F62E2114059165E8_terseLabel_en-US" xlink:label="lab_us-gaap_OtherExpenses_D80C4ACA37D87C27F62E2114059165E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other </link:label>
<link:label id="lab_us-gaap_OtherExpenses_D80C4ACA37D87C27F62E2114059165E8_label_en-US" xlink:label="lab_us-gaap_OtherExpenses_D80C4ACA37D87C27F62E2114059165E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Expenses </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherExpenses" xlink:label="loc_us-gaap_OtherExpenses_D80C4ACA37D87C27F62E2114059165E8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherExpenses_D80C4ACA37D87C27F62E2114059165E8" xlink:to="lab_us-gaap_OtherExpenses_D80C4ACA37D87C27F62E2114059165E8" xlink:type="arc"/>
<link:label id="lab_msc_TotalAdjustments_F168A433A9D3F23F93BB21140591C346_totalLabel_en-US" xlink:label="lab_msc_TotalAdjustments_F168A433A9D3F23F93BB21140591C346" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total adjustments </link:label>
<link:label id="lab_msc_TotalAdjustments_F168A433A9D3F23F93BB21140591C346_label_en-US" xlink:label="lab_msc_TotalAdjustments_F168A433A9D3F23F93BB21140591C346" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Total adjustments </link:label>
<link:label id="lab_msc_TotalAdjustments_F168A433A9D3F23F93BB21140591C346_documentation_en-US" xlink:label="lab_msc_TotalAdjustments_F168A433A9D3F23F93BB21140591C346" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Total adjustments </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_TotalAdjustments" xlink:label="loc_msc_TotalAdjustments_F168A433A9D3F23F93BB21140591C346" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_TotalAdjustments_F168A433A9D3F23F93BB21140591C346" xlink:to="lab_msc_TotalAdjustments_F168A433A9D3F23F93BB21140591C346" xlink:type="arc"/>
<link:label id="lab_msc_SegmentEbitda_40188EBEDAD5C1378D0721140591C912_terseLabel_en-US" xlink:label="lab_msc_SegmentEbitda_40188EBEDAD5C1378D0721140591C912" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segment EBITDA [Line Items] </link:label>
<link:label id="lab_msc_SegmentEbitda_40188EBEDAD5C1378D0721140591C912_label_en-US" xlink:label="lab_msc_SegmentEbitda_40188EBEDAD5C1378D0721140591C912" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment EBITDA </link:label>
<link:label id="lab_msc_SegmentEbitda_40188EBEDAD5C1378D0721140591C912_documentation_en-US" xlink:label="lab_msc_SegmentEbitda_40188EBEDAD5C1378D0721140591C912" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Segment EBITDA </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_SegmentEbitda" xlink:label="loc_msc_SegmentEbitda_40188EBEDAD5C1378D0721140591C912" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SegmentEbitda_40188EBEDAD5C1378D0721140591C912" xlink:to="lab_msc_SegmentEbitda_40188EBEDAD5C1378D0721140591C912" xlink:type="arc"/>
<link:label id="lab_us-gaap_MergersAcquisitionsAndDispositionsDisclosuresTextBlock_45989F10CE54A5FE4B8316FCEA415F9A_terseLabel_en-US" xlink:label="lab_us-gaap_MergersAcquisitionsAndDispositionsDisclosuresTextBlock_45989F10CE54A5FE4B8316FCEA415F9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Mergers, Acquisitions and Dispositions Disclosures [Text Block] </link:label>
<link:label id="lab_us-gaap_MergersAcquisitionsAndDispositionsDisclosuresTextBlock_45989F10CE54A5FE4B8316FCEA415F9A_label_en-US" xlink:label="lab_us-gaap_MergersAcquisitionsAndDispositionsDisclosuresTextBlock_45989F10CE54A5FE4B8316FCEA415F9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Mergers, Acquisitions and Dispositions Disclosures [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MergersAcquisitionsAndDispositionsDisclosuresTextBlock" xlink:label="loc_us-gaap_MergersAcquisitionsAndDispositionsDisclosuresTextBlock_45989F10CE54A5FE4B8316FCEA415F9A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MergersAcquisitionsAndDispositionsDisclosuresTextBlock_45989F10CE54A5FE4B8316FCEA415F9A" xlink:to="lab_us-gaap_MergersAcquisitionsAndDispositionsDisclosuresTextBlock_45989F10CE54A5FE4B8316FCEA415F9A" xlink:type="arc"/>
<link:label id="lab_us-gaap_EnvironmentalRemediationObligationsAbstract_6A1609706397CE926F2416F549CA5E40_label_en-US" xlink:label="lab_us-gaap_EnvironmentalRemediationObligationsAbstract_6A1609706397CE926F2416F549CA5E40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Environmental Remediation Obligations [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EnvironmentalRemediationObligationsAbstract" xlink:label="loc_us-gaap_EnvironmentalRemediationObligationsAbstract_6A1609706397CE926F2416F549CA5E40" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EnvironmentalRemediationObligationsAbstract_6A1609706397CE926F2416F549CA5E40" xlink:to="lab_us-gaap_EnvironmentalRemediationObligationsAbstract_6A1609706397CE926F2416F549CA5E40" xlink:type="arc"/>
<link:label id="lab_us-gaap_SiteContingencyTable_B17095C8F9AAC43D2F1F16F549CA5099_terseLabel_en-US" xlink:label="lab_us-gaap_SiteContingencyTable_B17095C8F9AAC43D2F1F16F549CA5099" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Site Contingency [Table] </link:label>
<link:label id="lab_us-gaap_SiteContingencyTable_B17095C8F9AAC43D2F1F16F549CA5099_label_en-US" xlink:label="lab_us-gaap_SiteContingencyTable_B17095C8F9AAC43D2F1F16F549CA5099" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Site Contingency [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SiteContingencyTable" xlink:label="loc_us-gaap_SiteContingencyTable_B17095C8F9AAC43D2F1F16F549CA5099" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SiteContingencyTable_B17095C8F9AAC43D2F1F16F549CA5099" xlink:to="lab_us-gaap_SiteContingencyTable_B17095C8F9AAC43D2F1F16F549CA5099" xlink:type="arc"/>
<link:label id="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteAxis_7215456C6370461F77E016F6BAB42DEE_terseLabel_en-US" xlink:label="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteAxis_7215456C6370461F77E016F6BAB42DEE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Environmental Remediation and Restoration Liabilities by Site [Axis] </link:label>
<link:label id="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteAxis_7215456C6370461F77E016F6BAB42DEE_label_en-US" xlink:label="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteAxis_7215456C6370461F77E016F6BAB42DEE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Environmental Remediation and Restoration Liabilities by Site [Axis] </link:label>
<link:label id="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteAxis_7215456C6370461F77E016F6BAB42DEE_documentation_en-US" xlink:label="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteAxis_7215456C6370461F77E016F6BAB42DEE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Environmental Remediation and Restoration Liabilities by Sit [Axis] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteAxis" xlink:label="loc_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteAxis_7215456C6370461F77E016F6BAB42DEE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteAxis_7215456C6370461F77E016F6BAB42DEE" xlink:to="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteAxis_7215456C6370461F77E016F6BAB42DEE" xlink:type="arc"/>
<link:label id="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain_1969666CF987CEB21E9016F6BD152C56_terseLabel_en-US" xlink:label="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain_1969666CF987CEB21E9016F6BD152C56" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Environmental Remediation and Restoration Liabilities by Site [Domain] </link:label>
<link:label id="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain_1969666CF987CEB21E9016F6BD152C56_label_en-US" xlink:label="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain_1969666CF987CEB21E9016F6BD152C56" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Environmental Remediation and Restoration Liabilities by Site [Domain] </link:label>
<link:label id="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain_1969666CF987CEB21E9016F6BD152C56_documentation_en-US" xlink:label="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain_1969666CF987CEB21E9016F6BD152C56" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Environmental Remediation and Restoration Liabilities by Site [Domain] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain" xlink:label="loc_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain_1969666CF987CEB21E9016F6BD152C56" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain_1969666CF987CEB21E9016F6BD152C56" xlink:to="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain_1969666CF987CEB21E9016F6BD152C56" xlink:type="arc"/>
<link:label id="lab_us-gaap_MinimumMember_753FF3F7032DD687ED1B16F549CAF989_terseLabel_en-US" xlink:label="lab_us-gaap_MinimumMember_753FF3F7032DD687ED1B16F549CAF989" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Minimum [Member] </link:label>
<link:label id="lab_us-gaap_MinimumMember_753FF3F7032DD687ED1B16F549CAF989_label_en-US" xlink:label="lab_us-gaap_MinimumMember_753FF3F7032DD687ED1B16F549CAF989" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Minimum [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_753FF3F7032DD687ED1B16F549CAF989" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MinimumMember_753FF3F7032DD687ED1B16F549CAF989" xlink:to="lab_us-gaap_MinimumMember_753FF3F7032DD687ED1B16F549CAF989" xlink:type="arc"/>
<link:label id="lab_us-gaap_EnvironmentalRemediationSiteAxis_B1FFC5D412D237721E4216F549CAA887_terseLabel_en-US" xlink:label="lab_us-gaap_EnvironmentalRemediationSiteAxis_B1FFC5D412D237721E4216F549CAA887" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Environmental Remediation and Restoration Liabilities by Site [Axis] </link:label>
<link:label id="lab_us-gaap_EnvironmentalRemediationSiteAxis_B1FFC5D412D237721E4216F549CAA887_label_en-US" xlink:label="lab_us-gaap_EnvironmentalRemediationSiteAxis_B1FFC5D412D237721E4216F549CAA887" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Environmental Remediation Site [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EnvironmentalRemediationSiteAxis" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteAxis_B1FFC5D412D237721E4216F549CAA887" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteAxis_B1FFC5D412D237721E4216F549CAA887" xlink:to="lab_us-gaap_EnvironmentalRemediationSiteAxis_B1FFC5D412D237721E4216F549CAA887" xlink:type="arc"/>
<link:label id="lab_us-gaap_EnvironmentalRemediationSiteDomain_0AD241CEE6A614289D3616F549CA2B62_terseLabel_en-US" xlink:label="lab_us-gaap_EnvironmentalRemediationSiteDomain_0AD241CEE6A614289D3616F549CA2B62" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Environmental Remediation and Restoration Liabilities by Site [Domain] </link:label>
<link:label id="lab_us-gaap_EnvironmentalRemediationSiteDomain_0AD241CEE6A614289D3616F549CA2B62_label_en-US" xlink:label="lab_us-gaap_EnvironmentalRemediationSiteDomain_0AD241CEE6A614289D3616F549CA2B62" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Environmental Remediation Site [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EnvironmentalRemediationSiteDomain" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteDomain_0AD241CEE6A614289D3616F549CA2B62" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EnvironmentalRemediationSiteDomain_0AD241CEE6A614289D3616F549CA2B62" xlink:to="lab_us-gaap_EnvironmentalRemediationSiteDomain_0AD241CEE6A614289D3616F549CA2B62" xlink:type="arc"/>
<link:label id="lab_msc_EnvironmentalInstitutionOfParanaIapMember_BDF925816E57233D7F7416F549CADD1F_terseLabel_en-US" xlink:label="lab_msc_EnvironmentalInstitutionOfParanaIapMember_BDF925816E57233D7F7416F549CADD1F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Environmental Institution of Parana IAP [Member] </link:label>
<link:label id="lab_msc_EnvironmentalInstitutionOfParanaIapMember_BDF925816E57233D7F7416F549CADD1F_label_en-US" xlink:label="lab_msc_EnvironmentalInstitutionOfParanaIapMember_BDF925816E57233D7F7416F549CADD1F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Environmental Institution of Parana IAP [Member] </link:label>
<link:label id="lab_msc_EnvironmentalInstitutionOfParanaIapMember_BDF925816E57233D7F7416F549CADD1F_documentation_en-US" xlink:label="lab_msc_EnvironmentalInstitutionOfParanaIapMember_BDF925816E57233D7F7416F549CADD1F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Environmental Institution of Parana IAP [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_EnvironmentalInstitutionOfParanaIapMember" xlink:label="loc_msc_EnvironmentalInstitutionOfParanaIapMember_BDF925816E57233D7F7416F549CADD1F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_EnvironmentalInstitutionOfParanaIapMember_BDF925816E57233D7F7416F549CADD1F" xlink:to="lab_msc_EnvironmentalInstitutionOfParanaIapMember_BDF925816E57233D7F7416F549CADD1F" xlink:type="arc"/>
<link:label id="lab_msc_GeismarLaMember_88C7800FD3123ECC3D9E16F549CA3BB5_terseLabel_en-US" xlink:label="lab_msc_GeismarLaMember_88C7800FD3123ECC3D9E16F549CA3BB5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Geismar, LA [Member] </link:label>
<link:label id="lab_msc_GeismarLaMember_88C7800FD3123ECC3D9E16F549CA3BB5_label_en-US" xlink:label="lab_msc_GeismarLaMember_88C7800FD3123ECC3D9E16F549CA3BB5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Geismar, LA [Member] </link:label>
<link:label id="lab_msc_GeismarLaMember_88C7800FD3123ECC3D9E16F549CA3BB5_documentation_en-US" xlink:label="lab_msc_GeismarLaMember_88C7800FD3123ECC3D9E16F549CA3BB5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Geismar, LA [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_GeismarLaMember" xlink:label="loc_msc_GeismarLaMember_88C7800FD3123ECC3D9E16F549CA3BB5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_GeismarLaMember_88C7800FD3123ECC3D9E16F549CA3BB5" xlink:to="lab_msc_GeismarLaMember_88C7800FD3123ECC3D9E16F549CA3BB5" xlink:type="arc"/>
<link:label id="lab_msc_SuperfundAndOffsiteLandfillsLessThan1Member_D0C854322317447839A416F549CAA254_terseLabel_en-US" xlink:label="lab_msc_SuperfundAndOffsiteLandfillsLessThan1Member_D0C854322317447839A416F549CAA254" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Superfund and Offsite Landfills - allocated share: Less than 1% [Member] </link:label>
<link:label id="lab_msc_SuperfundAndOffsiteLandfillsLessThan1Member_D0C854322317447839A416F549CAA254_label_en-US" xlink:label="lab_msc_SuperfundAndOffsiteLandfillsLessThan1Member_D0C854322317447839A416F549CAA254" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Superfund and Offsite Landfills - Less than 1% [Member] </link:label>
<link:label id="lab_msc_SuperfundAndOffsiteLandfillsLessThan1Member_D0C854322317447839A416F549CAA254_documentation_en-US" xlink:label="lab_msc_SuperfundAndOffsiteLandfillsLessThan1Member_D0C854322317447839A416F549CAA254" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Superfund and Offsite Landfills - Less than 1% [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_SuperfundAndOffsiteLandfillsLessThan1Member" xlink:label="loc_msc_SuperfundAndOffsiteLandfillsLessThan1Member_D0C854322317447839A416F549CAA254" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SuperfundAndOffsiteLandfillsLessThan1Member_D0C854322317447839A416F549CAA254" xlink:to="lab_msc_SuperfundAndOffsiteLandfillsLessThan1Member_D0C854322317447839A416F549CAA254" xlink:type="arc"/>
<link:label id="lab_msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member_C19F755CC62CAB4955E116F549CAF54C_terseLabel_en-US" xlink:label="lab_msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member_C19F755CC62CAB4955E116F549CAF54C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Superfund and Offsite Landfills - allocated share: Equal to or Greater than 1% [Member] </link:label>
<link:label id="lab_msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member_C19F755CC62CAB4955E116F549CAF54C_label_en-US" xlink:label="lab_msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member_C19F755CC62CAB4955E116F549CAF54C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Superfund and Offsite Landfills - Equal to or Greater than 1% [Member] </link:label>
<link:label id="lab_msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member_C19F755CC62CAB4955E116F549CAF54C_documentation_en-US" xlink:label="lab_msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member_C19F755CC62CAB4955E116F549CAF54C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Superfund and Offsite Landfills - Equal to or Greater than 1% [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member" xlink:label="loc_msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member_C19F755CC62CAB4955E116F549CAF54C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member_C19F755CC62CAB4955E116F549CAF54C" xlink:to="lab_msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member_C19F755CC62CAB4955E116F549CAF54C" xlink:type="arc"/>
<link:label id="lab_msc_CurrentlyOwnedMember_C5088DFDAA15BC61250C16F549CA77DF_terseLabel_en-US" xlink:label="lab_msc_CurrentlyOwnedMember_C5088DFDAA15BC61250C16F549CA77DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Currently-Owned [Member] </link:label>
<link:label id="lab_msc_CurrentlyOwnedMember_C5088DFDAA15BC61250C16F549CA77DF_label_en-US" xlink:label="lab_msc_CurrentlyOwnedMember_C5088DFDAA15BC61250C16F549CA77DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Currently-Owned [Member] </link:label>
<link:label id="lab_msc_CurrentlyOwnedMember_C5088DFDAA15BC61250C16F549CA77DF_documentation_en-US" xlink:label="lab_msc_CurrentlyOwnedMember_C5088DFDAA15BC61250C16F549CA77DF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Currently-Owned [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_CurrentlyOwnedMember" xlink:label="loc_msc_CurrentlyOwnedMember_C5088DFDAA15BC61250C16F549CA77DF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_CurrentlyOwnedMember_C5088DFDAA15BC61250C16F549CA77DF" xlink:to="lab_msc_CurrentlyOwnedMember_C5088DFDAA15BC61250C16F549CA77DF" xlink:type="arc"/>
<link:label id="lab_msc_FormerlyOwnedRemediationMember_1184F2F088F5211EF54116F549CAC273_terseLabel_en-US" xlink:label="lab_msc_FormerlyOwnedRemediationMember_1184F2F088F5211EF54116F549CAC273" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Formerly-Owned - Remediation [Member] </link:label>
<link:label id="lab_msc_FormerlyOwnedRemediationMember_1184F2F088F5211EF54116F549CAC273_label_en-US" xlink:label="lab_msc_FormerlyOwnedRemediationMember_1184F2F088F5211EF54116F549CAC273" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Formerly-Owned - Remediation [Member] </link:label>
<link:label id="lab_msc_FormerlyOwnedRemediationMember_1184F2F088F5211EF54116F549CAC273_documentation_en-US" xlink:label="lab_msc_FormerlyOwnedRemediationMember_1184F2F088F5211EF54116F549CAC273" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Formerly-Owned - Remediation [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_FormerlyOwnedRemediationMember" xlink:label="loc_msc_FormerlyOwnedRemediationMember_1184F2F088F5211EF54116F549CAC273" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_FormerlyOwnedRemediationMember_1184F2F088F5211EF54116F549CAC273" xlink:to="lab_msc_FormerlyOwnedRemediationMember_1184F2F088F5211EF54116F549CAC273" xlink:type="arc"/>
<link:label id="lab_msc_FormerlyOwnedMonitoringOnlyMember_7C76C37A67D340F6FF5116F549CA9F03_terseLabel_en-US" xlink:label="lab_msc_FormerlyOwnedMonitoringOnlyMember_7C76C37A67D340F6FF5116F549CA9F03" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Formerly-Owned - Monitoring Only [Member] </link:label>
<link:label id="lab_msc_FormerlyOwnedMonitoringOnlyMember_7C76C37A67D340F6FF5116F549CA9F03_label_en-US" xlink:label="lab_msc_FormerlyOwnedMonitoringOnlyMember_7C76C37A67D340F6FF5116F549CA9F03" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Formerly-Owned - Monitoring Only [Member] </link:label>
<link:label id="lab_msc_FormerlyOwnedMonitoringOnlyMember_7C76C37A67D340F6FF5116F549CA9F03_documentation_en-US" xlink:label="lab_msc_FormerlyOwnedMonitoringOnlyMember_7C76C37A67D340F6FF5116F549CA9F03" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Formerly-Owned - Monitoring Only [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_FormerlyOwnedMonitoringOnlyMember" xlink:label="loc_msc_FormerlyOwnedMonitoringOnlyMember_7C76C37A67D340F6FF5116F549CA9F03" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_FormerlyOwnedMonitoringOnlyMember_7C76C37A67D340F6FF5116F549CA9F03" xlink:to="lab_msc_FormerlyOwnedMonitoringOnlyMember_7C76C37A67D340F6FF5116F549CA9F03" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccrualForEnvironmentalLossContingencies_8D950B32AE8E4123028816F549CA3072_terseLabel_en-US" xlink:label="lab_us-gaap_AccrualForEnvironmentalLossContingencies_8D950B32AE8E4123028816F549CA3072" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrual for Environmental Loss Contingencies </link:label>
<link:label id="lab_us-gaap_AccrualForEnvironmentalLossContingencies_8D950B32AE8E4123028816F549CA3072_label_en-US" xlink:label="lab_us-gaap_AccrualForEnvironmentalLossContingencies_8D950B32AE8E4123028816F549CA3072" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrual for Environmental Loss Contingencies </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingencies" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingencies_8D950B32AE8E4123028816F549CA3072" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccrualForEnvironmentalLossContingencies_8D950B32AE8E4123028816F549CA3072" xlink:to="lab_us-gaap_AccrualForEnvironmentalLossContingencies_8D950B32AE8E4123028816F549CA3072" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_B77683357FD53EFFD70D16F549CA55EC_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_B77683357FD53EFFD70D16F549CA55EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued Environmental Loss Contingencies, Current </link:label>
<link:label id="lab_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_B77683357FD53EFFD70D16F549CA55EC_label_en-US" xlink:label="lab_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_B77683357FD53EFFD70D16F549CA55EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrued Environmental Loss Contingencies, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccruedEnvironmentalLossContingenciesCurrent" xlink:label="loc_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_B77683357FD53EFFD70D16F549CA55EC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_B77683357FD53EFFD70D16F549CA55EC" xlink:to="lab_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_B77683357FD53EFFD70D16F549CA55EC" xlink:type="arc"/>
<link:label id="lab_msc_DiscountRateAssumedToRecordAtPresentValue_FF98200C00F9332BD1FE16F549CAC16A_terseLabel_en-US" xlink:label="lab_msc_DiscountRateAssumedToRecordAtPresentValue_FF98200C00F9332BD1FE16F549CAC16A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Discount rate assumed to record at present value </link:label>
<link:label id="lab_msc_DiscountRateAssumedToRecordAtPresentValue_FF98200C00F9332BD1FE16F549CAC16A_label_en-US" xlink:label="lab_msc_DiscountRateAssumedToRecordAtPresentValue_FF98200C00F9332BD1FE16F549CAC16A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Discount rate assumed to record at present value </link:label>
<link:label id="lab_msc_DiscountRateAssumedToRecordAtPresentValue_FF98200C00F9332BD1FE16F549CAC16A_documentation_en-US" xlink:label="lab_msc_DiscountRateAssumedToRecordAtPresentValue_FF98200C00F9332BD1FE16F549CAC16A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Discount rate assumed to record at present value </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_DiscountRateAssumedToRecordAtPresentValue" xlink:label="loc_msc_DiscountRateAssumedToRecordAtPresentValue_FF98200C00F9332BD1FE16F549CAC16A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_DiscountRateAssumedToRecordAtPresentValue_FF98200C00F9332BD1FE16F549CAC16A" xlink:to="lab_msc_DiscountRateAssumedToRecordAtPresentValue_FF98200C00F9332BD1FE16F549CAC16A" xlink:type="arc"/>
<link:label id="lab_msc_UndiscountedLiabilityExpectedToBePaid_619A968394EBA0A87DD116F549CA02F7_terseLabel_en-US" xlink:label="lab_msc_UndiscountedLiabilityExpectedToBePaid_619A968394EBA0A87DD116F549CA02F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Undiscounted Liability Expected to be Paid </link:label>
<link:label id="lab_msc_UndiscountedLiabilityExpectedToBePaid_619A968394EBA0A87DD116F549CA02F7_label_en-US" xlink:label="lab_msc_UndiscountedLiabilityExpectedToBePaid_619A968394EBA0A87DD116F549CA02F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Undiscounted Liability Expected to be Paid </link:label>
<link:label id="lab_msc_UndiscountedLiabilityExpectedToBePaid_619A968394EBA0A87DD116F549CA02F7_documentation_en-US" xlink:label="lab_msc_UndiscountedLiabilityExpectedToBePaid_619A968394EBA0A87DD116F549CA02F7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Undiscounted Liability Expected to be Paid </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_UndiscountedLiabilityExpectedToBePaid" xlink:label="loc_msc_UndiscountedLiabilityExpectedToBePaid_619A968394EBA0A87DD116F549CA02F7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_UndiscountedLiabilityExpectedToBePaid_619A968394EBA0A87DD116F549CA02F7" xlink:to="lab_msc_UndiscountedLiabilityExpectedToBePaid_619A968394EBA0A87DD116F549CA02F7" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccrualForEnvironmentalLossContingenciesGross_63FC47EB0E652A15879716F549CA5E8B_terseLabel_en-US" xlink:label="lab_us-gaap_AccrualForEnvironmentalLossContingenciesGross_63FC47EB0E652A15879716F549CA5E8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrual for Environmental Loss Contingencies, Gross </link:label>
<link:label id="lab_us-gaap_AccrualForEnvironmentalLossContingenciesGross_63FC47EB0E652A15879716F549CA5E8B_label_en-US" xlink:label="lab_us-gaap_AccrualForEnvironmentalLossContingenciesGross_63FC47EB0E652A15879716F549CA5E8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrual for Environmental Loss Contingencies, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesGross" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingenciesGross_63FC47EB0E652A15879716F549CA5E8B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccrualForEnvironmentalLossContingenciesGross_63FC47EB0E652A15879716F549CA5E8B" xlink:to="lab_us-gaap_AccrualForEnvironmentalLossContingenciesGross_63FC47EB0E652A15879716F549CA5E8B" xlink:type="arc"/>
<link:label id="lab_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C79B92745400214008BE16F549CAC43B_terseLabel_en-US" xlink:label="lab_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C79B92745400214008BE16F549CAC43B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrual for Environmental Loss Contingencies, Undiscounted, Due Ratably over the Next Five Years </link:label>
<link:label id="lab_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C79B92745400214008BE16F549CAC43B_label_en-US" xlink:label="lab_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C79B92745400214008BE16F549CAC43B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrual for Environmental Loss Contingencies, Undiscounted, Due within One to Five Years </link:label>
<link:label id="lab_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C79B92745400214008BE16F549CAC43B_documentation_en-US" xlink:label="lab_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C79B92745400214008BE16F549CAC43B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Accrual for Environmental Loss Contingencies, Undiscounted, Due within One to Five Years </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears" xlink:label="loc_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C79B92745400214008BE16F549CAC43B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C79B92745400214008BE16F549CAC43B" xlink:to="lab_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C79B92745400214008BE16F549CAC43B" xlink:type="arc"/>
<link:label id="lab_us-gaap_LossContingencyEstimateOfPossibleLoss_4BEDFE9F6634A2AF264516F549CA99D1_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyEstimateOfPossibleLoss_4BEDFE9F6634A2AF264516F549CA99D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Liability </link:label>
<link:label id="lab_us-gaap_LossContingencyEstimateOfPossibleLoss_4BEDFE9F6634A2AF264516F549CA99D1_label_en-US" xlink:label="lab_us-gaap_LossContingencyEstimateOfPossibleLoss_4BEDFE9F6634A2AF264516F549CA99D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loss Contingency, Estimate of Possible Loss </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingencyEstimateOfPossibleLoss" xlink:label="loc_us-gaap_LossContingencyEstimateOfPossibleLoss_4BEDFE9F6634A2AF264516F549CA99D1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyEstimateOfPossibleLoss_4BEDFE9F6634A2AF264516F549CA99D1" xlink:to="lab_us-gaap_LossContingencyEstimateOfPossibleLoss_4BEDFE9F6634A2AF264516F549CA99D1" xlink:type="arc"/>
<link:label id="lab_us-gaap_LitigationReserveCurrent_1270420421EE126CBC1016F549CAB349_terseLabel_en-US" xlink:label="lab_us-gaap_LitigationReserveCurrent_1270420421EE126CBC1016F549CAB349" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Estimated Litigation Liability, Current </link:label>
<link:label id="lab_us-gaap_LitigationReserveCurrent_1270420421EE126CBC1016F549CAB349_label_en-US" xlink:label="lab_us-gaap_LitigationReserveCurrent_1270420421EE126CBC1016F549CAB349" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Estimated Litigation Liability, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LitigationReserveCurrent" xlink:label="loc_us-gaap_LitigationReserveCurrent_1270420421EE126CBC1016F549CAB349" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LitigationReserveCurrent_1270420421EE126CBC1016F549CAB349" xlink:to="lab_us-gaap_LitigationReserveCurrent_1270420421EE126CBC1016F549CAB349" xlink:type="arc"/>
<link:label id="lab_us-gaap_LitigationReserveNoncurrent_3CD8C3D113C458CD08F616F549CADA30_terseLabel_en-US" xlink:label="lab_us-gaap_LitigationReserveNoncurrent_3CD8C3D113C458CD08F616F549CADA30" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Estimated Litigation Liability, Noncurrent </link:label>
<link:label id="lab_us-gaap_LitigationReserveNoncurrent_3CD8C3D113C458CD08F616F549CADA30_label_en-US" xlink:label="lab_us-gaap_LitigationReserveNoncurrent_3CD8C3D113C458CD08F616F549CADA30" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Estimated Litigation Liability, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LitigationReserveNoncurrent" xlink:label="loc_us-gaap_LitigationReserveNoncurrent_3CD8C3D113C458CD08F616F549CADA30" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LitigationReserveNoncurrent_3CD8C3D113C458CD08F616F549CADA30" xlink:to="lab_us-gaap_LitigationReserveNoncurrent_3CD8C3D113C458CD08F616F549CADA30" xlink:type="arc"/>
<link:label id="lab_us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_75D8EE0006DF41F4E61716F7397C1B9C_terseLabel_en-US" xlink:label="lab_us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_75D8EE0006DF41F4E61716F7397C1B9C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Site Contingency, Loss Exposure Not Accrued, Best Estimate </link:label>
<link:label id="lab_us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_75D8EE0006DF41F4E61716F7397C1B9C_label_en-US" xlink:label="lab_us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_75D8EE0006DF41F4E61716F7397C1B9C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Site Contingency, Loss Exposure Not Accrued, Best Estimate </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate" xlink:label="loc_us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_75D8EE0006DF41F4E61716F7397C1B9C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_75D8EE0006DF41F4E61716F7397C1B9C" xlink:to="lab_us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_75D8EE0006DF41F4E61716F7397C1B9C" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountingPoliciesAbstract_E40ACB32D9C2BE81F2A84AA3AFAA45D9_label_en-US" xlink:label="lab_us-gaap_AccountingPoliciesAbstract_E40ACB32D9C2BE81F2A84AA3AFAA45D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounting Policies [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_E40ACB32D9C2BE81F2A84AA3AFAA45D9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_E40ACB32D9C2BE81F2A84AA3AFAA45D9" xlink:to="lab_us-gaap_AccountingPoliciesAbstract_E40ACB32D9C2BE81F2A84AA3AFAA45D9" xlink:type="arc"/>
<link:label id="lab_msc_SummaryOfSignificantAccountingPoliciesTable_8ED37DDF518690334A8D4AA3AFAA6E76_terseLabel_en-US" xlink:label="lab_msc_SummaryOfSignificantAccountingPoliciesTable_8ED37DDF518690334A8D4AA3AFAA6E76" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Summary of Significant Accounting Policies [Table] </link:label>
<link:label id="lab_msc_SummaryOfSignificantAccountingPoliciesTable_8ED37DDF518690334A8D4AA3AFAA6E76_label_en-US" xlink:label="lab_msc_SummaryOfSignificantAccountingPoliciesTable_8ED37DDF518690334A8D4AA3AFAA6E76" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Summary of Significant Accounting Policies [Table] </link:label>
<link:label id="lab_msc_SummaryOfSignificantAccountingPoliciesTable_8ED37DDF518690334A8D4AA3AFAA6E76_documentation_en-US" xlink:label="lab_msc_SummaryOfSignificantAccountingPoliciesTable_8ED37DDF518690334A8D4AA3AFAA6E76" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Summary of Significant Accounting Policies [Table] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_SummaryOfSignificantAccountingPoliciesTable" xlink:label="loc_msc_SummaryOfSignificantAccountingPoliciesTable_8ED37DDF518690334A8D4AA3AFAA6E76" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SummaryOfSignificantAccountingPoliciesTable_8ED37DDF518690334A8D4AA3AFAA6E76" xlink:to="lab_msc_SummaryOfSignificantAccountingPoliciesTable_8ED37DDF518690334A8D4AA3AFAA6E76" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0FF3090EF26EF719BC6E4AA3AFAA23FA_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0FF3090EF26EF719BC6E4AA3AFAA23FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Adjustments for New Accounting Pronouncements [Axis] </link:label>
<link:label id="lab_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0FF3090EF26EF719BC6E4AA3AFAA23FA_label_en-US" xlink:label="lab_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0FF3090EF26EF719BC6E4AA3AFAA23FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Adjustments for New Accounting Pronouncements [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0FF3090EF26EF719BC6E4AA3AFAA23FA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0FF3090EF26EF719BC6E4AA3AFAA23FA" xlink:to="lab_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0FF3090EF26EF719BC6E4AA3AFAA23FA" xlink:type="arc"/>
<link:label id="lab_us-gaap_TypeOfAdoptionMember_B07DAF4D47F29A3E2E7B4AA3AFAA7FD3_terseLabel_en-US" xlink:label="lab_us-gaap_TypeOfAdoptionMember_B07DAF4D47F29A3E2E7B4AA3AFAA7FD3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Type of Adoption [Domain] </link:label>
<link:label id="lab_us-gaap_TypeOfAdoptionMember_B07DAF4D47F29A3E2E7B4AA3AFAA7FD3_label_en-US" xlink:label="lab_us-gaap_TypeOfAdoptionMember_B07DAF4D47F29A3E2E7B4AA3AFAA7FD3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Type of Adoption [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_B07DAF4D47F29A3E2E7B4AA3AFAA7FD3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TypeOfAdoptionMember_B07DAF4D47F29A3E2E7B4AA3AFAA7FD3" xlink:to="lab_us-gaap_TypeOfAdoptionMember_B07DAF4D47F29A3E2E7B4AA3AFAA7FD3" xlink:type="arc"/>
<link:label id="lab_us-gaap_PreviousAccountingGuidanceMember_791D7536A1C9340F425F4AA3AFAA27B7_terseLabel_en-US" xlink:label="lab_us-gaap_PreviousAccountingGuidanceMember_791D7536A1C9340F425F4AA3AFAA27B7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Previous Accounting Guidance [Member] </link:label>
<link:label id="lab_us-gaap_PreviousAccountingGuidanceMember_791D7536A1C9340F425F4AA3AFAA27B7_label_en-US" xlink:label="lab_us-gaap_PreviousAccountingGuidanceMember_791D7536A1C9340F425F4AA3AFAA27B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Previous Accounting Guidance [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreviousAccountingGuidanceMember" xlink:label="loc_us-gaap_PreviousAccountingGuidanceMember_791D7536A1C9340F425F4AA3AFAA27B7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreviousAccountingGuidanceMember_791D7536A1C9340F425F4AA3AFAA27B7" xlink:to="lab_us-gaap_PreviousAccountingGuidanceMember_791D7536A1C9340F425F4AA3AFAA27B7" xlink:type="arc"/>
<link:label id="lab_us-gaap_NewAccountingPronouncementMember_FADC52D1614D5B798DAD4AA3AFAA35C7_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementMember_FADC52D1614D5B798DAD4AA3AFAA35C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Adjustments for New Accounting Pronouncement [Member] </link:label>
<link:label id="lab_us-gaap_NewAccountingPronouncementMember_FADC52D1614D5B798DAD4AA3AFAA35C7_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementMember_FADC52D1614D5B798DAD4AA3AFAA35C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Adjustments for New Accounting Pronouncement [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="loc_us-gaap_NewAccountingPronouncementMember_FADC52D1614D5B798DAD4AA3AFAA35C7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementMember_FADC52D1614D5B798DAD4AA3AFAA35C7" xlink:to="lab_us-gaap_NewAccountingPronouncementMember_FADC52D1614D5B798DAD4AA3AFAA35C7" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_566F86E12FC4DFF109864AA3AFAACA8F_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_566F86E12FC4DFF109864AA3AFAACA8F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Adjustments for Change in Accounting Principle [Axis] </link:label>
<link:label id="lab_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_566F86E12FC4DFF109864AA3AFAACA8F_label_en-US" xlink:label="lab_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_566F86E12FC4DFF109864AA3AFAACA8F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Adjustments for Change in Accounting Principle [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_566F86E12FC4DFF109864AA3AFAACA8F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_566F86E12FC4DFF109864AA3AFAACA8F" xlink:to="lab_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_566F86E12FC4DFF109864AA3AFAACA8F" xlink:type="arc"/>
<link:label id="lab_us-gaap_ChangeInAccountingPrincipleMember_DA34E728109119CC68F74AA3AFAA67EB_terseLabel_en-US" xlink:label="lab_us-gaap_ChangeInAccountingPrincipleMember_DA34E728109119CC68F74AA3AFAA67EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Adjustments for Change in Accounting Principle [Domain] </link:label>
<link:label id="lab_us-gaap_ChangeInAccountingPrincipleMember_DA34E728109119CC68F74AA3AFAA67EB_label_en-US" xlink:label="lab_us-gaap_ChangeInAccountingPrincipleMember_DA34E728109119CC68F74AA3AFAA67EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Adjustments for Change in Accounting Principle [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_DA34E728109119CC68F74AA3AFAA67EB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_DA34E728109119CC68F74AA3AFAA67EB" xlink:to="lab_us-gaap_ChangeInAccountingPrincipleMember_DA34E728109119CC68F74AA3AFAA67EB" xlink:type="arc"/>
<link:label id="lab_us-gaap_FinancialInstrumentAxis_1F1F85105FFA4B3D7D8B4AA3AFAAF44D_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialInstrumentAxis_1F1F85105FFA4B3D7D8B4AA3AFAAF44D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value, Option, Qualitative Disclosures Related to Election, by Eligible Item or Group [Axis] </link:label>
<link:label id="lab_us-gaap_FinancialInstrumentAxis_1F1F85105FFA4B3D7D8B4AA3AFAAF44D_label_en-US" xlink:label="lab_us-gaap_FinancialInstrumentAxis_1F1F85105FFA4B3D7D8B4AA3AFAAF44D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financial Instrument [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="loc_us-gaap_FinancialInstrumentAxis_1F1F85105FFA4B3D7D8B4AA3AFAAF44D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinancialInstrumentAxis_1F1F85105FFA4B3D7D8B4AA3AFAAF44D" xlink:to="lab_us-gaap_FinancialInstrumentAxis_1F1F85105FFA4B3D7D8B4AA3AFAAF44D" xlink:type="arc"/>
<link:label id="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_FDA1DEDC8CDEE20526574AA3AFAADD10_terseLabel_en-US" xlink:label="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_FDA1DEDC8CDEE20526574AA3AFAADD10" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value, Option, Eligible Item or Group [Domain] </link:label>
<link:label id="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_FDA1DEDC8CDEE20526574AA3AFAADD10_label_en-US" xlink:label="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_FDA1DEDC8CDEE20526574AA3AFAADD10" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financial Instruments [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_FDA1DEDC8CDEE20526574AA3AFAADD10" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_FDA1DEDC8CDEE20526574AA3AFAADD10" xlink:to="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_FDA1DEDC8CDEE20526574AA3AFAADD10" xlink:type="arc"/>
<link:label id="lab_us-gaap_ContractWithCustomerAssetNet_9D48B67F5107C7FD26A54AA3AFAA51CB_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNet_9D48B67F5107C7FD26A54AA3AFAA51CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Asset, Net </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerAssetNet_9D48B67F5107C7FD26A54AA3AFAA51CB_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNet_9D48B67F5107C7FD26A54AA3AFAA51CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Asset, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ContractWithCustomerAssetNet" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_9D48B67F5107C7FD26A54AA3AFAA51CB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerAssetNet_9D48B67F5107C7FD26A54AA3AFAA51CB" xlink:to="lab_us-gaap_ContractWithCustomerAssetNet_9D48B67F5107C7FD26A54AA3AFAA51CB" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryNet_2B0F0D3E9377EE49B8FB4AA3AFAA64DC_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_2B0F0D3E9377EE49B8FB4AA3AFAA64DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Inventory, Net </link:label>
<link:label id="lab_us-gaap_InventoryNet_2B0F0D3E9377EE49B8FB4AA3AFAA64DC_label_en-US" xlink:label="lab_us-gaap_InventoryNet_2B0F0D3E9377EE49B8FB4AA3AFAA64DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_2B0F0D3E9377EE49B8FB4AA3AFAA64DC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNet_2B0F0D3E9377EE49B8FB4AA3AFAA64DC" xlink:to="lab_us-gaap_InventoryNet_2B0F0D3E9377EE49B8FB4AA3AFAA64DC" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInRestrictedCash_8F3C6A083214479F6FDB4AA3AFAA009B_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInRestrictedCash_8F3C6A083214479F6FDB4AA3AFAA009B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Restricted Cash </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInRestrictedCash_8F3C6A083214479F6FDB4AA3AFAA009B_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInRestrictedCash_8F3C6A083214479F6FDB4AA3AFAA009B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Restricted Cash </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInRestrictedCash" xlink:label="loc_us-gaap_IncreaseDecreaseInRestrictedCash_8F3C6A083214479F6FDB4AA3AFAA009B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInRestrictedCash_8F3C6A083214479F6FDB4AA3AFAA009B" xlink:to="lab_us-gaap_IncreaseDecreaseInRestrictedCash_8F3C6A083214479F6FDB4AA3AFAA009B" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_7C2C121BA70FE27DF99A4AA3AFAAF67C_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_7C2C121BA70FE27DF99A4AA3AFAAF67C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_7C2C121BA70FE27DF99A4AA3AFAAF67C_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_7C2C121BA70FE27DF99A4AA3AFAAF67C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_7C2C121BA70FE27DF99A4AA3AFAAF67C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_7C2C121BA70FE27DF99A4AA3AFAAF67C" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_7C2C121BA70FE27DF99A4AA3AFAAF67C" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3C2B52F9A7383F55C5444AA3AFAAA228_terseLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3C2B52F9A7383F55C5444AA3AFAAA228" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Change in cash and cash equivalents </link:label>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3C2B52F9A7383F55C5444AA3AFAAA228_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3C2B52F9A7383F55C5444AA3AFAAA228" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3C2B52F9A7383F55C5444AA3AFAAA228" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3C2B52F9A7383F55C5444AA3AFAAA228" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_3C2B52F9A7383F55C5444AA3AFAAA228" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_5CB6B9E7A05F39185A784AA3AFAAC66C_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_5CB6B9E7A05F39185A784AA3AFAAC66C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, at Carrying Value </link:label>
<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_5CB6B9E7A05F39185A784AA3AFAAC66C_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_5CB6B9E7A05F39185A784AA3AFAAC66C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, at Carrying Value </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_5CB6B9E7A05F39185A784AA3AFAAC66C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_5CB6B9E7A05F39185A784AA3AFAAC66C" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_5CB6B9E7A05F39185A784AA3AFAAC66C" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestrictedCash_253BBA7876A7771F2A4A4AA3AFAAE931_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedCash_253BBA7876A7771F2A4A4AA3AFAAE931" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted Cash </link:label>
<link:label id="lab_us-gaap_RestrictedCash_253BBA7876A7771F2A4A4AA3AFAAE931_label_en-US" xlink:label="lab_us-gaap_RestrictedCash_253BBA7876A7771F2A4A4AA3AFAAE931" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restricted Cash </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedCash" xlink:label="loc_us-gaap_RestrictedCash_253BBA7876A7771F2A4A4AA3AFAAE931" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedCash_253BBA7876A7771F2A4A4AA3AFAAE931" xlink:to="lab_us-gaap_RestrictedCash_253BBA7876A7771F2A4A4AA3AFAAE931" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CD32FED93268D75EE90E4AA3AFAA24AF_verboseLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CD32FED93268D75EE90E4AA3AFAA24AF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash and cash equivalents (including restricted cash of $0 and $18, respectively) </link:label>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CD32FED93268D75EE90E4AA3AFAA24AF_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CD32FED93268D75EE90E4AA3AFAA24AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CD32FED93268D75EE90E4AA3AFAA24AF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CD32FED93268D75EE90E4AA3AFAA24AF" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CD32FED93268D75EE90E4AA3AFAA24AF" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAssetsCurrent_BBE8B7674A4E8B02F5A64AA3AFAADF06_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_BBE8B7674A4E8B02F5A64AA3AFAADF06" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other current assets </link:label>
<link:label id="lab_us-gaap_OtherAssetsCurrent_BBE8B7674A4E8B02F5A64AA3AFAADF06_label_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_BBE8B7674A4E8B02F5A64AA3AFAADF06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_BBE8B7674A4E8B02F5A64AA3AFAADF06" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsCurrent_BBE8B7674A4E8B02F5A64AA3AFAADF06" xlink:to="lab_us-gaap_OtherAssetsCurrent_BBE8B7674A4E8B02F5A64AA3AFAADF06" xlink:type="arc"/>
<link:label id="lab_msc_Otherassetscurrentunderpreviousaccountingguidance_AEA6CD49C0E3F65D0EBC4ABF33AE9A42_terseLabel_en-US" xlink:label="lab_msc_Otherassetscurrentunderpreviousaccountingguidance_AEA6CD49C0E3F65D0EBC4ABF33AE9A42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other assets, current under previous accounting guidance </link:label>
<link:label id="lab_msc_Otherassetscurrentunderpreviousaccountingguidance_AEA6CD49C0E3F65D0EBC4ABF33AE9A42_label_en-US" xlink:label="lab_msc_Otherassetscurrentunderpreviousaccountingguidance_AEA6CD49C0E3F65D0EBC4ABF33AE9A42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other assets, current under previous accounting guidance </link:label>
<link:label id="lab_msc_Otherassetscurrentunderpreviousaccountingguidance_AEA6CD49C0E3F65D0EBC4ABF33AE9A42_documentation_en-US" xlink:label="lab_msc_Otherassetscurrentunderpreviousaccountingguidance_AEA6CD49C0E3F65D0EBC4ABF33AE9A42" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Other assets, current under previous accounting guidance </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_Otherassetscurrentunderpreviousaccountingguidance" xlink:label="loc_msc_Otherassetscurrentunderpreviousaccountingguidance_AEA6CD49C0E3F65D0EBC4ABF33AE9A42" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Otherassetscurrentunderpreviousaccountingguidance_AEA6CD49C0E3F65D0EBC4ABF33AE9A42" xlink:to="lab_msc_Otherassetscurrentunderpreviousaccountingguidance_AEA6CD49C0E3F65D0EBC4ABF33AE9A42" xlink:type="arc"/>
<link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_7A4609A95876F15153AC4AA3AFAA15DE_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_7A4609A95876F15153AC4AA3AFAA15DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated deficit </link:label>
<link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_7A4609A95876F15153AC4AA3AFAA15DE_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_7A4609A95876F15153AC4AA3AFAA15DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retained Earnings (Accumulated Deficit) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_7A4609A95876F15153AC4AA3AFAA15DE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetainedEarningsAccumulatedDeficit_7A4609A95876F15153AC4AA3AFAA15DE" xlink:to="lab_us-gaap_RetainedEarningsAccumulatedDeficit_7A4609A95876F15153AC4AA3AFAA15DE" xlink:type="arc"/>
<link:label id="lab_msc_Accumulateddeficitunderpreviousaccountingguidance_9B4D4A5BDABAF3B38EC84AC21A9A4663_terseLabel_en-US" xlink:label="lab_msc_Accumulateddeficitunderpreviousaccountingguidance_9B4D4A5BDABAF3B38EC84AC21A9A4663" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated deficit under previous accounting guidance </link:label>
<link:label id="lab_msc_Accumulateddeficitunderpreviousaccountingguidance_9B4D4A5BDABAF3B38EC84AC21A9A4663_label_en-US" xlink:label="lab_msc_Accumulateddeficitunderpreviousaccountingguidance_9B4D4A5BDABAF3B38EC84AC21A9A4663" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated deficit under previous accounting guidance </link:label>
<link:label id="lab_msc_Accumulateddeficitunderpreviousaccountingguidance_9B4D4A5BDABAF3B38EC84AC21A9A4663_documentation_en-US" xlink:label="lab_msc_Accumulateddeficitunderpreviousaccountingguidance_9B4D4A5BDABAF3B38EC84AC21A9A4663" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Accumulated deficit under previous accounting guidance </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_Accumulateddeficitunderpreviousaccountingguidance" xlink:label="loc_msc_Accumulateddeficitunderpreviousaccountingguidance_9B4D4A5BDABAF3B38EC84AC21A9A4663" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Accumulateddeficitunderpreviousaccountingguidance_9B4D4A5BDABAF3B38EC84AC21A9A4663" xlink:to="lab_msc_Accumulateddeficitunderpreviousaccountingguidance_9B4D4A5BDABAF3B38EC84AC21A9A4663" xlink:type="arc"/>
<link:label id="lab_us-gaap_GrossProfit_3F39F701A84E9E4618914AA3AFAAB815_terseLabel_en-US" xlink:label="lab_us-gaap_GrossProfit_3F39F701A84E9E4618914AA3AFAAB815" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Gross Profit </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaap_GrossProfit_3F39F701A84E9E4618914AA3AFAAB815" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GrossProfit_3F39F701A84E9E4618914AA3AFAAB815" xlink:to="lab_us-gaap_GrossProfit_3F39F701A84E9E4618914AA3AFAAB815" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves_0A17D4E67653CCDA645F4AA3AFAA5200_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves_0A17D4E67653CCDA645F4AA3AFAA5200" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finished and in-process goods </link:label>
<link:label id="lab_us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves_0A17D4E67653CCDA645F4AA3AFAA5200_label_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves_0A17D4E67653CCDA645F4AA3AFAA5200" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Finished Goods and Work in Process, Net of Reserves </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves" xlink:label="loc_us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves_0A17D4E67653CCDA645F4AA3AFAA5200" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves_0A17D4E67653CCDA645F4AA3AFAA5200" xlink:to="lab_us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves_0A17D4E67653CCDA645F4AA3AFAA5200" xlink:type="arc"/>
<link:label id="lab_us-gaap_Cash_6BCE693E8569E9371E7B4AA3AFAA0DB9_terseLabel_en-US" xlink:label="lab_us-gaap_Cash_6BCE693E8569E9371E7B4AA3AFAA0DB9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash </link:label>
<link:label id="lab_us-gaap_Cash_6BCE693E8569E9371E7B4AA3AFAA0DB9_label_en-US" xlink:label="lab_us-gaap_Cash_6BCE693E8569E9371E7B4AA3AFAA0DB9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Cash" xlink:label="loc_us-gaap_Cash_6BCE693E8569E9371E7B4AA3AFAA0DB9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Cash_6BCE693E8569E9371E7B4AA3AFAA0DB9" xlink:to="lab_us-gaap_Cash_6BCE693E8569E9371E7B4AA3AFAA0DB9" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingIncomeLoss_CBE7A2D2ED52AEDEDCCC4AA3AFAABD0C_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_CBE7A2D2ED52AEDEDCCC4AA3AFAABD0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Income (Loss) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_CBE7A2D2ED52AEDEDCCC4AA3AFAABD0C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingIncomeLoss_CBE7A2D2ED52AEDEDCCC4AA3AFAABD0C" xlink:to="lab_us-gaap_OperatingIncomeLoss_CBE7A2D2ED52AEDEDCCC4AA3AFAABD0C" xlink:type="arc"/>
<link:label id="lab_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults_8B6077C0FE3DA3C57CD74AA3AFAA4B0A_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults_8B6077C0FE3DA3C57CD74AA3AFAA4B0A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results </link:label>
<link:label id="lab_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults_8B6077C0FE3DA3C57CD74AA3AFAA4B0A_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults_8B6077C0FE3DA3C57CD74AA3AFAA4B0A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults" xlink:label="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults_8B6077C0FE3DA3C57CD74AA3AFAA4B0A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults_8B6077C0FE3DA3C57CD74AA3AFAA4B0A" xlink:to="lab_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults_8B6077C0FE3DA3C57CD74AA3AFAA4B0A" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_99A2F29D9AF0D327F9874AA3AFAAEE3B_terseLabel_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_99A2F29D9AF0D327F9874AA3AFAAEE3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Nonoperating Income (Expense) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_99A2F29D9AF0D327F9874AA3AFAAEE3B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpense_99A2F29D9AF0D327F9874AA3AFAAEE3B" xlink:to="lab_us-gaap_OtherNonoperatingIncomeExpense_99A2F29D9AF0D327F9874AA3AFAAEE3B" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract_B2143E70B7AD7DBCEC8B0EBF966ACF4B_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract_B2143E70B7AD7DBCEC8B0EBF966ACF4B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract" xlink:label="loc_us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract_B2143E70B7AD7DBCEC8B0EBF966ACF4B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract_B2143E70B7AD7DBCEC8B0EBF966ACF4B" xlink:to="lab_us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract_B2143E70B7AD7DBCEC8B0EBF966ACF4B" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock_626010EFB785FC8FFD050EBF966AD5B5_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock_626010EFB785FC8FFD050EBF966AD5B5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Changes in Projected Benefit Obligations [Table Text Block] </link:label>
<link:label id="lab_us-gaap_ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock_626010EFB785FC8FFD050EBF966AD5B5_label_en-US" xlink:label="lab_us-gaap_ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock_626010EFB785FC8FFD050EBF966AD5B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Changes in Projected Benefit Obligations [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock_626010EFB785FC8FFD050EBF966AD5B5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock_626010EFB785FC8FFD050EBF966AD5B5" xlink:to="lab_us-gaap_ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock_626010EFB785FC8FFD050EBF966AD5B5" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_788A76E59441A66E52560EBF96A837F8_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_788A76E59441A66E52560EBF96A837F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] </link:label>
<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_788A76E59441A66E52560EBF96A837F8_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_788A76E59441A66E52560EBF96A837F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Measurements, Recurring and Nonrecurring [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_788A76E59441A66E52560EBF96A837F8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_788A76E59441A66E52560EBF96A837F8" xlink:to="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_788A76E59441A66E52560EBF96A837F8" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_CC15456DEBAAC19542700EBF96A8AB06_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_CC15456DEBAAC19542700EBF96A8AB06" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] </link:label>
<link:label id="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_CC15456DEBAAC19542700EBF96A8AB06_label_en-US" xlink:label="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_CC15456DEBAAC19542700EBF96A8AB06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_CC15456DEBAAC19542700EBF96A8AB06" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_CC15456DEBAAC19542700EBF96A8AB06" xlink:to="lab_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_CC15456DEBAAC19542700EBF96A8AB06" xlink:type="arc"/>
<link:label id="lab_msc_BackgroundAndBasisOfPresentationAbstract_FED908FBDE25383EC6F30EBF9754148D_label_en-US" xlink:label="lab_msc_BackgroundAndBasisOfPresentationAbstract_FED908FBDE25383EC6F30EBF9754148D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Background and Basis of Presentation [Abstract] </link:label>
<link:label id="lab_msc_BackgroundAndBasisOfPresentationAbstract_FED908FBDE25383EC6F30EBF9754148D_documentation_en-US" xlink:label="lab_msc_BackgroundAndBasisOfPresentationAbstract_FED908FBDE25383EC6F30EBF9754148D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Background and Basis of Presentation [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_BackgroundAndBasisOfPresentationAbstract" xlink:label="loc_msc_BackgroundAndBasisOfPresentationAbstract_FED908FBDE25383EC6F30EBF9754148D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_BackgroundAndBasisOfPresentationAbstract_FED908FBDE25383EC6F30EBF9754148D" xlink:to="lab_msc_BackgroundAndBasisOfPresentationAbstract_FED908FBDE25383EC6F30EBF9754148D" xlink:type="arc"/>
<link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_499DA2A20485ADE4AC280EBF9754DF60_terseLabel_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_499DA2A20485ADE4AC280EBF9754DF60" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] </link:label>
<link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_499DA2A20485ADE4AC280EBF9754DF60_label_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_499DA2A20485ADE4AC280EBF9754DF60" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_499DA2A20485ADE4AC280EBF9754DF60" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_499DA2A20485ADE4AC280EBF9754DF60" xlink:to="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_499DA2A20485ADE4AC280EBF9754DF60" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_0791515458CB73C30FAE3BAF5D697B03_label_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract_0791515458CB73C30FAE3BAF5D697B03" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Financial Position [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_0791515458CB73C30FAE3BAF5D697B03" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_0791515458CB73C30FAE3BAF5D697B03" xlink:to="lab_us-gaap_StatementOfFinancialPositionAbstract_0791515458CB73C30FAE3BAF5D697B03" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetsAbstract_C1BD51E0D93C4382B2393BAF5D6A8160_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract_C1BD51E0D93C4382B2393BAF5D6A8160" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Assets </link:label>
<link:label id="lab_us-gaap_AssetsAbstract_C1BD51E0D93C4382B2393BAF5D6A8160_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract_C1BD51E0D93C4382B2393BAF5D6A8160" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_C1BD51E0D93C4382B2393BAF5D6A8160" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsAbstract_C1BD51E0D93C4382B2393BAF5D6A8160" xlink:to="lab_us-gaap_AssetsAbstract_C1BD51E0D93C4382B2393BAF5D6A8160" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CF2E71CE3CC72A5826C43BAF5D6AEB49_terseLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CF2E71CE3CC72A5826C43BAF5D6AEB49" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash and cash equivalents (including restricted cash of $18) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CF2E71CE3CC72A5826C43BAF5D6AEB49" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CF2E71CE3CC72A5826C43BAF5D6AEB49" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CF2E71CE3CC72A5826C43BAF5D6AEB49" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountsReceivableNet_C6AE0780F3579587FB883BAF5D6AD8B1_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNet_C6AE0780F3579587FB883BAF5D6AD8B1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts receivable (net of allowance for doubtful accounts of $19) </link:label>
<link:label id="lab_us-gaap_AccountsReceivableNet_C6AE0780F3579587FB883BAF5D6AD8B1_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNet_C6AE0780F3579587FB883BAF5D6AD8B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Receivable, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsReceivableNet" xlink:label="loc_us-gaap_AccountsReceivableNet_C6AE0780F3579587FB883BAF5D6AD8B1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNet_C6AE0780F3579587FB883BAF5D6AD8B1" xlink:to="lab_us-gaap_AccountsReceivableNet_C6AE0780F3579587FB883BAF5D6AD8B1" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryNetAbstract_B93A9CFE025C49EBA0143BAF5D6A5665_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryNetAbstract_B93A9CFE025C49EBA0143BAF5D6A5665" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Inventories: </link:label>
<link:label id="lab_us-gaap_InventoryNetAbstract_B93A9CFE025C49EBA0143BAF5D6A5665_label_en-US" xlink:label="lab_us-gaap_InventoryNetAbstract_B93A9CFE025C49EBA0143BAF5D6A5665" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Net [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InventoryNetAbstract" xlink:label="loc_us-gaap_InventoryNetAbstract_B93A9CFE025C49EBA0143BAF5D6A5665" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNetAbstract_B93A9CFE025C49EBA0143BAF5D6A5665" xlink:to="lab_us-gaap_InventoryNetAbstract_B93A9CFE025C49EBA0143BAF5D6A5665" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves_2F2D90E3D65222F4B40F3BAF5D6AE7F8_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves_2F2D90E3D65222F4B40F3BAF5D6AE7F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Raw materials and supplies </link:label>
<link:label id="lab_us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves_2F2D90E3D65222F4B40F3BAF5D6AE7F8_label_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves_2F2D90E3D65222F4B40F3BAF5D6AE7F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Raw Materials and Supplies, Net of Reserves </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves" xlink:label="loc_us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves_2F2D90E3D65222F4B40F3BAF5D6AE7F8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves_2F2D90E3D65222F4B40F3BAF5D6AE7F8" xlink:to="lab_us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves_2F2D90E3D65222F4B40F3BAF5D6AE7F8" xlink:type="arc"/>
<link:label id="lab_msc_Totalcurrentassetsheldforsale_443C7C903FD28D8CFE643BAF5D6A2C5B_terseLabel_en-US" xlink:label="lab_msc_Totalcurrentassetsheldforsale_443C7C903FD28D8CFE643BAF5D6A2C5B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current assets held for sale </link:label>
<link:label id="lab_msc_Totalcurrentassetsheldforsale_443C7C903FD28D8CFE643BAF5D6A2C5B_label_en-US" xlink:label="lab_msc_Totalcurrentassetsheldforsale_443C7C903FD28D8CFE643BAF5D6A2C5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Total current assets held for sale </link:label>
<link:label id="lab_msc_Totalcurrentassetsheldforsale_443C7C903FD28D8CFE643BAF5D6A2C5B_documentation_en-US" xlink:label="lab_msc_Totalcurrentassetsheldforsale_443C7C903FD28D8CFE643BAF5D6A2C5B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Total current assets held for sale </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_Totalcurrentassetsheldforsale" xlink:label="loc_msc_Totalcurrentassetsheldforsale_443C7C903FD28D8CFE643BAF5D6A2C5B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Totalcurrentassetsheldforsale_443C7C903FD28D8CFE643BAF5D6A2C5B" xlink:to="lab_msc_Totalcurrentassetsheldforsale_443C7C903FD28D8CFE643BAF5D6A2C5B" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetsCurrent_7709669470500C1DBF023BAF5D6A3FD2_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_7709669470500C1DBF023BAF5D6A3FD2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total current assets </link:label>
<link:label id="lab_us-gaap_AssetsCurrent_7709669470500C1DBF023BAF5D6A3FD2_label_en-US" xlink:label="lab_us-gaap_AssetsCurrent_7709669470500C1DBF023BAF5D6A3FD2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_7709669470500C1DBF023BAF5D6A3FD2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrent_7709669470500C1DBF023BAF5D6A3FD2" xlink:to="lab_us-gaap_AssetsCurrent_7709669470500C1DBF023BAF5D6A3FD2" xlink:type="arc"/>
<link:label id="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_676A7D929140859796373BAF5D6ACBCB_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_676A7D929140859796373BAF5D6ACBCB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Investment in unconsolidated entities </link:label>
<link:label id="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_676A7D929140859796373BAF5D6ACBCB_label_en-US" xlink:label="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_676A7D929140859796373BAF5D6ACBCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_676A7D929140859796373BAF5D6ACBCB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_676A7D929140859796373BAF5D6ACBCB" xlink:to="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_676A7D929140859796373BAF5D6ACBCB" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredTaxAssetsNet_71353831712D76FFC2FE3BAF5D6AB278_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsNet_71353831712D76FFC2FE3BAF5D6AB278" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred income taxes </link:label>
<link:label id="lab_us-gaap_DeferredTaxAssetsNet_71353831712D76FFC2FE3BAF5D6AB278_label_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsNet_71353831712D76FFC2FE3BAF5D6AB278" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Tax Assets, Net of Valuation Allowance </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_71353831712D76FFC2FE3BAF5D6AB278" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_71353831712D76FFC2FE3BAF5D6AB278" xlink:to="lab_us-gaap_DeferredTaxAssetsNet_71353831712D76FFC2FE3BAF5D6AB278" xlink:type="arc"/>
<link:label id="lab_msc_Totallongtermassetsheldforsale_42BDB5B49BAA8BE5E0803BAF5D6A6DFB_terseLabel_en-US" xlink:label="lab_msc_Totallongtermassetsheldforsale_42BDB5B49BAA8BE5E0803BAF5D6A6DFB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term assets held for sale </link:label>
<link:label id="lab_msc_Totallongtermassetsheldforsale_42BDB5B49BAA8BE5E0803BAF5D6A6DFB_label_en-US" xlink:label="lab_msc_Totallongtermassetsheldforsale_42BDB5B49BAA8BE5E0803BAF5D6A6DFB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Total long-term assets held for sale </link:label>
<link:label id="lab_msc_Totallongtermassetsheldforsale_42BDB5B49BAA8BE5E0803BAF5D6A6DFB_documentation_en-US" xlink:label="lab_msc_Totallongtermassetsheldforsale_42BDB5B49BAA8BE5E0803BAF5D6A6DFB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Total long-term assets held for sale </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_Totallongtermassetsheldforsale" xlink:label="loc_msc_Totallongtermassetsheldforsale_42BDB5B49BAA8BE5E0803BAF5D6A6DFB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Totallongtermassetsheldforsale_42BDB5B49BAA8BE5E0803BAF5D6A6DFB" xlink:to="lab_msc_Totallongtermassetsheldforsale_42BDB5B49BAA8BE5E0803BAF5D6A6DFB" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAssetsNoncurrent_B2753C0F117A68C8BC3B3BAF5D6A2F56_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_B2753C0F117A68C8BC3B3BAF5D6A2F56" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Assets, Noncurrent </link:label>
<link:label id="lab_us-gaap_OtherAssetsNoncurrent_B2753C0F117A68C8BC3B3BAF5D6A2F56_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_B2753C0F117A68C8BC3B3BAF5D6A2F56" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_B2753C0F117A68C8BC3B3BAF5D6A2F56" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_B2753C0F117A68C8BC3B3BAF5D6A2F56" xlink:to="lab_us-gaap_OtherAssetsNoncurrent_B2753C0F117A68C8BC3B3BAF5D6A2F56" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentAbstract_C70934B06614CB4E80863BAF5D6A73D1_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentAbstract_C70934B06614CB4E80863BAF5D6A73D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property and equipment </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentAbstract_C70934B06614CB4E80863BAF5D6A73D1_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentAbstract_C70934B06614CB4E80863BAF5D6A73D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAbstract_C70934B06614CB4E80863BAF5D6A73D1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAbstract_C70934B06614CB4E80863BAF5D6A73D1" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentAbstract_C70934B06614CB4E80863BAF5D6A73D1" xlink:type="arc"/>
<link:label id="lab_us-gaap_Land_99FD14B1C7A9CB7C17A93BAF5D6A39ED_terseLabel_en-US" xlink:label="lab_us-gaap_Land_99FD14B1C7A9CB7C17A93BAF5D6A39ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Land </link:label>
<link:label id="lab_us-gaap_Land_99FD14B1C7A9CB7C17A93BAF5D6A39ED_label_en-US" xlink:label="lab_us-gaap_Land_99FD14B1C7A9CB7C17A93BAF5D6A39ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Land </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Land" xlink:label="loc_us-gaap_Land_99FD14B1C7A9CB7C17A93BAF5D6A39ED" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Land_99FD14B1C7A9CB7C17A93BAF5D6A39ED" xlink:to="lab_us-gaap_Land_99FD14B1C7A9CB7C17A93BAF5D6A39ED" xlink:type="arc"/>
<link:label id="lab_us-gaap_BuildingsAndImprovementsGross_DBA7787E8E5691A50B513BAF5D6BBC56_terseLabel_en-US" xlink:label="lab_us-gaap_BuildingsAndImprovementsGross_DBA7787E8E5691A50B513BAF5D6BBC56" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Buildings </link:label>
<link:label id="lab_us-gaap_BuildingsAndImprovementsGross_DBA7787E8E5691A50B513BAF5D6BBC56_label_en-US" xlink:label="lab_us-gaap_BuildingsAndImprovementsGross_DBA7787E8E5691A50B513BAF5D6BBC56" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Buildings and Improvements, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BuildingsAndImprovementsGross" xlink:label="loc_us-gaap_BuildingsAndImprovementsGross_DBA7787E8E5691A50B513BAF5D6BBC56" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BuildingsAndImprovementsGross_DBA7787E8E5691A50B513BAF5D6BBC56" xlink:to="lab_us-gaap_BuildingsAndImprovementsGross_DBA7787E8E5691A50B513BAF5D6BBC56" xlink:type="arc"/>
<link:label id="lab_us-gaap_MachineryAndEquipmentGross_8485EDC7CBD444B51D693BAF5D6B6B88_terseLabel_en-US" xlink:label="lab_us-gaap_MachineryAndEquipmentGross_8485EDC7CBD444B51D693BAF5D6B6B88" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Machinery and equipment </link:label>
<link:label id="lab_us-gaap_MachineryAndEquipmentGross_8485EDC7CBD444B51D693BAF5D6B6B88_label_en-US" xlink:label="lab_us-gaap_MachineryAndEquipmentGross_8485EDC7CBD444B51D693BAF5D6B6B88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Machinery and Equipment, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MachineryAndEquipmentGross" xlink:label="loc_us-gaap_MachineryAndEquipmentGross_8485EDC7CBD444B51D693BAF5D6B6B88" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MachineryAndEquipmentGross_8485EDC7CBD444B51D693BAF5D6B6B88" xlink:to="lab_us-gaap_MachineryAndEquipmentGross_8485EDC7CBD444B51D693BAF5D6B6B88" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_DF267EAE601A56509D963BAF5D6B4839_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_DF267EAE601A56509D963BAF5D6B4839" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Property, plant and equipment, gross </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_DF267EAE601A56509D963BAF5D6B4839_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_DF267EAE601A56509D963BAF5D6B4839" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_DF267EAE601A56509D963BAF5D6B4839" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_DF267EAE601A56509D963BAF5D6B4839" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentGross_DF267EAE601A56509D963BAF5D6B4839" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_349FB678920A709B2E663BAF5D6B1B5A_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_349FB678920A709B2E663BAF5D6B1B5A" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Less accumulated depreciation </link:label>
<link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_349FB678920A709B2E663BAF5D6B1B5A_label_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_349FB678920A709B2E663BAF5D6B1B5A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_349FB678920A709B2E663BAF5D6B1B5A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_349FB678920A709B2E663BAF5D6B1B5A" xlink:to="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_349FB678920A709B2E663BAF5D6B1B5A" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_5B930B4CF5058C355CBA3BAF5D6BEAA1_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_5B930B4CF5058C355CBA3BAF5D6BEAA1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Property, plant and equipment, net </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_5B930B4CF5058C355CBA3BAF5D6BEAA1_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_5B930B4CF5058C355CBA3BAF5D6BEAA1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_5B930B4CF5058C355CBA3BAF5D6BEAA1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_5B930B4CF5058C355CBA3BAF5D6BEAA1" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_5B930B4CF5058C355CBA3BAF5D6BEAA1" xlink:type="arc"/>
<link:label id="lab_us-gaap_Goodwill_1A54833C89F889ACC1953BAF5D6BB2B0_terseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_1A54833C89F889ACC1953BAF5D6BB2B0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Goodwill </link:label>
<link:label id="lab_us-gaap_Goodwill_1A54833C89F889ACC1953BAF5D6BB2B0_label_en-US" xlink:label="lab_us-gaap_Goodwill_1A54833C89F889ACC1953BAF5D6BB2B0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_1A54833C89F889ACC1953BAF5D6BB2B0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_1A54833C89F889ACC1953BAF5D6BB2B0" xlink:to="lab_us-gaap_Goodwill_1A54833C89F889ACC1953BAF5D6BB2B0" xlink:type="arc"/>
<link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_F9BE9A6AC7F9F091B3803BAF5D6B56E8_terseLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_F9BE9A6AC7F9F091B3803BAF5D6B56E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other intangible assets, net </link:label>
<link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_F9BE9A6AC7F9F091B3803BAF5D6B56E8_label_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_F9BE9A6AC7F9F091B3803BAF5D6B56E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intangible Assets, Net (Excluding Goodwill) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_F9BE9A6AC7F9F091B3803BAF5D6B56E8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_F9BE9A6AC7F9F091B3803BAF5D6B56E8" xlink:to="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_F9BE9A6AC7F9F091B3803BAF5D6B56E8" xlink:type="arc"/>
<link:label id="lab_us-gaap_Assets_057B3D887E0A5712332B3BAF5D6BA994_terseLabel_en-US" xlink:label="lab_us-gaap_Assets_057B3D887E0A5712332B3BAF5D6BA994" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total assets </link:label>
<link:label id="lab_us-gaap_Assets_057B3D887E0A5712332B3BAF5D6BA994_label_en-US" xlink:label="lab_us-gaap_Assets_057B3D887E0A5712332B3BAF5D6BA994" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_057B3D887E0A5712332B3BAF5D6BA994" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_057B3D887E0A5712332B3BAF5D6BA994" xlink:to="lab_us-gaap_Assets_057B3D887E0A5712332B3BAF5D6BA994" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_199AF89928A1E9C289003BAF5D6B8AE2_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_199AF89928A1E9C289003BAF5D6B8AE2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Liabilities and Deficit </link:label>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_199AF89928A1E9C289003BAF5D6B8AE2_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_199AF89928A1E9C289003BAF5D6B8AE2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities and Equity [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_199AF89928A1E9C289003BAF5D6B8AE2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_199AF89928A1E9C289003BAF5D6B8AE2" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_199AF89928A1E9C289003BAF5D6B8AE2" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_06BC9AE302C553C0A6D23BAF5D6BB59B_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_06BC9AE302C553C0A6D23BAF5D6BB59B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current liabilities </link:label>
<link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_06BC9AE302C553C0A6D23BAF5D6BB59B_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_06BC9AE302C553C0A6D23BAF5D6BB59B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Current [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_06BC9AE302C553C0A6D23BAF5D6BB59B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_06BC9AE302C553C0A6D23BAF5D6BB59B" xlink:to="lab_us-gaap_LiabilitiesCurrentAbstract_06BC9AE302C553C0A6D23BAF5D6BB59B" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountsPayableCurrent_3ACEC9F2BEB624E42B993BAF5D6B3D5E_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_3ACEC9F2BEB624E42B993BAF5D6B3D5E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts and drafts payable </link:label>
<link:label id="lab_us-gaap_AccountsPayableCurrent_3ACEC9F2BEB624E42B993BAF5D6B3D5E_label_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_3ACEC9F2BEB624E42B993BAF5D6B3D5E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Payable, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_3ACEC9F2BEB624E42B993BAF5D6B3D5E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableCurrent_3ACEC9F2BEB624E42B993BAF5D6B3D5E" xlink:to="lab_us-gaap_AccountsPayableCurrent_3ACEC9F2BEB624E42B993BAF5D6B3D5E" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtCurrent_1E199269E9F2E8F593903BAF5D6BC1B2_terseLabel_en-US" xlink:label="lab_us-gaap_DebtCurrent_1E199269E9F2E8F593903BAF5D6BC1B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt payable within one year </link:label>
<link:label id="lab_us-gaap_DebtCurrent_1E199269E9F2E8F593903BAF5D6BC1B2_label_en-US" xlink:label="lab_us-gaap_DebtCurrent_1E199269E9F2E8F593903BAF5D6BC1B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtCurrent" xlink:label="loc_us-gaap_DebtCurrent_1E199269E9F2E8F593903BAF5D6BC1B2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtCurrent_1E199269E9F2E8F593903BAF5D6BC1B2" xlink:to="lab_us-gaap_DebtCurrent_1E199269E9F2E8F593903BAF5D6BC1B2" xlink:type="arc"/>
<link:label id="lab_us-gaap_InterestPayableCurrent_6638000EC2E6554ACF6B3BAF5D6B8390_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPayableCurrent_6638000EC2E6554ACF6B3BAF5D6B8390" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest payable </link:label>
<link:label id="lab_us-gaap_InterestPayableCurrent_6638000EC2E6554ACF6B3BAF5D6B8390_label_en-US" xlink:label="lab_us-gaap_InterestPayableCurrent_6638000EC2E6554ACF6B3BAF5D6B8390" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Payable, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:label="loc_us-gaap_InterestPayableCurrent_6638000EC2E6554ACF6B3BAF5D6B8390" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestPayableCurrent_6638000EC2E6554ACF6B3BAF5D6B8390" xlink:to="lab_us-gaap_InterestPayableCurrent_6638000EC2E6554ACF6B3BAF5D6B8390" xlink:type="arc"/>
<link:label id="lab_us-gaap_TaxesPayableCurrent_47FFA0B78E274451B9BC3BAF5D6B4BD0_terseLabel_en-US" xlink:label="lab_us-gaap_TaxesPayableCurrent_47FFA0B78E274451B9BC3BAF5D6B4BD0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income taxes payable </link:label>
<link:label id="lab_us-gaap_TaxesPayableCurrent_47FFA0B78E274451B9BC3BAF5D6B4BD0_label_en-US" xlink:label="lab_us-gaap_TaxesPayableCurrent_47FFA0B78E274451B9BC3BAF5D6B4BD0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Taxes Payable, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TaxesPayableCurrent" xlink:label="loc_us-gaap_TaxesPayableCurrent_47FFA0B78E274451B9BC3BAF5D6B4BD0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TaxesPayableCurrent_47FFA0B78E274451B9BC3BAF5D6B4BD0" xlink:to="lab_us-gaap_TaxesPayableCurrent_47FFA0B78E274451B9BC3BAF5D6B4BD0" xlink:type="arc"/>
<link:label id="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_0C9EB497D507E77C71043BAF5D6BBD50_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_0C9EB497D507E77C71043BAF5D6BBD50" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued payroll and incentive compensation </link:label>
<link:label id="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_0C9EB497D507E77C71043BAF5D6BBD50_label_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_0C9EB497D507E77C71043BAF5D6BBD50" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Employee-related Liabilities, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_0C9EB497D507E77C71043BAF5D6BBD50" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_0C9EB497D507E77C71043BAF5D6BBD50" xlink:to="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_0C9EB497D507E77C71043BAF5D6BBD50" xlink:type="arc"/>
<link:label id="lab_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_B86A2CF5FDB244C269373BAF5D6B69AA_terseLabel_en-US" xlink:label="lab_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_B86A2CF5FDB244C269373BAF5D6B69AA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current liabilities associated with assets held for sale </link:label>
<link:label id="lab_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_B86A2CF5FDB244C269373BAF5D6B69AA_label_en-US" xlink:label="lab_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_B86A2CF5FDB244C269373BAF5D6B69AA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Total current liabilities associated with assets held for sale </link:label>
<link:label id="lab_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_B86A2CF5FDB244C269373BAF5D6B69AA_documentation_en-US" xlink:label="lab_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_B86A2CF5FDB244C269373BAF5D6B69AA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Total current liabilities associated with assets held for sale </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale" xlink:label="loc_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_B86A2CF5FDB244C269373BAF5D6B69AA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_B86A2CF5FDB244C269373BAF5D6B69AA" xlink:to="lab_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_B86A2CF5FDB244C269373BAF5D6B69AA" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherLiabilitiesCurrent_DD057214225D0924630F3BAF5D6B7A69_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesCurrent_DD057214225D0924630F3BAF5D6B7A69" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other current liabilities </link:label>
<link:label id="lab_us-gaap_OtherLiabilitiesCurrent_DD057214225D0924630F3BAF5D6B7A69_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesCurrent_DD057214225D0924630F3BAF5D6B7A69" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Liabilities, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_DD057214225D0924630F3BAF5D6B7A69" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_DD057214225D0924630F3BAF5D6B7A69" xlink:to="lab_us-gaap_OtherLiabilitiesCurrent_DD057214225D0924630F3BAF5D6B7A69" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesCurrent_02A90EBED8D697E7EDD43BAF5D6B3DEF_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_02A90EBED8D697E7EDD43BAF5D6B3DEF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total current liabilities </link:label>
<link:label id="lab_us-gaap_LiabilitiesCurrent_02A90EBED8D697E7EDD43BAF5D6B3DEF_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_02A90EBED8D697E7EDD43BAF5D6B3DEF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_02A90EBED8D697E7EDD43BAF5D6B3DEF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_02A90EBED8D697E7EDD43BAF5D6B3DEF" xlink:to="lab_us-gaap_LiabilitiesCurrent_02A90EBED8D697E7EDD43BAF5D6B3DEF" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesNoncurrentAbstract_CA9ADB0FA0D8A91BD2433BAF5D6BDCBB_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesNoncurrentAbstract_CA9ADB0FA0D8A91BD2433BAF5D6BDCBB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term liabilities </link:label>
<link:label id="lab_us-gaap_LiabilitiesNoncurrentAbstract_CA9ADB0FA0D8A91BD2433BAF5D6BDCBB_label_en-US" xlink:label="lab_us-gaap_LiabilitiesNoncurrentAbstract_CA9ADB0FA0D8A91BD2433BAF5D6BDCBB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Noncurrent [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_CA9ADB0FA0D8A91BD2433BAF5D6BDCBB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_CA9ADB0FA0D8A91BD2433BAF5D6BDCBB" xlink:to="lab_us-gaap_LiabilitiesNoncurrentAbstract_CA9ADB0FA0D8A91BD2433BAF5D6BDCBB" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtNoncurrent_C6EDD6D21057859555553BAF5D6C412B_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_C6EDD6D21057859555553BAF5D6C412B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term debt </link:label>
<link:label id="lab_us-gaap_LongTermDebtNoncurrent_C6EDD6D21057859555553BAF5D6C412B_label_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_C6EDD6D21057859555553BAF5D6C412B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Excluding Current Maturities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_C6EDD6D21057859555553BAF5D6C412B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtNoncurrent_C6EDD6D21057859555553BAF5D6C412B" xlink:to="lab_us-gaap_LongTermDebtNoncurrent_C6EDD6D21057859555553BAF5D6C412B" xlink:type="arc"/>
<link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_205A787A5C13BDA748B53BAF5D6CD5B9_terseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_205A787A5C13BDA748B53BAF5D6CD5B9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term pension and post employment benefit obligations </link:label>
<link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_205A787A5C13BDA748B53BAF5D6CD5B9_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_205A787A5C13BDA748B53BAF5D6CD5B9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liability, Defined Benefit Plan, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_205A787A5C13BDA748B53BAF5D6CD5B9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_205A787A5C13BDA748B53BAF5D6CD5B9" xlink:to="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_205A787A5C13BDA748B53BAF5D6CD5B9" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_DD2C41C9C6C5F7E560793BAF5D6CEFE9_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_DD2C41C9C6C5F7E560793BAF5D6CEFE9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred income taxes </link:label>
<link:label id="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_DD2C41C9C6C5F7E560793BAF5D6CEFE9_label_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_DD2C41C9C6C5F7E560793BAF5D6CEFE9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Tax Liabilities, Net, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_DD2C41C9C6C5F7E560793BAF5D6CEFE9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_DD2C41C9C6C5F7E560793BAF5D6CEFE9" xlink:to="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_DD2C41C9C6C5F7E560793BAF5D6CEFE9" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_3EA8C12BB14B1FDC1F043BAF5D6C762B_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_3EA8C12BB14B1FDC1F043BAF5D6C762B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other long-term liabilities </link:label>
<link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_3EA8C12BB14B1FDC1F043BAF5D6C762B_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_3EA8C12BB14B1FDC1F043BAF5D6C762B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Liabilities, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_3EA8C12BB14B1FDC1F043BAF5D6C762B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_3EA8C12BB14B1FDC1F043BAF5D6C762B" xlink:to="lab_us-gaap_OtherLiabilitiesNoncurrent_3EA8C12BB14B1FDC1F043BAF5D6C762B" xlink:type="arc"/>
<link:label id="lab_us-gaap_Liabilities_07237C9A8EAE58BF36393BAF5D6C350B_terseLabel_en-US" xlink:label="lab_us-gaap_Liabilities_07237C9A8EAE58BF36393BAF5D6C350B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total liabilities </link:label>
<link:label id="lab_us-gaap_Liabilities_07237C9A8EAE58BF36393BAF5D6C350B_label_en-US" xlink:label="lab_us-gaap_Liabilities_07237C9A8EAE58BF36393BAF5D6C350B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_07237C9A8EAE58BF36393BAF5D6C350B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_07237C9A8EAE58BF36393BAF5D6C350B" xlink:to="lab_us-gaap_Liabilities_07237C9A8EAE58BF36393BAF5D6C350B" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommitmentsAndContingencies_0654743679DDE47E3CA93BAF5D6CD752_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_0654743679DDE47E3CA93BAF5D6CD752" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commitments and contingencies (see Note 7) </link:label>
<link:label id="lab_us-gaap_CommitmentsAndContingencies_0654743679DDE47E3CA93BAF5D6CD752_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_0654743679DDE47E3CA93BAF5D6CD752" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commitments and Contingencies </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_0654743679DDE47E3CA93BAF5D6CD752" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingencies_0654743679DDE47E3CA93BAF5D6CD752" xlink:to="lab_us-gaap_CommitmentsAndContingencies_0654743679DDE47E3CA93BAF5D6CD752" xlink:type="arc"/>
<link:label id="lab_us-gaap_EquityAbstract_6870CD32A16F2348EC473BAF5D6CA08E_terseLabel_en-US" xlink:label="lab_us-gaap_EquityAbstract_6870CD32A16F2348EC473BAF5D6CA08E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deficit </link:label>
<link:label id="lab_us-gaap_EquityAbstract_6870CD32A16F2348EC473BAF5D6CA08E_label_en-US" xlink:label="lab_us-gaap_EquityAbstract_6870CD32A16F2348EC473BAF5D6CA08E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityAbstract" xlink:label="loc_us-gaap_EquityAbstract_6870CD32A16F2348EC473BAF5D6CA08E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityAbstract_6870CD32A16F2348EC473BAF5D6CA08E" xlink:to="lab_us-gaap_EquityAbstract_6870CD32A16F2348EC473BAF5D6CA08E" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockValue_90DA5D97F3C3085BA8E63BAF5D6C4E0D_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue_90DA5D97F3C3085BA8E63BAF5D6C4E0D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock—$0.01 par value; 300,000,000 shares authorized, 170,605,906 issued and 82,556,847 outstanding at March 31, 2018 and December 31, 2017 </link:label>
<link:label id="lab_us-gaap_CommonStockValue_90DA5D97F3C3085BA8E63BAF5D6C4E0D_label_en-US" xlink:label="lab_us-gaap_CommonStockValue_90DA5D97F3C3085BA8E63BAF5D6C4E0D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Value, Issued </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_90DA5D97F3C3085BA8E63BAF5D6C4E0D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockValue_90DA5D97F3C3085BA8E63BAF5D6C4E0D" xlink:to="lab_us-gaap_CommonStockValue_90DA5D97F3C3085BA8E63BAF5D6C4E0D" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_D03303DE5509F75BDE403BAF5D6C7CD6_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_D03303DE5509F75BDE403BAF5D6C7CD6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Paid-in capital </link:label>
<link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_D03303DE5509F75BDE403BAF5D6C7CD6_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_D03303DE5509F75BDE403BAF5D6C7CD6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Additional Paid in Capital, Common Stock </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_D03303DE5509F75BDE403BAF5D6C7CD6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalCommonStock_D03303DE5509F75BDE403BAF5D6C7CD6" xlink:to="lab_us-gaap_AdditionalPaidInCapitalCommonStock_D03303DE5509F75BDE403BAF5D6C7CD6" xlink:type="arc"/>
<link:label id="lab_us-gaap_TreasuryStockValue_52EDA14C2C9111D660553BAF5D6C3035_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockValue_52EDA14C2C9111D660553BAF5D6C3035" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Treasury stock, at cost—88,049,059 shares </link:label>
<link:label id="lab_us-gaap_TreasuryStockValue_52EDA14C2C9111D660553BAF5D6C3035_label_en-US" xlink:label="lab_us-gaap_TreasuryStockValue_52EDA14C2C9111D660553BAF5D6C3035" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Treasury Stock, Value </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="loc_us-gaap_TreasuryStockValue_52EDA14C2C9111D660553BAF5D6C3035" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TreasuryStockValue_52EDA14C2C9111D660553BAF5D6C3035" xlink:to="lab_us-gaap_TreasuryStockValue_52EDA14C2C9111D660553BAF5D6C3035" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_0B6D52AD3435E4C2C4513BAF5D6CBA1F_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_0B6D52AD3435E4C2C4513BAF5D6CBA1F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated other comprehensive income (loss) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_0B6D52AD3435E4C2C4513BAF5D6CBA1F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_0B6D52AD3435E4C2C4513BAF5D6CBA1F" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_0B6D52AD3435E4C2C4513BAF5D6CBA1F" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockholdersEquity_6B1B67DCBD981183D1EA3BAF5D6C2A96_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_6B1B67DCBD981183D1EA3BAF5D6C2A96" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total Hexion Inc. shareholder’s deficit </link:label>
<link:label id="lab_us-gaap_StockholdersEquity_6B1B67DCBD981183D1EA3BAF5D6C2A96_label_en-US" xlink:label="lab_us-gaap_StockholdersEquity_6B1B67DCBD981183D1EA3BAF5D6C2A96" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity Attributable to Parent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_6B1B67DCBD981183D1EA3BAF5D6C2A96" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquity_6B1B67DCBD981183D1EA3BAF5D6C2A96" xlink:to="lab_us-gaap_StockholdersEquity_6B1B67DCBD981183D1EA3BAF5D6C2A96" xlink:type="arc"/>
<link:label id="lab_us-gaap_MinorityInterest_CA01DEE654BE1F631BC53BAF5D6CCF9F_terseLabel_en-US" xlink:label="lab_us-gaap_MinorityInterest_CA01DEE654BE1F631BC53BAF5D6CCF9F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Noncontrolling interest </link:label>
<link:label id="lab_us-gaap_MinorityInterest_CA01DEE654BE1F631BC53BAF5D6CCF9F_label_en-US" xlink:label="lab_us-gaap_MinorityInterest_CA01DEE654BE1F631BC53BAF5D6CCF9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity Attributable to Noncontrolling Interest </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinorityInterest" xlink:label="loc_us-gaap_MinorityInterest_CA01DEE654BE1F631BC53BAF5D6CCF9F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MinorityInterest_CA01DEE654BE1F631BC53BAF5D6CCF9F" xlink:to="lab_us-gaap_MinorityInterest_CA01DEE654BE1F631BC53BAF5D6CCF9F" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_7102D1E957452249A6A33BAF5D6CC44F_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_7102D1E957452249A6A33BAF5D6CC44F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total deficit </link:label>
<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_7102D1E957452249A6A33BAF5D6CC44F_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_7102D1E957452249A6A33BAF5D6CC44F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_7102D1E957452249A6A33BAF5D6CC44F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_7102D1E957452249A6A33BAF5D6CC44F" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_7102D1E957452249A6A33BAF5D6CC44F" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_E817CA03F7155BC886E93BAF5D6CB616_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_E817CA03F7155BC886E93BAF5D6CB616" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total liabilities and deficit </link:label>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_E817CA03F7155BC886E93BAF5D6CB616_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_E817CA03F7155BC886E93BAF5D6CB616" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities and Equity </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_E817CA03F7155BC886E93BAF5D6CB616" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_E817CA03F7155BC886E93BAF5D6CB616" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquity_E817CA03F7155BC886E93BAF5D6CB616" xlink:type="arc"/>
<link:label id="lab_msc_FairValueAndFinancialInstrumentsAbstract_AD0BFAF2DE705A3125C10EBF9735C5D3_label_en-US" xlink:label="lab_msc_FairValueAndFinancialInstrumentsAbstract_AD0BFAF2DE705A3125C10EBF9735C5D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value and Financial Instruments [Abstract] </link:label>
<link:label id="lab_msc_FairValueAndFinancialInstrumentsAbstract_AD0BFAF2DE705A3125C10EBF9735C5D3_documentation_en-US" xlink:label="lab_msc_FairValueAndFinancialInstrumentsAbstract_AD0BFAF2DE705A3125C10EBF9735C5D3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Fair Value and Financial Instruments [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_FairValueAndFinancialInstrumentsAbstract" xlink:label="loc_msc_FairValueAndFinancialInstrumentsAbstract_AD0BFAF2DE705A3125C10EBF9735C5D3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_FairValueAndFinancialInstrumentsAbstract_AD0BFAF2DE705A3125C10EBF9735C5D3" xlink:to="lab_msc_FairValueAndFinancialInstrumentsAbstract_AD0BFAF2DE705A3125C10EBF9735C5D3" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueDisclosuresTextBlock_5A80A6F7DF465009915B0EBF9735B80E_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresTextBlock_5A80A6F7DF465009915B0EBF9735B80E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value Disclosures [Text Block] </link:label>
<link:label id="lab_us-gaap_FairValueDisclosuresTextBlock_5A80A6F7DF465009915B0EBF9735B80E_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresTextBlock_5A80A6F7DF465009915B0EBF9735B80E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Disclosures [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="loc_us-gaap_FairValueDisclosuresTextBlock_5A80A6F7DF465009915B0EBF9735B80E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueDisclosuresTextBlock_5A80A6F7DF465009915B0EBF9735B80E" xlink:to="lab_us-gaap_FairValueDisclosuresTextBlock_5A80A6F7DF465009915B0EBF9735B80E" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_1C2E7B328340F7466EDE0EBF9698DC2B_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_1C2E7B328340F7466EDE0EBF9698DC2B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] </link:label>
<link:label id="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_1C2E7B328340F7466EDE0EBF9698DC2B_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_1C2E7B328340F7466EDE0EBF9698DC2B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_1C2E7B328340F7466EDE0EBF9698DC2B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_1C2E7B328340F7466EDE0EBF9698DC2B" xlink:to="lab_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_1C2E7B328340F7466EDE0EBF9698DC2B" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_9821385B9D467924BAB03BAF5D4FCCC3_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_9821385B9D467924BAB03BAF5D4FCCC3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Cash Flows [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_9821385B9D467924BAB03BAF5D4FCCC3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_9821385B9D467924BAB03BAF5D4FCCC3" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_9821385B9D467924BAB03BAF5D4FCCC3" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_768FDFAD46B8FE2107F93BAF5D4F8393_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_768FDFAD46B8FE2107F93BAF5D4F8393" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows provided by (used in) operating activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_768FDFAD46B8FE2107F93BAF5D4F8393_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_768FDFAD46B8FE2107F93BAF5D4F8393" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_768FDFAD46B8FE2107F93BAF5D4F8393" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_768FDFAD46B8FE2107F93BAF5D4F8393" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_768FDFAD46B8FE2107F93BAF5D4F8393" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetIncomeLoss_43AB9EC0E397A40306D33BAF5D50E40F_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_43AB9EC0E397A40306D33BAF5D50E40F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net loss </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_43AB9EC0E397A40306D33BAF5D50E40F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_43AB9EC0E397A40306D33BAF5D50E40F" xlink:to="lab_us-gaap_NetIncomeLoss_43AB9EC0E397A40306D33BAF5D50E40F" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_501CED2B472760F194503BAF5D501E8D_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_501CED2B472760F194503BAF5D501E8D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Adjustments to reconcile net income to net cash used in operating activities: </link:label>
<link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_501CED2B472760F194503BAF5D501E8D_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_501CED2B472760F194503BAF5D501E8D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_501CED2B472760F194503BAF5D501E8D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_501CED2B472760F194503BAF5D501E8D" xlink:to="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_501CED2B472760F194503BAF5D501E8D" xlink:type="arc"/>
<link:label id="lab_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_37DE663B0BC4FE23343D3BAF5D502FD0_terseLabel_en-US" xlink:label="lab_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_37DE663B0BC4FE23343D3BAF5D502FD0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-cash asset impairments </link:label>
<link:label id="lab_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_37DE663B0BC4FE23343D3BAF5D502FD0_label_en-US" xlink:label="lab_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_37DE663B0BC4FE23343D3BAF5D502FD0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Non-cash asset impairments and accelerated depreciation </link:label>
<link:label id="lab_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_37DE663B0BC4FE23343D3BAF5D502FD0_documentation_en-US" xlink:label="lab_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_37DE663B0BC4FE23343D3BAF5D502FD0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Non-cash asset impairments and accelerated depreciation </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_NonCashAssetImpairmentsAndAcceleratedDepreciation" xlink:label="loc_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_37DE663B0BC4FE23343D3BAF5D502FD0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_37DE663B0BC4FE23343D3BAF5D502FD0" xlink:to="lab_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_37DE663B0BC4FE23343D3BAF5D502FD0" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_D6454B88A64A9C62F2B13BAF5D50F98A_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_D6454B88A64A9C62F2B13BAF5D50F98A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred tax expense </link:label>
<link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_D6454B88A64A9C62F2B13BAF5D50F98A_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_D6454B88A64A9C62F2B13BAF5D50F98A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Income Tax Expense (Benefit) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_D6454B88A64A9C62F2B13BAF5D50F98A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_D6454B88A64A9C62F2B13BAF5D50F98A" xlink:to="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_D6454B88A64A9C62F2B13BAF5D50F98A" xlink:type="arc"/>
<link:label id="lab_us-gaap_GainLossOnDispositionOfAssets1_B75764322211FC4907543BAF5D502F4F_terseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnDispositionOfAssets1_B75764322211FC4907543BAF5D502F4F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Gain on sale of assets </link:label>
<link:label id="lab_us-gaap_GainLossOnDispositionOfAssets1_B75764322211FC4907543BAF5D502F4F_label_en-US" xlink:label="lab_us-gaap_GainLossOnDispositionOfAssets1_B75764322211FC4907543BAF5D502F4F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gain (Loss) on Disposition of Assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets1" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_B75764322211FC4907543BAF5D502F4F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnDispositionOfAssets1_B75764322211FC4907543BAF5D502F4F" xlink:to="lab_us-gaap_GainLossOnDispositionOfAssets1_B75764322211FC4907543BAF5D502F4F" xlink:type="arc"/>
<link:label id="lab_us-gaap_AmortizationOfFinancingCosts_4C819DB302771D2A4E203BAF5D506CB7_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_4C819DB302771D2A4E203BAF5D506CB7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortization of deferred financing fees </link:label>
<link:label id="lab_us-gaap_AmortizationOfFinancingCosts_4C819DB302771D2A4E203BAF5D506CB7_label_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_4C819DB302771D2A4E203BAF5D506CB7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Amortization of Debt Issuance Costs </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AmortizationOfFinancingCosts" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_4C819DB302771D2A4E203BAF5D506CB7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfFinancingCosts_4C819DB302771D2A4E203BAF5D506CB7" xlink:to="lab_us-gaap_AmortizationOfFinancingCosts_4C819DB302771D2A4E203BAF5D506CB7" xlink:type="arc"/>
<link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_2B5DA6F9DACA6D89C32A3BAF5D50A72A_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_2B5DA6F9DACA6D89C32A3BAF5D50A72A" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Unrealized foreign currency losses </link:label>
<link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_2B5DA6F9DACA6D89C32A3BAF5D50A72A_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_2B5DA6F9DACA6D89C32A3BAF5D50A72A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Foreign Currency Transaction Gain (Loss), Unrealized </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossUnrealized" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_2B5DA6F9DACA6D89C32A3BAF5D50A72A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_2B5DA6F9DACA6D89C32A3BAF5D50A72A" xlink:to="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_2B5DA6F9DACA6D89C32A3BAF5D50A72A" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_577E805273146584FE373BAF5D506956_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_577E805273146584FE373BAF5D506956" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other non-cash adjustments </link:label>
<link:label id="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_577E805273146584FE373BAF5D506956_label_en-US" xlink:label="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_577E805273146584FE373BAF5D506956" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_577E805273146584FE373BAF5D506956" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_577E805273146584FE373BAF5D506956" xlink:to="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_577E805273146584FE373BAF5D506956" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract_26DCD4D616A1B5B23EB53BAF5D5058EF_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract_26DCD4D616A1B5B23EB53BAF5D5058EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net change in assets and liabilities: </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract_26DCD4D616A1B5B23EB53BAF5D5058EF_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract_26DCD4D616A1B5B23EB53BAF5D5058EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract_26DCD4D616A1B5B23EB53BAF5D5058EF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract_26DCD4D616A1B5B23EB53BAF5D5058EF" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract_26DCD4D616A1B5B23EB53BAF5D5058EF" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_87349713DB3459D2D6333BAF5D50567B_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_87349713DB3459D2D6333BAF5D50567B" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Accounts receivable </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_87349713DB3459D2D6333BAF5D50567B_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_87349713DB3459D2D6333BAF5D50567B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Accounts Receivable </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_87349713DB3459D2D6333BAF5D50567B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_87349713DB3459D2D6333BAF5D50567B" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_87349713DB3459D2D6333BAF5D50567B" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInInventories_F1F963029679452AC4103BAF5D50E7D8_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_F1F963029679452AC4103BAF5D50E7D8" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Inventories </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInInventories_F1F963029679452AC4103BAF5D50E7D8_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_F1F963029679452AC4103BAF5D50E7D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Inventories </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_F1F963029679452AC4103BAF5D50E7D8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInInventories_F1F963029679452AC4103BAF5D50E7D8" xlink:to="lab_us-gaap_IncreaseDecreaseInInventories_F1F963029679452AC4103BAF5D50E7D8" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_CC00E8D241A858D52AAD3BAF5D50CAEF_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_CC00E8D241A858D52AAD3BAF5D50CAEF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts payable </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_CC00E8D241A858D52AAD3BAF5D50CAEF_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_CC00E8D241A858D52AAD3BAF5D50CAEF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Accounts Payable </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_CC00E8D241A858D52AAD3BAF5D50CAEF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsPayable_CC00E8D241A858D52AAD3BAF5D50CAEF" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsPayable_CC00E8D241A858D52AAD3BAF5D50CAEF" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_83A5721AC042BB00C7ED3BAF5D508E19_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_83A5721AC042BB00C7ED3BAF5D508E19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income taxes payable </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_83A5721AC042BB00C7ED3BAF5D508E19_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_83A5721AC042BB00C7ED3BAF5D508E19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Income Taxes Payable </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_83A5721AC042BB00C7ED3BAF5D508E19" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_83A5721AC042BB00C7ED3BAF5D508E19" xlink:to="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_83A5721AC042BB00C7ED3BAF5D508E19" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_951AF60A0FC1763D37153BAF5D5077A5_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_951AF60A0FC1763D37153BAF5D5077A5" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Other assets, current and non-current </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_951AF60A0FC1763D37153BAF5D5077A5_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_951AF60A0FC1763D37153BAF5D5077A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Other Operating Assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_951AF60A0FC1763D37153BAF5D5077A5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_951AF60A0FC1763D37153BAF5D5077A5" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_951AF60A0FC1763D37153BAF5D5077A5" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1C9FB223C19B28225B863BAF5D51F13C_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1C9FB223C19B28225B863BAF5D51F13C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other liabilities, current and long-term </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1C9FB223C19B28225B863BAF5D51F13C_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1C9FB223C19B28225B863BAF5D51F13C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Other Operating Liabilities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1C9FB223C19B28225B863BAF5D51F13C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1C9FB223C19B28225B863BAF5D51F13C" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_1C9FB223C19B28225B863BAF5D51F13C" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_1045780C458F9084EB1A3BAF5D519D5F_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_1045780C458F9084EB1A3BAF5D519D5F" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash used in operating activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_1045780C458F9084EB1A3BAF5D519D5F_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_1045780C458F9084EB1A3BAF5D519D5F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1045780C458F9084EB1A3BAF5D519D5F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1045780C458F9084EB1A3BAF5D519D5F" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_1045780C458F9084EB1A3BAF5D519D5F" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_AF64E1C8B686671CBD733BAF5D51D296_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_AF64E1C8B686671CBD733BAF5D51D296" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows provided by (used in) investing activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_AF64E1C8B686671CBD733BAF5D51D296_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_AF64E1C8B686671CBD733BAF5D51D296" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_AF64E1C8B686671CBD733BAF5D51D296" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_AF64E1C8B686671CBD733BAF5D51D296" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_AF64E1C8B686671CBD733BAF5D51D296" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_B123BF4CCE19A437EC4E3BAF5D51F2A5_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_B123BF4CCE19A437EC4E3BAF5D51F2A5" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Capital expenditures </link:label>
<link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_B123BF4CCE19A437EC4E3BAF5D51F2A5_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_B123BF4CCE19A437EC4E3BAF5D51F2A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Property, Plant, and Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_B123BF4CCE19A437EC4E3BAF5D51F2A5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_B123BF4CCE19A437EC4E3BAF5D51F2A5" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_B123BF4CCE19A437EC4E3BAF5D51F2A5" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_6D26E426692144183FAB3BAF5D516DEA_netLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_6D26E426692144183FAB3BAF5D516DEA" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from sale of assets, net </link:label>
<link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_6D26E426692144183FAB3BAF5D516DEA_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_6D26E426692144183FAB3BAF5D516DEA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Sale of Property, Plant, and Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_6D26E426692144183FAB3BAF5D516DEA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_6D26E426692144183FAB3BAF5D516DEA" xlink:to="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_6D26E426692144183FAB3BAF5D516DEA" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_BFF1BA0A9DAEC687F62D3BAF5D518EEB_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_BFF1BA0A9DAEC687F62D3BAF5D518EEB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash (used in) provided by investing activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_BFF1BA0A9DAEC687F62D3BAF5D518EEB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_BFF1BA0A9DAEC687F62D3BAF5D518EEB" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_BFF1BA0A9DAEC687F62D3BAF5D518EEB" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_404C6732AAD216DB86E23BAF5D51FBF0_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_404C6732AAD216DB86E23BAF5D51FBF0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows provided by financing activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_404C6732AAD216DB86E23BAF5D51FBF0_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_404C6732AAD216DB86E23BAF5D51FBF0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_404C6732AAD216DB86E23BAF5D51FBF0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_404C6732AAD216DB86E23BAF5D51FBF0" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_404C6732AAD216DB86E23BAF5D51FBF0" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_769B8E10AD7817BE339B3BAF5D515BC3_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_769B8E10AD7817BE339B3BAF5D515BC3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net short-term debt (repayments) borrowings </link:label>
<link:label id="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_769B8E10AD7817BE339B3BAF5D515BC3_label_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_769B8E10AD7817BE339B3BAF5D515BC3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from (Repayments of) Short-term Debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_769B8E10AD7817BE339B3BAF5D515BC3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_769B8E10AD7817BE339B3BAF5D515BC3" xlink:to="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_769B8E10AD7817BE339B3BAF5D515BC3" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_FCCBDDFD5B8DC5CE48203BAF5D5146B7_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_FCCBDDFD5B8DC5CE48203BAF5D5146B7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Borrowings of long-term debt </link:label>
<link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_FCCBDDFD5B8DC5CE48203BAF5D5146B7_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_FCCBDDFD5B8DC5CE48203BAF5D5146B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Issuance of Long-term Debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_FCCBDDFD5B8DC5CE48203BAF5D5146B7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_FCCBDDFD5B8DC5CE48203BAF5D5146B7" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_FCCBDDFD5B8DC5CE48203BAF5D5146B7" xlink:type="arc"/>
<link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_61BEC5FC6D800CAD72473BAF5D510C45_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_61BEC5FC6D800CAD72473BAF5D510C45" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Repayments of long-term debt </link:label>
<link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_61BEC5FC6D800CAD72473BAF5D510C45_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_61BEC5FC6D800CAD72473BAF5D510C45" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Repayments of Long-term Debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_61BEC5FC6D800CAD72473BAF5D510C45" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfLongTermDebt_61BEC5FC6D800CAD72473BAF5D510C45" xlink:to="lab_us-gaap_RepaymentsOfLongTermDebt_61BEC5FC6D800CAD72473BAF5D510C45" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsOfFinancingCosts_CD2060921F29E690DB483BAF5D51AAFF_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfFinancingCosts_CD2060921F29E690DB483BAF5D51AAFF" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Long-term debt and credit facility financing fees </link:label>
<link:label id="lab_us-gaap_PaymentsOfFinancingCosts_CD2060921F29E690DB483BAF5D51AAFF_label_en-US" xlink:label="lab_us-gaap_PaymentsOfFinancingCosts_CD2060921F29E690DB483BAF5D51AAFF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments of Financing Costs </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_CD2060921F29E690DB483BAF5D51AAFF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfFinancingCosts_CD2060921F29E690DB483BAF5D51AAFF" xlink:to="lab_us-gaap_PaymentsOfFinancingCosts_CD2060921F29E690DB483BAF5D51AAFF" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_3CED0B7ADD410021008C3BAF5D516B2A_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_3CED0B7ADD410021008C3BAF5D516B2A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net cash provided by financing activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_3CED0B7ADD410021008C3BAF5D516B2A_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_3CED0B7ADD410021008C3BAF5D516B2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_3CED0B7ADD410021008C3BAF5D516B2A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_3CED0B7ADD410021008C3BAF5D516B2A" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_3CED0B7ADD410021008C3BAF5D516B2A" xlink:type="arc"/>
<link:label id="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C973B4460794BB2FD7003BAF5D51C797_terseLabel_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C973B4460794BB2FD7003BAF5D51C797" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Effect of exchange rates on cash and cash equivalents </link:label>
<link:label id="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C973B4460794BB2FD7003BAF5D51C797_label_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C973B4460794BB2FD7003BAF5D51C797" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C973B4460794BB2FD7003BAF5D51C797" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C973B4460794BB2FD7003BAF5D51C797" xlink:to="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_C973B4460794BB2FD7003BAF5D51C797" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_F44FECA1D407BD83FC603BAF5D519A40_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_F44FECA1D407BD83FC603BAF5D519A40" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Cash and cash equivalents at beginning of period </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_F44FECA1D407BD83FC603BAF5D519A40" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_F44FECA1D407BD83FC603BAF5D519A40" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_F44FECA1D407BD83FC603BAF5D519A40" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_E32005BC82F2CA3FF9033BAF5D51A9A3_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_E32005BC82F2CA3FF9033BAF5D51A9A3" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Cash and cash equivalents at end of period </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_E32005BC82F2CA3FF9033BAF5D51A9A3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_E32005BC82F2CA3FF9033BAF5D51A9A3" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_E32005BC82F2CA3FF9033BAF5D51A9A3" xlink:type="arc"/>
<link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_CA27309E5AF521192DB93BAF5D513F59_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_CA27309E5AF521192DB93BAF5D513F59" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Supplemental disclosures of cash flow information </link:label>
<link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_CA27309E5AF521192DB93BAF5D513F59_label_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_CA27309E5AF521192DB93BAF5D513F59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Supplemental Cash Flow Information [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_CA27309E5AF521192DB93BAF5D513F59" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_CA27309E5AF521192DB93BAF5D513F59" xlink:to="lab_us-gaap_SupplementalCashFlowInformationAbstract_CA27309E5AF521192DB93BAF5D513F59" xlink:type="arc"/>
<link:label id="lab_us-gaap_InterestPaidNet_0C376055C5FEC597E9613BAF5D5159C3_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPaidNet_0C376055C5FEC597E9613BAF5D5159C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest, net </link:label>
<link:label id="lab_us-gaap_InterestPaidNet_0C376055C5FEC597E9613BAF5D5159C3_label_en-US" xlink:label="lab_us-gaap_InterestPaidNet_0C376055C5FEC597E9613BAF5D5159C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Paid, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestPaidNet" xlink:label="loc_us-gaap_InterestPaidNet_0C376055C5FEC597E9613BAF5D5159C3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestPaidNet_0C376055C5FEC597E9613BAF5D5159C3" xlink:to="lab_us-gaap_InterestPaidNet_0C376055C5FEC597E9613BAF5D5159C3" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeTaxesPaidNet_0A93DD6C31D4ED2577BB3BAF5D526293_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaidNet_0A93DD6C31D4ED2577BB3BAF5D526293" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income taxes, net of cash refunds </link:label>
<link:label id="lab_us-gaap_IncomeTaxesPaidNet_0A93DD6C31D4ED2577BB3BAF5D526293_label_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaidNet_0A93DD6C31D4ED2577BB3BAF5D526293" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Taxes Paid, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxesPaidNet" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_0A93DD6C31D4ED2577BB3BAF5D526293" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxesPaidNet_0A93DD6C31D4ED2577BB3BAF5D526293" xlink:to="lab_us-gaap_IncomeTaxesPaidNet_0A93DD6C31D4ED2577BB3BAF5D526293" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_7EC9E5FE2475562E26090EBF9725A42F_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_7EC9E5FE2475562E26090EBF9725A42F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commitments and Contingencies Disclosure [Text Block] </link:label>
<link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_7EC9E5FE2475562E26090EBF9725A42F_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_7EC9E5FE2475562E26090EBF9725A42F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commitments and Contingencies Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_7EC9E5FE2475562E26090EBF9725A42F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_7EC9E5FE2475562E26090EBF9725A42F" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_7EC9E5FE2475562E26090EBF9725A42F" xlink:type="arc"/>
<link:label id="lab_msc_SegmentInformationAbstract_0EAB948F1BC4D16BBFE20EBF965ACFDD_label_en-US" xlink:label="lab_msc_SegmentInformationAbstract_0EAB948F1BC4D16BBFE20EBF965ACFDD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment Information [Abstract] </link:label>
<link:label id="lab_msc_SegmentInformationAbstract_0EAB948F1BC4D16BBFE20EBF965ACFDD_documentation_en-US" xlink:label="lab_msc_SegmentInformationAbstract_0EAB948F1BC4D16BBFE20EBF965ACFDD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Segment Information [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_SegmentInformationAbstract" xlink:label="loc_msc_SegmentInformationAbstract_0EAB948F1BC4D16BBFE20EBF965ACFDD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SegmentInformationAbstract_0EAB948F1BC4D16BBFE20EBF965ACFDD" xlink:to="lab_msc_SegmentInformationAbstract_0EAB948F1BC4D16BBFE20EBF965ACFDD" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementOfStockholdersEquityAbstract_BA3A66DDB8827B45FBBB2114066D3B05_label_en-US" xlink:label="lab_us-gaap_StatementOfStockholdersEquityAbstract_BA3A66DDB8827B45FBBB2114066D3B05" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Stockholders' Equity [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="loc_us-gaap_StatementOfStockholdersEquityAbstract_BA3A66DDB8827B45FBBB2114066D3B05" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfStockholdersEquityAbstract_BA3A66DDB8827B45FBBB2114066D3B05" xlink:to="lab_us-gaap_StatementOfStockholdersEquityAbstract_BA3A66DDB8827B45FBBB2114066D3B05" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementEquityComponentsAxis_60E20DA97AAD7EE2723A2114066D719B_verboseLabel_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_60E20DA97AAD7EE2723A2114066D719B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Statement, Equity Components [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_60E20DA97AAD7EE2723A2114066D719B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_60E20DA97AAD7EE2723A2114066D719B" xlink:to="lab_us-gaap_StatementEquityComponentsAxis_60E20DA97AAD7EE2723A2114066D719B" xlink:type="arc"/>
<link:label id="lab_us-gaap_EquityComponentDomain_BCD429EE26183E9963442114066D33CC_verboseLabel_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_BCD429EE26183E9963442114066D33CC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Total </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_BCD429EE26183E9963442114066D33CC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityComponentDomain_BCD429EE26183E9963442114066D33CC" xlink:to="lab_us-gaap_EquityComponentDomain_BCD429EE26183E9963442114066D33CC" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockMember_E1DBCF0B00EF8D1833672114066DFFD9_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockMember_E1DBCF0B00EF8D1833672114066DFFD9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common Stock [Member] </link:label>
<link:label id="lab_us-gaap_CommonStockMember_E1DBCF0B00EF8D1833672114066DFFD9_label_en-US" xlink:label="lab_us-gaap_CommonStockMember_E1DBCF0B00EF8D1833672114066DFFD9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_E1DBCF0B00EF8D1833672114066DFFD9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockMember_E1DBCF0B00EF8D1833672114066DFFD9" xlink:to="lab_us-gaap_CommonStockMember_E1DBCF0B00EF8D1833672114066DFFD9" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_B8155DA4B9A975D124782114066D2BD2_verboseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_B8155DA4B9A975D124782114066D2BD2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Paid-in Capital [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_B8155DA4B9A975D124782114066D2BD2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalMember_B8155DA4B9A975D124782114066D2BD2" xlink:to="lab_us-gaap_AdditionalPaidInCapitalMember_B8155DA4B9A975D124782114066D2BD2" xlink:type="arc"/>
<link:label id="lab_us-gaap_TreasuryStockMember_6E93DE2D156FF65439CD2114066D4F4B_terseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockMember_6E93DE2D156FF65439CD2114066D4F4B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Treasury Stock [Member] </link:label>
<link:label id="lab_us-gaap_TreasuryStockMember_6E93DE2D156FF65439CD2114066D4F4B_label_en-US" xlink:label="lab_us-gaap_TreasuryStockMember_6E93DE2D156FF65439CD2114066D4F4B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Treasury Stock [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TreasuryStockMember" xlink:label="loc_us-gaap_TreasuryStockMember_6E93DE2D156FF65439CD2114066D4F4B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TreasuryStockMember_6E93DE2D156FF65439CD2114066D4F4B" xlink:to="lab_us-gaap_TreasuryStockMember_6E93DE2D156FF65439CD2114066D4F4B" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_282AA55C852BAA00AF5D2114066D2F7A_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_282AA55C852BAA00AF5D2114066D2F7A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Other Comprehensive Income [Member] </link:label>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_282AA55C852BAA00AF5D2114066D2F7A_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_282AA55C852BAA00AF5D2114066D2F7A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> AOCI Attributable to Parent [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_282AA55C852BAA00AF5D2114066D2F7A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_282AA55C852BAA00AF5D2114066D2F7A" xlink:to="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_282AA55C852BAA00AF5D2114066D2F7A" xlink:type="arc"/>
<link:label id="lab_us-gaap_RetainedEarningsMember_26BAC060AB3D4F17DDB62114066DF55E_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember_26BAC060AB3D4F17DDB62114066DF55E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Deficit [Member] </link:label>
<link:label id="lab_us-gaap_RetainedEarningsMember_26BAC060AB3D4F17DDB62114066DF55E_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember_26BAC060AB3D4F17DDB62114066DF55E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retained Earnings [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_26BAC060AB3D4F17DDB62114066DF55E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetainedEarningsMember_26BAC060AB3D4F17DDB62114066DF55E" xlink:to="lab_us-gaap_RetainedEarningsMember_26BAC060AB3D4F17DDB62114066DF55E" xlink:type="arc"/>
<link:label id="lab_us-gaap_ParentMember_EAC4150CBE1F0EEB3CF92114066D748D_terseLabel_en-US" xlink:label="lab_us-gaap_ParentMember_EAC4150CBE1F0EEB3CF92114066D748D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Parent [Member] </link:label>
<link:label id="lab_us-gaap_ParentMember_EAC4150CBE1F0EEB3CF92114066D748D_label_en-US" xlink:label="lab_us-gaap_ParentMember_EAC4150CBE1F0EEB3CF92114066D748D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Parent [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ParentMember" xlink:label="loc_us-gaap_ParentMember_EAC4150CBE1F0EEB3CF92114066D748D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ParentMember_EAC4150CBE1F0EEB3CF92114066D748D" xlink:to="lab_us-gaap_ParentMember_EAC4150CBE1F0EEB3CF92114066D748D" xlink:type="arc"/>
<link:label id="lab_us-gaap_NoncontrollingInterestMember_95C0168E65B65F8FE6912114066DC1B1_terseLabel_en-US" xlink:label="lab_us-gaap_NoncontrollingInterestMember_95C0168E65B65F8FE6912114066DC1B1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Noncontrolling Interest [Member] </link:label>
<link:label id="lab_us-gaap_NoncontrollingInterestMember_95C0168E65B65F8FE6912114066DC1B1_label_en-US" xlink:label="lab_us-gaap_NoncontrollingInterestMember_95C0168E65B65F8FE6912114066DC1B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Noncontrolling Interest [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="loc_us-gaap_NoncontrollingInterestMember_95C0168E65B65F8FE6912114066DC1B1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NoncontrollingInterestMember_95C0168E65B65F8FE6912114066DC1B1" xlink:to="lab_us-gaap_NoncontrollingInterestMember_95C0168E65B65F8FE6912114066DC1B1" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_C376695B585C45BBE3EE2114066DA7C3_periodStartLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_C376695B585C45BBE3EE2114066DA7C3" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Balance </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_C376695B585C45BBE3EE2114066DA7C3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_C376695B585C45BBE3EE2114066DA7C3" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_C376695B585C45BBE3EE2114066DA7C3" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_C3F25B0E8CE47F7CFDBE2114066DCFA5_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_C3F25B0E8CE47F7CFDBE2114066DCFA5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Stockholders' Equity [Roll Forward] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_C3F25B0E8CE47F7CFDBE2114066DCFA5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_C3F25B0E8CE47F7CFDBE2114066DCFA5" xlink:to="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_C3F25B0E8CE47F7CFDBE2114066DCFA5" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_84386E9A745BDD5821342114066DAE25_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_84386E9A745BDD5821342114066DAE25" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other comprehensive income </link:label>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_84386E9A745BDD5821342114066DAE25_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_84386E9A745BDD5821342114066DAE25" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Net of Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_84386E9A745BDD5821342114066DAE25" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_84386E9A745BDD5821342114066DAE25" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_84386E9A745BDD5821342114066DAE25" xlink:type="arc"/>
<link:label id="lab_msc_CumulativeEffectofNewAccountingPrinciple_A17848BE9F1D258C979E2114066D4EA5_terseLabel_en-US" xlink:label="lab_msc_CumulativeEffectofNewAccountingPrinciple_A17848BE9F1D258C979E2114066D4EA5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Impact of change in accounting policy </link:label>
<link:label id="lab_msc_CumulativeEffectofNewAccountingPrinciple_A17848BE9F1D258C979E2114066D4EA5_label_en-US" xlink:label="lab_msc_CumulativeEffectofNewAccountingPrinciple_A17848BE9F1D258C979E2114066D4EA5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> CumulativeEffect ofNewAccountingPrinciple </link:label>
<link:label id="lab_msc_CumulativeEffectofNewAccountingPrinciple_A17848BE9F1D258C979E2114066D4EA5_documentation_en-US" xlink:label="lab_msc_CumulativeEffectofNewAccountingPrinciple_A17848BE9F1D258C979E2114066D4EA5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Cumulative Effect of New Accounting Principle in period of adoption. </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_CumulativeEffectofNewAccountingPrinciple" xlink:label="loc_msc_CumulativeEffectofNewAccountingPrinciple_A17848BE9F1D258C979E2114066D4EA5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_CumulativeEffectofNewAccountingPrinciple_A17848BE9F1D258C979E2114066D4EA5" xlink:to="lab_msc_CumulativeEffectofNewAccountingPrinciple_A17848BE9F1D258C979E2114066D4EA5" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_AFE728D83D5C0C95703A2114066D792E_periodEndLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_AFE728D83D5C0C95703A2114066D792E" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Balance </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_AFE728D83D5C0C95703A2114066D792E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_AFE728D83D5C0C95703A2114066D792E" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_AFE728D83D5C0C95703A2114066D792E" xlink:type="arc"/>
<link:label id="lab_msc_RestructuringandCostReductionProgramsAbstract_F42DDC63BD80609477303BAF5D1BDC54_label_en-US" xlink:label="lab_msc_RestructuringandCostReductionProgramsAbstract_F42DDC63BD80609477303BAF5D1BDC54" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring and Cost Reduction Programs [Abstract] </link:label>
<link:label id="lab_msc_RestructuringandCostReductionProgramsAbstract_F42DDC63BD80609477303BAF5D1BDC54_documentation_en-US" xlink:label="lab_msc_RestructuringandCostReductionProgramsAbstract_F42DDC63BD80609477303BAF5D1BDC54" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Restructuring and Cost Reduction Programs [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_RestructuringandCostReductionProgramsAbstract" xlink:label="loc_msc_RestructuringandCostReductionProgramsAbstract_F42DDC63BD80609477303BAF5D1BDC54" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_RestructuringandCostReductionProgramsAbstract_F42DDC63BD80609477303BAF5D1BDC54" xlink:to="lab_msc_RestructuringandCostReductionProgramsAbstract_F42DDC63BD80609477303BAF5D1BDC54" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestructuringAndRelatedCostExpectedCost1_5265A4860903439D27593BAF5D1C7FA0_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringAndRelatedCostExpectedCost1_5265A4860903439D27593BAF5D1C7FA0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restructuring and Related Cost, Expected Cost </link:label>
<link:label id="lab_us-gaap_RestructuringAndRelatedCostExpectedCost1_5265A4860903439D27593BAF5D1C7FA0_label_en-US" xlink:label="lab_us-gaap_RestructuringAndRelatedCostExpectedCost1_5265A4860903439D27593BAF5D1C7FA0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring and Related Cost, Expected Cost </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringAndRelatedCostExpectedCost1" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_5265A4860903439D27593BAF5D1C7FA0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_5265A4860903439D27593BAF5D1C7FA0" xlink:to="lab_us-gaap_RestructuringAndRelatedCostExpectedCost1_5265A4860903439D27593BAF5D1C7FA0" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestructuringReserve_4208919AF4DB7B95A0033BAF5D1C7FDF_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringReserve_4208919AF4DB7B95A0033BAF5D1C7FDF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restructuring Reserve </link:label>
<link:label id="lab_us-gaap_RestructuringReserve_4208919AF4DB7B95A0033BAF5D1C7FDF_label_en-US" xlink:label="lab_us-gaap_RestructuringReserve_4208919AF4DB7B95A0033BAF5D1C7FDF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring Reserve </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringReserve" xlink:label="loc_us-gaap_RestructuringReserve_4208919AF4DB7B95A0033BAF5D1C7FDF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringReserve_4208919AF4DB7B95A0033BAF5D1C7FDF" xlink:to="lab_us-gaap_RestructuringReserve_4208919AF4DB7B95A0033BAF5D1C7FDF" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestructuringReservePeriodIncreaseDecrease_197701A5E0C35CB8FC0F3BAF5D1C27BF_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringReservePeriodIncreaseDecrease_197701A5E0C35CB8FC0F3BAF5D1C27BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restructuring Reserve, Period Increase (Decrease) </link:label>
<link:label id="lab_us-gaap_RestructuringReservePeriodIncreaseDecrease_197701A5E0C35CB8FC0F3BAF5D1C27BF_label_en-US" xlink:label="lab_us-gaap_RestructuringReservePeriodIncreaseDecrease_197701A5E0C35CB8FC0F3BAF5D1C27BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring Reserve, Period Increase (Decrease) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringReservePeriodIncreaseDecrease" xlink:label="loc_us-gaap_RestructuringReservePeriodIncreaseDecrease_197701A5E0C35CB8FC0F3BAF5D1C27BF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringReservePeriodIncreaseDecrease_197701A5E0C35CB8FC0F3BAF5D1C27BF" xlink:to="lab_us-gaap_RestructuringReservePeriodIncreaseDecrease_197701A5E0C35CB8FC0F3BAF5D1C27BF" xlink:type="arc"/>
<link:label id="lab_msc_Restructuringexpense_8B386B824F7322CFED1D3BAF5D1C0215_terseLabel_en-US" xlink:label="lab_msc_Restructuringexpense_8B386B824F7322CFED1D3BAF5D1C0215" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restructuring expense </link:label>
<link:label id="lab_msc_Restructuringexpense_8B386B824F7322CFED1D3BAF5D1C0215_label_en-US" xlink:label="lab_msc_Restructuringexpense_8B386B824F7322CFED1D3BAF5D1C0215" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring expense </link:label>
<link:label id="lab_msc_Restructuringexpense_8B386B824F7322CFED1D3BAF5D1C0215_documentation_en-US" xlink:label="lab_msc_Restructuringexpense_8B386B824F7322CFED1D3BAF5D1C0215" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Restructuring expense </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_Restructuringexpense" xlink:label="loc_msc_Restructuringexpense_8B386B824F7322CFED1D3BAF5D1C0215" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Restructuringexpense_8B386B824F7322CFED1D3BAF5D1C0215" xlink:to="lab_msc_Restructuringexpense_8B386B824F7322CFED1D3BAF5D1C0215" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsForRestructuring_2701184D8EF56B1B473F3BAF5D1C7D04_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRestructuring_2701184D8EF56B1B473F3BAF5D1C7D04" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Payments for Restructuring </link:label>
<link:label id="lab_us-gaap_PaymentsForRestructuring_2701184D8EF56B1B473F3BAF5D1C7D04_label_en-US" xlink:label="lab_us-gaap_PaymentsForRestructuring_2701184D8EF56B1B473F3BAF5D1C7D04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments for Restructuring </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsForRestructuring" xlink:label="loc_us-gaap_PaymentsForRestructuring_2701184D8EF56B1B473F3BAF5D1C7D04" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRestructuring_2701184D8EF56B1B473F3BAF5D1C7D04" xlink:to="lab_us-gaap_PaymentsForRestructuring_2701184D8EF56B1B473F3BAF5D1C7D04" xlink:type="arc"/>
<link:label id="lab_msc_RestructuringReserveIncludedInAccountsPayable_1618747E57D5DAEF61723BAF5D1C4DC3_terseLabel_en-US" xlink:label="lab_msc_RestructuringReserveIncludedInAccountsPayable_1618747E57D5DAEF61723BAF5D1C4DC3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> RestructuringReserveIncludedInAccountsPayable </link:label>
<link:label id="lab_msc_RestructuringReserveIncludedInAccountsPayable_1618747E57D5DAEF61723BAF5D1C4DC3_label_en-US" xlink:label="lab_msc_RestructuringReserveIncludedInAccountsPayable_1618747E57D5DAEF61723BAF5D1C4DC3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> RestructuringReserveIncludedInAccountsPayable </link:label>
<link:label id="lab_msc_RestructuringReserveIncludedInAccountsPayable_1618747E57D5DAEF61723BAF5D1C4DC3_documentation_en-US" xlink:label="lab_msc_RestructuringReserveIncludedInAccountsPayable_1618747E57D5DAEF61723BAF5D1C4DC3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Restructuring Reserve payments for the period Included In Accounts Payable. </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_RestructuringReserveIncludedInAccountsPayable" xlink:label="loc_msc_RestructuringReserveIncludedInAccountsPayable_1618747E57D5DAEF61723BAF5D1C4DC3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_RestructuringReserveIncludedInAccountsPayable_1618747E57D5DAEF61723BAF5D1C4DC3" xlink:to="lab_msc_RestructuringReserveIncludedInAccountsPayable_1618747E57D5DAEF61723BAF5D1C4DC3" xlink:type="arc"/>
<link:label id="lab_msc_NorcoRestructuringandRelatedCostAcceleratedDepreciation_A644FCC0EA1879C2259B3BAF5D1CA80A_terseLabel_en-US" xlink:label="lab_msc_NorcoRestructuringandRelatedCostAcceleratedDepreciation_A644FCC0EA1879C2259B3BAF5D1CA80A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Norco Restructuring and Related Cost, Accelerated Depreciation </link:label>
<link:label id="lab_msc_NorcoRestructuringandRelatedCostAcceleratedDepreciation_A644FCC0EA1879C2259B3BAF5D1CA80A_label_en-US" xlink:label="lab_msc_NorcoRestructuringandRelatedCostAcceleratedDepreciation_A644FCC0EA1879C2259B3BAF5D1CA80A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Norco Restructuring and Related Cost, Accelerated Depreciation </link:label>
<link:label id="lab_msc_NorcoRestructuringandRelatedCostAcceleratedDepreciation_A644FCC0EA1879C2259B3BAF5D1CA80A_documentation_en-US" xlink:label="lab_msc_NorcoRestructuringandRelatedCostAcceleratedDepreciation_A644FCC0EA1879C2259B3BAF5D1CA80A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Norco Restructuring and Related Cost, Accelerated Depreciation </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_NorcoRestructuringandRelatedCostAcceleratedDepreciation" xlink:label="loc_msc_NorcoRestructuringandRelatedCostAcceleratedDepreciation_A644FCC0EA1879C2259B3BAF5D1CA80A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_NorcoRestructuringandRelatedCostAcceleratedDepreciation_A644FCC0EA1879C2259B3BAF5D1CA80A" xlink:to="lab_msc_NorcoRestructuringandRelatedCostAcceleratedDepreciation_A644FCC0EA1879C2259B3BAF5D1CA80A" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetRetirementObligation_AA5E42ED183711E369CB3BAF5D1C4EB6_terseLabel_en-US" xlink:label="lab_us-gaap_AssetRetirementObligation_AA5E42ED183711E369CB3BAF5D1C4EB6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Asset Retirement Obligation </link:label>
<link:label id="lab_us-gaap_AssetRetirementObligation_AA5E42ED183711E369CB3BAF5D1C4EB6_label_en-US" xlink:label="lab_us-gaap_AssetRetirementObligation_AA5E42ED183711E369CB3BAF5D1C4EB6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Asset Retirement Obligation </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetRetirementObligation" xlink:label="loc_us-gaap_AssetRetirementObligation_AA5E42ED183711E369CB3BAF5D1C4EB6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetRetirementObligation_AA5E42ED183711E369CB3BAF5D1C4EB6" xlink:to="lab_us-gaap_AssetRetirementObligation_AA5E42ED183711E369CB3BAF5D1C4EB6" xlink:type="arc"/>
<link:label id="lab_us-gaap_LossOnContractTermination_FB165D59C13E5BBB79833BAF5D1C5CE7_terseLabel_en-US" xlink:label="lab_us-gaap_LossOnContractTermination_FB165D59C13E5BBB79833BAF5D1C5CE7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loss on Contract Termination </link:label>
<link:label id="lab_us-gaap_LossOnContractTermination_FB165D59C13E5BBB79833BAF5D1C5CE7_label_en-US" xlink:label="lab_us-gaap_LossOnContractTermination_FB165D59C13E5BBB79833BAF5D1C5CE7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loss on Contract Termination </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossOnContractTermination" xlink:label="loc_us-gaap_LossOnContractTermination_FB165D59C13E5BBB79833BAF5D1C5CE7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossOnContractTermination_FB165D59C13E5BBB79833BAF5D1C5CE7" xlink:to="lab_us-gaap_LossOnContractTermination_FB165D59C13E5BBB79833BAF5D1C5CE7" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestructuringAndRelatedCostIncurredCost_27049E9F9E524F84DE043BAF5D1CF7A5_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringAndRelatedCostIncurredCost_27049E9F9E524F84DE043BAF5D1CF7A5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restructuring and Related Cost, Incurred Cost </link:label>
<link:label id="lab_us-gaap_RestructuringAndRelatedCostIncurredCost_27049E9F9E524F84DE043BAF5D1CF7A5_label_en-US" xlink:label="lab_us-gaap_RestructuringAndRelatedCostIncurredCost_27049E9F9E524F84DE043BAF5D1CF7A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring and Related Cost, Incurred Cost </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringAndRelatedCostIncurredCost" xlink:label="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_27049E9F9E524F84DE043BAF5D1CF7A5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_27049E9F9E524F84DE043BAF5D1CF7A5" xlink:to="lab_us-gaap_RestructuringAndRelatedCostIncurredCost_27049E9F9E524F84DE043BAF5D1CF7A5" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestructuringAndRelatedCostCostIncurredToDate1_B5EFFD863BA5133064773BAF5D1C8AF9_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringAndRelatedCostCostIncurredToDate1_B5EFFD863BA5133064773BAF5D1C8AF9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restructuring and Related Cost, Cost Incurred to Date </link:label>
<link:label id="lab_us-gaap_RestructuringAndRelatedCostCostIncurredToDate1_B5EFFD863BA5133064773BAF5D1C8AF9_label_en-US" xlink:label="lab_us-gaap_RestructuringAndRelatedCostCostIncurredToDate1_B5EFFD863BA5133064773BAF5D1C8AF9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring and Related Cost, Cost Incurred to Date </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringAndRelatedCostCostIncurredToDate1" xlink:label="loc_us-gaap_RestructuringAndRelatedCostCostIncurredToDate1_B5EFFD863BA5133064773BAF5D1C8AF9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestructuringAndRelatedCostCostIncurredToDate1_B5EFFD863BA5133064773BAF5D1C8AF9" xlink:to="lab_us-gaap_RestructuringAndRelatedCostCostIncurredToDate1_B5EFFD863BA5133064773BAF5D1C8AF9" xlink:type="arc"/>
<link:label id="lab_msc_ChangesInAccumulatedOtherComprehensiveIncomeTextBlock_21B2D744B810043D26E30EBF96A8E516_terseLabel_en-US" xlink:label="lab_msc_ChangesInAccumulatedOtherComprehensiveIncomeTextBlock_21B2D744B810043D26E30EBF96A8E516" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Changes in Accumulated Other Comprehensive Income [Text Block] </link:label>
<link:label id="lab_msc_ChangesInAccumulatedOtherComprehensiveIncomeTextBlock_21B2D744B810043D26E30EBF96A8E516_label_en-US" xlink:label="lab_msc_ChangesInAccumulatedOtherComprehensiveIncomeTextBlock_21B2D744B810043D26E30EBF96A8E516" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Changes in Accumulated Other Comprehensive Income [Text Block] </link:label>
<link:label id="lab_msc_ChangesInAccumulatedOtherComprehensiveIncomeTextBlock_21B2D744B810043D26E30EBF96A8E516_documentation_en-US" xlink:label="lab_msc_ChangesInAccumulatedOtherComprehensiveIncomeTextBlock_21B2D744B810043D26E30EBF96A8E516" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Changes in Accumulated Other Comprehensive Income [Text Block] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_ChangesInAccumulatedOtherComprehensiveIncomeTextBlock" xlink:label="loc_msc_ChangesInAccumulatedOtherComprehensiveIncomeTextBlock_21B2D744B810043D26E30EBF96A8E516" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_ChangesInAccumulatedOtherComprehensiveIncomeTextBlock_21B2D744B810043D26E30EBF96A8E516" xlink:to="lab_msc_ChangesInAccumulatedOtherComprehensiveIncomeTextBlock_21B2D744B810043D26E30EBF96A8E516" xlink:type="arc"/>
<link:label id="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_1FDDD3BAD34C1BC96A180EBF966A6A64_terseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_1FDDD3BAD34C1BC96A180EBF966A6A64" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Pension and Other Postretirement Benefits Disclosure [Text Block] </link:label>
<link:label id="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_1FDDD3BAD34C1BC96A180EBF966A6A64_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_1FDDD3BAD34C1BC96A180EBF966A6A64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Pension and Other Postretirement Benefits Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_1FDDD3BAD34C1BC96A180EBF966A6A64" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_1FDDD3BAD34C1BC96A180EBF966A6A64" xlink:to="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_1FDDD3BAD34C1BC96A180EBF966A6A64" xlink:type="arc"/>
<link:label id="lab_us-gaap_SignificantAccountingPoliciesTextBlock_B3CE3BF396AE9376AD3F0EBF9679C095_terseLabel_en-US" xlink:label="lab_us-gaap_SignificantAccountingPoliciesTextBlock_B3CE3BF396AE9376AD3F0EBF9679C095" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Significant Accounting Policies [Text Block] </link:label>
<link:label id="lab_us-gaap_SignificantAccountingPoliciesTextBlock_B3CE3BF396AE9376AD3F0EBF9679C095_label_en-US" xlink:label="lab_us-gaap_SignificantAccountingPoliciesTextBlock_B3CE3BF396AE9376AD3F0EBF9679C095" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Significant Accounting Policies [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SignificantAccountingPoliciesTextBlock" xlink:label="loc_us-gaap_SignificantAccountingPoliciesTextBlock_B3CE3BF396AE9376AD3F0EBF9679C095" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SignificantAccountingPoliciesTextBlock_B3CE3BF396AE9376AD3F0EBF9679C095" xlink:to="lab_us-gaap_SignificantAccountingPoliciesTextBlock_B3CE3BF396AE9376AD3F0EBF9679C095" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementGeographicalAxis_E4437629496A90D2013F17095B87C4CE_terseLabel_en-US" xlink:label="lab_us-gaap_StatementGeographicalAxis_E4437629496A90D2013F17095B87C4CE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Geographical [Axis] </link:label>
<link:label id="lab_us-gaap_StatementGeographicalAxis_E4437629496A90D2013F17095B87C4CE_label_en-US" xlink:label="lab_us-gaap_StatementGeographicalAxis_E4437629496A90D2013F17095B87C4CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Geographical [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementGeographicalAxis" xlink:label="loc_us-gaap_StatementGeographicalAxis_E4437629496A90D2013F17095B87C4CE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementGeographicalAxis_E4437629496A90D2013F17095B87C4CE" xlink:to="lab_us-gaap_StatementGeographicalAxis_E4437629496A90D2013F17095B87C4CE" xlink:type="arc"/>
<link:label id="lab_us-gaap_SegmentGeographicalDomain_D591EE875C80CE6B479D17095B871D3C_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentGeographicalDomain_D591EE875C80CE6B479D17095B871D3C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Geographical [Domain] </link:label>
<link:label id="lab_us-gaap_SegmentGeographicalDomain_D591EE875C80CE6B479D17095B871D3C_label_en-US" xlink:label="lab_us-gaap_SegmentGeographicalDomain_D591EE875C80CE6B479D17095B871D3C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Geographical [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="loc_us-gaap_SegmentGeographicalDomain_D591EE875C80CE6B479D17095B871D3C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentGeographicalDomain_D591EE875C80CE6B479D17095B871D3C" xlink:to="lab_us-gaap_SegmentGeographicalDomain_D591EE875C80CE6B479D17095B871D3C" xlink:type="arc"/>
<link:label id="lab_us-gaap_NorthAmericaMember_898D80B744791F5D7C9A17095BA799C3_terseLabel_en-US" xlink:label="lab_us-gaap_NorthAmericaMember_898D80B744791F5D7C9A17095BA799C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> North America [Member] </link:label>
<link:label id="lab_us-gaap_NorthAmericaMember_898D80B744791F5D7C9A17095BA799C3_label_en-US" xlink:label="lab_us-gaap_NorthAmericaMember_898D80B744791F5D7C9A17095BA799C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> North America [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NorthAmericaMember" xlink:label="loc_us-gaap_NorthAmericaMember_898D80B744791F5D7C9A17095BA799C3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NorthAmericaMember_898D80B744791F5D7C9A17095BA799C3" xlink:to="lab_us-gaap_NorthAmericaMember_898D80B744791F5D7C9A17095BA799C3" xlink:type="arc"/>
<link:label id="lab_us-gaap_EuropeMember_1BBAFA36EC374E2FF0CE170993D02DDA_terseLabel_en-US" xlink:label="lab_us-gaap_EuropeMember_1BBAFA36EC374E2FF0CE170993D02DDA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Europe [Member] </link:label>
<link:label id="lab_us-gaap_EuropeMember_1BBAFA36EC374E2FF0CE170993D02DDA_label_en-US" xlink:label="lab_us-gaap_EuropeMember_1BBAFA36EC374E2FF0CE170993D02DDA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Europe [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EuropeMember" xlink:label="loc_us-gaap_EuropeMember_1BBAFA36EC374E2FF0CE170993D02DDA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EuropeMember_1BBAFA36EC374E2FF0CE170993D02DDA" xlink:to="lab_us-gaap_EuropeMember_1BBAFA36EC374E2FF0CE170993D02DDA" xlink:type="arc"/>
<link:label id="lab_us-gaap_AsiaPacificMember_1A75F08CE66E204E10841709F89943C3_terseLabel_en-US" xlink:label="lab_us-gaap_AsiaPacificMember_1A75F08CE66E204E10841709F89943C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Asia Pacific [Member] </link:label>
<link:label id="lab_us-gaap_AsiaPacificMember_1A75F08CE66E204E10841709F89943C3_label_en-US" xlink:label="lab_us-gaap_AsiaPacificMember_1A75F08CE66E204E10841709F89943C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Asia Pacific [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AsiaPacificMember" xlink:label="loc_us-gaap_AsiaPacificMember_1A75F08CE66E204E10841709F89943C3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AsiaPacificMember_1A75F08CE66E204E10841709F89943C3" xlink:to="lab_us-gaap_AsiaPacificMember_1A75F08CE66E204E10841709F89943C3" xlink:type="arc"/>
<link:label id="lab_us-gaap_LatinAmericaMember_F84F17773EC58C125359170A705D554F_terseLabel_en-US" xlink:label="lab_us-gaap_LatinAmericaMember_F84F17773EC58C125359170A705D554F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Latin America [Member] </link:label>
<link:label id="lab_us-gaap_LatinAmericaMember_F84F17773EC58C125359170A705D554F_label_en-US" xlink:label="lab_us-gaap_LatinAmericaMember_F84F17773EC58C125359170A705D554F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Latin America [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LatinAmericaMember" xlink:label="loc_us-gaap_LatinAmericaMember_F84F17773EC58C125359170A705D554F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LatinAmericaMember_F84F17773EC58C125359170A705D554F" xlink:to="lab_us-gaap_LatinAmericaMember_F84F17773EC58C125359170A705D554F" xlink:type="arc"/>
<link:label id="lab_us-gaap_Revenues_B3DAF724B682CD33BDA61700C480E3A1_terseLabel_en-US" xlink:label="lab_us-gaap_Revenues_B3DAF724B682CD33BDA61700C480E3A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net Sales to Unaffiliated Customers </link:label>
<link:label id="lab_us-gaap_Revenues_B3DAF724B682CD33BDA61700C480E3A1_label_en-US" xlink:label="lab_us-gaap_Revenues_B3DAF724B682CD33BDA61700C480E3A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenues </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_B3DAF724B682CD33BDA61700C480E3A1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Revenues_B3DAF724B682CD33BDA61700C480E3A1" xlink:to="lab_us-gaap_Revenues_B3DAF724B682CD33BDA61700C480E3A1" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_592504031C39D68B74E90EBF9764B4EB_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_592504031C39D68B74E90EBF9764B4EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Pension Benefits and Non-Pension Postretirement Benefits Disclosures [Table] </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_592504031C39D68B74E90EBF9764B4EB_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_592504031C39D68B74E90EBF9764B4EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_592504031C39D68B74E90EBF9764B4EB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_592504031C39D68B74E90EBF9764B4EB" xlink:to="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_592504031C39D68B74E90EBF9764B4EB" xlink:type="arc"/>
<link:label id="lab_us-gaap_RetirementPlanTypeAxis_E03164F8749E075F63CD0EBF97647C40_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeAxis_E03164F8749E075F63CD0EBF97647C40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Retirement Plan Type [Axis] </link:label>
<link:label id="lab_us-gaap_RetirementPlanTypeAxis_E03164F8749E075F63CD0EBF97647C40_label_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeAxis_E03164F8749E075F63CD0EBF97647C40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retirement Plan Type [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_E03164F8749E075F63CD0EBF97647C40" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_E03164F8749E075F63CD0EBF97647C40" xlink:to="lab_us-gaap_RetirementPlanTypeAxis_E03164F8749E075F63CD0EBF97647C40" xlink:type="arc"/>
<link:label id="lab_us-gaap_RetirementPlanTypeDomain_EC3BFB6CC2B3B313983D0EBF9764C4AB_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeDomain_EC3BFB6CC2B3B313983D0EBF9764C4AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Retirement Plan Type [Domain] </link:label>
<link:label id="lab_us-gaap_RetirementPlanTypeDomain_EC3BFB6CC2B3B313983D0EBF9764C4AB_label_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeDomain_EC3BFB6CC2B3B313983D0EBF9764C4AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retirement Plan Type [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_EC3BFB6CC2B3B313983D0EBF9764C4AB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_EC3BFB6CC2B3B313983D0EBF9764C4AB" xlink:to="lab_us-gaap_RetirementPlanTypeDomain_EC3BFB6CC2B3B313983D0EBF9764C4AB" xlink:type="arc"/>
<link:label id="lab_us-gaap_PensionPlansDefinedBenefitMember_B96F3781219AC5E26A200EBF9764274C_terseLabel_en-US" xlink:label="lab_us-gaap_PensionPlansDefinedBenefitMember_B96F3781219AC5E26A200EBF9764274C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Pension Plan [Member] </link:label>
<link:label id="lab_us-gaap_PensionPlansDefinedBenefitMember_B96F3781219AC5E26A200EBF9764274C_label_en-US" xlink:label="lab_us-gaap_PensionPlansDefinedBenefitMember_B96F3781219AC5E26A200EBF9764274C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Pension Plan [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_B96F3781219AC5E26A200EBF9764274C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionPlansDefinedBenefitMember_B96F3781219AC5E26A200EBF9764274C" xlink:to="lab_us-gaap_PensionPlansDefinedBenefitMember_B96F3781219AC5E26A200EBF9764274C" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_608397188C64845A46A70EBF97645822_terseLabel_en-US" xlink:label="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_608397188C64845A46A70EBF97645822" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Postretirement Benefits Plan [Member] </link:label>
<link:label id="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_608397188C64845A46A70EBF97645822_label_en-US" xlink:label="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_608397188C64845A46A70EBF97645822" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Postretirement Benefits Plan [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_608397188C64845A46A70EBF97645822" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_608397188C64845A46A70EBF97645822" xlink:to="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_608397188C64845A46A70EBF97645822" xlink:type="arc"/>
<link:label id="lab_us-gaap_RetirementPlanSponsorLocationAxis_59A05347176ABC9486030EBF9764453F_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanSponsorLocationAxis_59A05347176ABC9486030EBF9764453F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Retirement Plan Sponsor Location [Axis] </link:label>
<link:label id="lab_us-gaap_RetirementPlanSponsorLocationAxis_59A05347176ABC9486030EBF9764453F_label_en-US" xlink:label="lab_us-gaap_RetirementPlanSponsorLocationAxis_59A05347176ABC9486030EBF9764453F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retirement Plan Sponsor Location [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_59A05347176ABC9486030EBF9764453F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_59A05347176ABC9486030EBF9764453F" xlink:to="lab_us-gaap_RetirementPlanSponsorLocationAxis_59A05347176ABC9486030EBF9764453F" xlink:type="arc"/>
<link:label id="lab_us-gaap_RetirementPlanSponsorLocationDomain_44ABDE94189FF2A4327E0EBF97647A28_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanSponsorLocationDomain_44ABDE94189FF2A4327E0EBF97647A28" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Retirement Plan Sponsor Location [Domain] </link:label>
<link:label id="lab_us-gaap_RetirementPlanSponsorLocationDomain_44ABDE94189FF2A4327E0EBF97647A28_label_en-US" xlink:label="lab_us-gaap_RetirementPlanSponsorLocationDomain_44ABDE94189FF2A4327E0EBF97647A28" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retirement Plan Sponsor Location [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_44ABDE94189FF2A4327E0EBF97647A28" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_44ABDE94189FF2A4327E0EBF97647A28" xlink:to="lab_us-gaap_RetirementPlanSponsorLocationDomain_44ABDE94189FF2A4327E0EBF97647A28" xlink:type="arc"/>
<link:label id="lab_country_US_2FEDF5AC9057F03375360EBF9764F3A9_terseLabel_en-US" xlink:label="lab_country_US_2FEDF5AC9057F03375360EBF9764F3A9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> UNITED STATES </link:label>
<link:label id="lab_country_US_2FEDF5AC9057F03375360EBF9764F3A9_label_en-US" xlink:label="lab_country_US_2FEDF5AC9057F03375360EBF9764F3A9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> UNITED STATES </link:label>
<link:loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="loc_country_US_2FEDF5AC9057F03375360EBF9764F3A9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_US_2FEDF5AC9057F03375360EBF9764F3A9" xlink:to="lab_country_US_2FEDF5AC9057F03375360EBF9764F3A9" xlink:type="arc"/>
<link:label id="lab_us-gaap_ForeignPlanMember_FC4300A64377273424E30EBF9764165A_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignPlanMember_FC4300A64377273424E30EBF9764165A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Foreign Plan [Member] </link:label>
<link:label id="lab_us-gaap_ForeignPlanMember_FC4300A64377273424E30EBF9764165A_label_en-US" xlink:label="lab_us-gaap_ForeignPlanMember_FC4300A64377273424E30EBF9764165A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Foreign Plan [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="loc_us-gaap_ForeignPlanMember_FC4300A64377273424E30EBF9764165A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignPlanMember_FC4300A64377273424E30EBF9764165A" xlink:to="lab_us-gaap_ForeignPlanMember_FC4300A64377273424E30EBF9764165A" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_6427C7F93D733B88E3830EBF9764A0B3_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_6427C7F93D733B88E3830EBF9764A0B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Pension Benefits and Non-Pension Postretirement Benefits Disclosures Table Text Block [Line Items] </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_6427C7F93D733B88E3830EBF9764A0B3_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_6427C7F93D733B88E3830EBF9764A0B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_6427C7F93D733B88E3830EBF9764A0B3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_6427C7F93D733B88E3830EBF9764A0B3" xlink:to="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_6427C7F93D733B88E3830EBF9764A0B3" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanServiceCost_A66F273F021C1BCF2AFC0EBF97646241_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanServiceCost_A66F273F021C1BCF2AFC0EBF97646241" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Service cost </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanServiceCost_A66F273F021C1BCF2AFC0EBF97646241_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanServiceCost_A66F273F021C1BCF2AFC0EBF97646241" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Service Cost </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_A66F273F021C1BCF2AFC0EBF97646241" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanServiceCost_A66F273F021C1BCF2AFC0EBF97646241" xlink:to="lab_us-gaap_DefinedBenefitPlanServiceCost_A66F273F021C1BCF2AFC0EBF97646241" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanInterestCost_0D25A9AF6211C07BCD700EBF9764258B_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanInterestCost_0D25A9AF6211C07BCD700EBF9764258B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest cost on projected benefit obligation </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanInterestCost_0D25A9AF6211C07BCD700EBF9764258B_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanInterestCost_0D25A9AF6211C07BCD700EBF9764258B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Interest Cost </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_0D25A9AF6211C07BCD700EBF9764258B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanInterestCost_0D25A9AF6211C07BCD700EBF9764258B" xlink:to="lab_us-gaap_DefinedBenefitPlanInterestCost_0D25A9AF6211C07BCD700EBF9764258B" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_AE1A21EF6FB10BD937D60EBF9764EB6F_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_AE1A21EF6FB10BD937D60EBF9764EB6F" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Expected return on assets </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_AE1A21EF6FB10BD937D60EBF9764EB6F_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_AE1A21EF6FB10BD937D60EBF9764EB6F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Expected Return (Loss) on Plan Assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_AE1A21EF6FB10BD937D60EBF9764EB6F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_AE1A21EF6FB10BD937D60EBF9764EB6F" xlink:to="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_AE1A21EF6FB10BD937D60EBF9764EB6F" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_D2049EE2F03973F01C780EBF9764FCDE_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_D2049EE2F03973F01C780EBF9764FCDE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortization of Prior Service benefit </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_D2049EE2F03973F01C780EBF9764FCDE_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_D2049EE2F03973F01C780EBF9764FCDE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Amortization of Prior Service Cost (Credit) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_D2049EE2F03973F01C780EBF9764FCDE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_D2049EE2F03973F01C780EBF9764FCDE" xlink:to="lab_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_D2049EE2F03973F01C780EBF9764FCDE" xlink:type="arc"/>
<link:label id="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_6C986CE7A530C880820B0EBF9764592E_totalLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_6C986CE7A530C880820B0EBF9764592E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net expense (benefit) </link:label>
<link:label id="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_6C986CE7A530C880820B0EBF9764592E_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_6C986CE7A530C880820B0EBF9764592E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Pension and Other Postretirement Benefits Cost (Reversal of Cost) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitExpense" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitExpense_6C986CE7A530C880820B0EBF9764592E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionAndOtherPostretirementBenefitExpense_6C986CE7A530C880820B0EBF9764592E" xlink:to="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_6C986CE7A530C880820B0EBF9764592E" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_65979BC25C32260349B60EBF96A82D6B_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_65979BC25C32260349B60EBF96A82D6B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value, by Balance Sheet Grouping [Table Text Block] </link:label>
<link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_65979BC25C32260349B60EBF96A82D6B_label_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_65979BC25C32260349B60EBF96A82D6B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, by Balance Sheet Grouping [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTextBlock" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTextBlock_65979BC25C32260349B60EBF96A82D6B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTextBlock_65979BC25C32260349B60EBF96A82D6B" xlink:to="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_65979BC25C32260349B60EBF96A82D6B" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationAbstract_A878087A43DD53CDA5AF0EBF9698A935_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationAbstract_A878087A43DD53CDA5AF0EBF9698A935" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationAbstract" xlink:label="loc_us-gaap_ShareBasedCompensationAbstract_A878087A43DD53CDA5AF0EBF9698A935" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationAbstract_A878087A43DD53CDA5AF0EBF9698A935" xlink:to="lab_us-gaap_ShareBasedCompensationAbstract_A878087A43DD53CDA5AF0EBF9698A935" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_952C4386001ACFBA519D0EBF9698D1C9_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_952C4386001ACFBA519D0EBF9698D1C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_952C4386001ACFBA519D0EBF9698D1C9_label_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_952C4386001ACFBA519D0EBF9698D1C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_952C4386001ACFBA519D0EBF9698D1C9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_952C4386001ACFBA519D0EBF9698D1C9" xlink:to="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_952C4386001ACFBA519D0EBF9698D1C9" xlink:type="arc"/>
<link:label id="lab_us-gaap_PlanNameAxis_D064310DA17B517122FC0EBF969898E2_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameAxis_D064310DA17B517122FC0EBF969898E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Plan Name [Axis] </link:label>
<link:label id="lab_us-gaap_PlanNameAxis_D064310DA17B517122FC0EBF969898E2_label_en-US" xlink:label="lab_us-gaap_PlanNameAxis_D064310DA17B517122FC0EBF969898E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Plan Name [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_D064310DA17B517122FC0EBF969898E2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PlanNameAxis_D064310DA17B517122FC0EBF969898E2" xlink:to="lab_us-gaap_PlanNameAxis_D064310DA17B517122FC0EBF969898E2" xlink:type="arc"/>
<link:label id="lab_us-gaap_PlanNameDomain_824D1D140AA58A43CFAB0EBF9698DA42_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameDomain_824D1D140AA58A43CFAB0EBF9698DA42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Plan Name [Domain] </link:label>
<link:label id="lab_us-gaap_PlanNameDomain_824D1D140AA58A43CFAB0EBF9698DA42_label_en-US" xlink:label="lab_us-gaap_PlanNameDomain_824D1D140AA58A43CFAB0EBF9698DA42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Plan Name [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_824D1D140AA58A43CFAB0EBF9698DA42" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PlanNameDomain_824D1D140AA58A43CFAB0EBF9698DA42" xlink:to="lab_us-gaap_PlanNameDomain_824D1D140AA58A43CFAB0EBF9698DA42" xlink:type="arc"/>
<link:label id="lab_us-gaap_AwardTypeAxis_8A400D21635692BA753F0EBF9698B0B9_terseLabel_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_8A400D21635692BA753F0EBF9698B0B9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award Type [Axis] </link:label>
<link:label id="lab_us-gaap_AwardTypeAxis_8A400D21635692BA753F0EBF9698B0B9_label_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_8A400D21635692BA753F0EBF9698B0B9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Award Type [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_8A400D21635692BA753F0EBF9698B0B9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AwardTypeAxis_8A400D21635692BA753F0EBF9698B0B9" xlink:to="lab_us-gaap_AwardTypeAxis_8A400D21635692BA753F0EBF9698B0B9" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_370D303D2B62F68A086E0EBF96986248_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_370D303D2B62F68A086E0EBF96986248" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award Type [Domain] </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_370D303D2B62F68A086E0EBF96986248_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_370D303D2B62F68A086E0EBF96986248" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Award [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_370D303D2B62F68A086E0EBF96986248" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_370D303D2B62F68A086E0EBF96986248" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_370D303D2B62F68A086E0EBF96986248" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3DCC01D9E994E6FE8CE30EBF969867CF_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3DCC01D9E994E6FE8CE30EBF969867CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award [Line Items] </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3DCC01D9E994E6FE8CE30EBF969867CF_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3DCC01D9E994E6FE8CE30EBF969867CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3DCC01D9E994E6FE8CE30EBF969867CF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3DCC01D9E994E6FE8CE30EBF969867CF" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3DCC01D9E994E6FE8CE30EBF969867CF" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_3F71C4DE975D81D026D93BAF5C0001B6_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_3F71C4DE975D81D026D93BAF5C0001B6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3F71C4DE975D81D026D93BAF5C0001B6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_3F71C4DE975D81D026D93BAF5C0001B6" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_3F71C4DE975D81D026D93BAF5C0001B6" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_A04E7833908DB9DC35003BAF5C00797F_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_A04E7833908DB9DC35003BAF5C00797F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows provided by (used in) investing activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_A04E7833908DB9DC35003BAF5C00797F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_A04E7833908DB9DC35003BAF5C00797F" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_A04E7833908DB9DC35003BAF5C00797F" xlink:type="arc"/>
<link:label id="lab_us-gaap_InterestPaidCapitalized_544183DF086CBF4367393BAF5C002C16_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_InterestPaidCapitalized_544183DF086CBF4367393BAF5C002C16" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Capitalized interest </link:label>
<link:label id="lab_us-gaap_InterestPaidCapitalized_544183DF086CBF4367393BAF5C002C16_label_en-US" xlink:label="lab_us-gaap_InterestPaidCapitalized_544183DF086CBF4367393BAF5C002C16" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Paid, Capitalized </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestPaidCapitalized" xlink:label="loc_us-gaap_InterestPaidCapitalized_544183DF086CBF4367393BAF5C002C16" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestPaidCapitalized_544183DF086CBF4367393BAF5C002C16" xlink:to="lab_us-gaap_InterestPaidCapitalized_544183DF086CBF4367393BAF5C002C16" xlink:type="arc"/>
<link:label id="lab_msc_Proceedsfromthedispositionsnet_170AB6798EE4D28B9A893BAF5C00B004_terseLabel_en-US" xlink:label="lab_msc_Proceedsfromthedispositionsnet_170AB6798EE4D28B9A893BAF5C00B004" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from dispositions, net </link:label>
<link:label id="lab_msc_Proceedsfromthedispositionsnet_170AB6798EE4D28B9A893BAF5C00B004_label_en-US" xlink:label="lab_msc_Proceedsfromthedispositionsnet_170AB6798EE4D28B9A893BAF5C00B004" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from the dispositions, net </link:label>
<link:label id="lab_msc_Proceedsfromthedispositionsnet_170AB6798EE4D28B9A893BAF5C00B004_documentation_en-US" xlink:label="lab_msc_Proceedsfromthedispositionsnet_170AB6798EE4D28B9A893BAF5C00B004" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Proceeds from the dispositions, net </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_Proceedsfromthedispositionsnet" xlink:label="loc_msc_Proceedsfromthedispositionsnet_170AB6798EE4D28B9A893BAF5C00B004" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Proceedsfromthedispositionsnet_170AB6798EE4D28B9A893BAF5C00B004" xlink:to="lab_msc_Proceedsfromthedispositionsnet_170AB6798EE4D28B9A893BAF5C00B004" xlink:type="arc"/>
<link:label id="lab_msc_Cashreceivedonbuyersnote_FCB2ABC4CDAECBC0B4AD3BAF5C00D693_negatedLabel_en-US" xlink:label="lab_msc_Cashreceivedonbuyersnote_FCB2ABC4CDAECBC0B4AD3BAF5C00D693" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Cash received on buyers note </link:label>
<link:label id="lab_msc_Cashreceivedonbuyersnote_FCB2ABC4CDAECBC0B4AD3BAF5C00D693_label_en-US" xlink:label="lab_msc_Cashreceivedonbuyersnote_FCB2ABC4CDAECBC0B4AD3BAF5C00D693" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash received on buyers note </link:label>
<link:label id="lab_msc_Cashreceivedonbuyersnote_FCB2ABC4CDAECBC0B4AD3BAF5C00D693_documentation_en-US" xlink:label="lab_msc_Cashreceivedonbuyersnote_FCB2ABC4CDAECBC0B4AD3BAF5C00D693" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Cash received on buyers note </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_Cashreceivedonbuyersnote" xlink:label="loc_msc_Cashreceivedonbuyersnote_FCB2ABC4CDAECBC0B4AD3BAF5C00D693" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Cashreceivedonbuyersnote_FCB2ABC4CDAECBC0B4AD3BAF5C00D693" xlink:to="lab_msc_Cashreceivedonbuyersnote_FCB2ABC4CDAECBC0B4AD3BAF5C00D693" xlink:type="arc"/>
<link:label id="lab_msc_Proceedsfromsaleofassets_AA6F041EBF1BA5C854E73BAF5C00337B_netLabel_en-US" xlink:label="lab_msc_Proceedsfromsaleofassets_AA6F041EBF1BA5C854E73BAF5C00337B" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US"> proceeds from sale of assets, net </link:label>
<link:label id="lab_msc_Proceedsfromsaleofassets_AA6F041EBF1BA5C854E73BAF5C00337B_label_en-US" xlink:label="lab_msc_Proceedsfromsaleofassets_AA6F041EBF1BA5C854E73BAF5C00337B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> proceeds from sale of assets </link:label>
<link:label id="lab_msc_Proceedsfromsaleofassets_AA6F041EBF1BA5C854E73BAF5C00337B_documentation_en-US" xlink:label="lab_msc_Proceedsfromsaleofassets_AA6F041EBF1BA5C854E73BAF5C00337B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> proceeds from sale of assets </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_Proceedsfromsaleofassets" xlink:label="loc_msc_Proceedsfromsaleofassets_AA6F041EBF1BA5C854E73BAF5C00337B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Proceedsfromsaleofassets_AA6F041EBF1BA5C854E73BAF5C00337B" xlink:to="lab_msc_Proceedsfromsaleofassets_AA6F041EBF1BA5C854E73BAF5C00337B" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInRestrictedCash_9E5E13CE0EE6FEAD0AE13BAF5C000BD9_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInRestrictedCash_9E5E13CE0EE6FEAD0AE13BAF5C000BD9" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Change in restricted cash </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInRestrictedCash" xlink:label="loc_us-gaap_IncreaseDecreaseInRestrictedCash_9E5E13CE0EE6FEAD0AE13BAF5C000BD9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInRestrictedCash_9E5E13CE0EE6FEAD0AE13BAF5C000BD9" xlink:to="lab_us-gaap_IncreaseDecreaseInRestrictedCash_9E5E13CE0EE6FEAD0AE13BAF5C000BD9" xlink:type="arc"/>
<link:label id="lab_msc_CapitalContributionToSubsidiary_561F543381617FF1531A3BAF5C003EE3_terseLabel_en-US" xlink:label="lab_msc_CapitalContributionToSubsidiary_561F543381617FF1531A3BAF5C003EE3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Capital contribution to subsidiary </link:label>
<link:label id="lab_msc_CapitalContributionToSubsidiary_561F543381617FF1531A3BAF5C003EE3_label_en-US" xlink:label="lab_msc_CapitalContributionToSubsidiary_561F543381617FF1531A3BAF5C003EE3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Capital contribution to subsidiary </link:label>
<link:label id="lab_msc_CapitalContributionToSubsidiary_561F543381617FF1531A3BAF5C003EE3_documentation_en-US" xlink:label="lab_msc_CapitalContributionToSubsidiary_561F543381617FF1531A3BAF5C003EE3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Capital contribution to subsidiary </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_CapitalContributionToSubsidiary" xlink:label="loc_msc_CapitalContributionToSubsidiary_561F543381617FF1531A3BAF5C003EE3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_CapitalContributionToSubsidiary_561F543381617FF1531A3BAF5C003EE3" xlink:to="lab_msc_CapitalContributionToSubsidiary_561F543381617FF1531A3BAF5C003EE3" xlink:type="arc"/>
<link:label id="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesDividendsOrInterest_88A580F4A8CD56B71C113BAF5C004255_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesDividendsOrInterest_88A580F4A8CD56B71C113BAF5C004255" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Funds remitted to unconsolidated affiliates, net </link:label>
<link:label id="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesDividendsOrInterest_88A580F4A8CD56B71C113BAF5C004255_label_en-US" xlink:label="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesDividendsOrInterest_88A580F4A8CD56B71C113BAF5C004255" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Investments in and Advances to Affiliates, Dividends or Interest </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesDividendsOrInterest" xlink:label="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesDividendsOrInterest_88A580F4A8CD56B71C113BAF5C004255" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesDividendsOrInterest_88A580F4A8CD56B71C113BAF5C004255" xlink:to="lab_us-gaap_InvestmentsInAndAdvancesToAffiliatesDividendsOrInterest_88A580F4A8CD56B71C113BAF5C004255" xlink:type="arc"/>
<link:label id="lab_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_FF321553D335A63C0B4C3BAF5C00FB0D_terseLabel_en-US" xlink:label="lab_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_FF321553D335A63C0B4C3BAF5C00FB0D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Return of capital from subsidiary from sales of accounts receivable </link:label>
<link:label id="lab_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_FF321553D335A63C0B4C3BAF5C00FB0D_label_en-US" xlink:label="lab_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_FF321553D335A63C0B4C3BAF5C00FB0D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Return of capital from subsidiary from sales of accounts receivable </link:label>
<link:label id="lab_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_FF321553D335A63C0B4C3BAF5C00FB0D_documentation_en-US" xlink:label="lab_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_FF321553D335A63C0B4C3BAF5C00FB0D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Return of capital from subsidiary from sales of accounts receivable </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable" xlink:label="loc_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_FF321553D335A63C0B4C3BAF5C00FB0D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_FF321553D335A63C0B4C3BAF5C00FB0D" xlink:to="lab_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_FF321553D335A63C0B4C3BAF5C00FB0D" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_890F68C785955365521C3BAF5C007B43_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_890F68C785955365521C3BAF5C007B43" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows (used in) provided by financing activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_890F68C785955365521C3BAF5C007B43" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_890F68C785955365521C3BAF5C007B43" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_890F68C785955365521C3BAF5C007B43" xlink:type="arc"/>
<link:label id="lab_msc_NetIntercompanyLoanBorrowingsRepayments_2A57AC630977C28A528B3BAF5C00A236_terseLabel_en-US" xlink:label="lab_msc_NetIntercompanyLoanBorrowingsRepayments_2A57AC630977C28A528B3BAF5C00A236" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net Intercompany Loan Borrowings (Repayments) </link:label>
<link:label id="lab_msc_NetIntercompanyLoanBorrowingsRepayments_2A57AC630977C28A528B3BAF5C00A236_label_en-US" xlink:label="lab_msc_NetIntercompanyLoanBorrowingsRepayments_2A57AC630977C28A528B3BAF5C00A236" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Intercompany Loan Borrowings (Repayments) </link:label>
<link:label id="lab_msc_NetIntercompanyLoanBorrowingsRepayments_2A57AC630977C28A528B3BAF5C00A236_documentation_en-US" xlink:label="lab_msc_NetIntercompanyLoanBorrowingsRepayments_2A57AC630977C28A528B3BAF5C00A236" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Net Intercompany Loan Borrowings (Repayments) </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_NetIntercompanyLoanBorrowingsRepayments" xlink:label="loc_msc_NetIntercompanyLoanBorrowingsRepayments_2A57AC630977C28A528B3BAF5C00A236" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_NetIntercompanyLoanBorrowingsRepayments_2A57AC630977C28A528B3BAF5C00A236" xlink:to="lab_msc_NetIntercompanyLoanBorrowingsRepayments_2A57AC630977C28A528B3BAF5C00A236" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromContributionsFromParent_FA486E4EF44A181425E43BAF5C009A4F_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromContributionsFromParent_FA486E4EF44A181425E43BAF5C009A4F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Capital contribution from parent </link:label>
<link:label id="lab_us-gaap_ProceedsFromContributionsFromParent_FA486E4EF44A181425E43BAF5C009A4F_label_en-US" xlink:label="lab_us-gaap_ProceedsFromContributionsFromParent_FA486E4EF44A181425E43BAF5C009A4F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Contributions from Parent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromContributionsFromParent" xlink:label="loc_us-gaap_ProceedsFromContributionsFromParent_FA486E4EF44A181425E43BAF5C009A4F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromContributionsFromParent_FA486E4EF44A181425E43BAF5C009A4F" xlink:to="lab_us-gaap_ProceedsFromContributionsFromParent_FA486E4EF44A181425E43BAF5C009A4F" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsOfFinancingCosts_B1CB8DF35F4B045AF24C3BAF5C00D7BF_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfFinancingCosts_B1CB8DF35F4B045AF24C3BAF5C00D7BF" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Long-term debt and credit facility financing fees </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_B1CB8DF35F4B045AF24C3BAF5C00D7BF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfFinancingCosts_B1CB8DF35F4B045AF24C3BAF5C00D7BF" xlink:to="lab_us-gaap_PaymentsOfFinancingCosts_B1CB8DF35F4B045AF24C3BAF5C00D7BF" xlink:type="arc"/>
<link:label id="lab_msc_ReturnOfCapitalToParentFromSalesOfAccountsReceivable_3037CD338A515690A5103BAF5C00AAF2_terseLabel_en-US" xlink:label="lab_msc_ReturnOfCapitalToParentFromSalesOfAccountsReceivable_3037CD338A515690A5103BAF5C00AAF2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Return of capital to parent from sales of accounts receivable </link:label>
<link:label id="lab_msc_ReturnOfCapitalToParentFromSalesOfAccountsReceivable_3037CD338A515690A5103BAF5C00AAF2_label_en-US" xlink:label="lab_msc_ReturnOfCapitalToParentFromSalesOfAccountsReceivable_3037CD338A515690A5103BAF5C00AAF2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Return of capital to parent from sales of accounts receivable </link:label>
<link:label id="lab_msc_ReturnOfCapitalToParentFromSalesOfAccountsReceivable_3037CD338A515690A5103BAF5C00AAF2_documentation_en-US" xlink:label="lab_msc_ReturnOfCapitalToParentFromSalesOfAccountsReceivable_3037CD338A515690A5103BAF5C00AAF2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Return of capital to parent from sales of accounts receivable </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_ReturnOfCapitalToParentFromSalesOfAccountsReceivable" xlink:label="loc_msc_ReturnOfCapitalToParentFromSalesOfAccountsReceivable_3037CD338A515690A5103BAF5C00AAF2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_ReturnOfCapitalToParentFromSalesOfAccountsReceivable_3037CD338A515690A5103BAF5C00AAF2" xlink:to="lab_msc_ReturnOfCapitalToParentFromSalesOfAccountsReceivable_3037CD338A515690A5103BAF5C00AAF2" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_5D391C35DA60BB57ABF23BAF5C00D919_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_5D391C35DA60BB57ABF23BAF5C00D919" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Common stock dividends paid </link:label>
<link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_5D391C35DA60BB57ABF23BAF5C00D919_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_5D391C35DA60BB57ABF23BAF5C00D919" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments of Ordinary Dividends, Common Stock </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_5D391C35DA60BB57ABF23BAF5C00D919" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfDividendsCommonStock_5D391C35DA60BB57ABF23BAF5C00D919" xlink:to="lab_us-gaap_PaymentsOfDividendsCommonStock_5D391C35DA60BB57ABF23BAF5C00D919" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_F5005E86370CB18044EA3BAF5C00A163_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_F5005E86370CB18044EA3BAF5C00A163" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash used in financing activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_F5005E86370CB18044EA3BAF5C00A163" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_F5005E86370CB18044EA3BAF5C00A163" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_F5005E86370CB18044EA3BAF5C00A163" xlink:type="arc"/>
<link:label id="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_C07EBB0A8F50BCC275663BAF5C009D8C_terseLabel_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_C07EBB0A8F50BCC275663BAF5C009D8C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Effect of Exchange Rate on Cash and Cash Equivalents </link:label>
<link:label id="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_C07EBB0A8F50BCC275663BAF5C009D8C_label_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_C07EBB0A8F50BCC275663BAF5C009D8C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effect of Exchange Rate on Cash and Cash Equivalents </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_C07EBB0A8F50BCC275663BAF5C009D8C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_C07EBB0A8F50BCC275663BAF5C009D8C" xlink:to="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_C07EBB0A8F50BCC275663BAF5C009D8C" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_4FD6B1D98F867EE9FC293BAF5C0049C3_totalLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_4FD6B1D98F867EE9FC293BAF5C0049C3" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Increase (decrease) in cash and cash equivalents </link:label>
<link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_4FD6B1D98F867EE9FC293BAF5C0049C3_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_4FD6B1D98F867EE9FC293BAF5C0049C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, Period Increase (Decrease) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_4FD6B1D98F867EE9FC293BAF5C0049C3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_4FD6B1D98F867EE9FC293BAF5C0049C3" xlink:to="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_4FD6B1D98F867EE9FC293BAF5C0049C3" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountsReceivableNet_1CBEB1FFE9AE50AF982C3BAF5C1F2379_verboseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNet_1CBEB1FFE9AE50AF982C3BAF5C1F2379" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Accounts receivable, net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsReceivableNet" xlink:label="loc_us-gaap_AccountsReceivableNet_1CBEB1FFE9AE50AF982C3BAF5C1F2379" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNet_1CBEB1FFE9AE50AF982C3BAF5C1F2379" xlink:to="lab_us-gaap_AccountsReceivableNet_1CBEB1FFE9AE50AF982C3BAF5C1F2379" xlink:type="arc"/>
<link:label id="lab_msc_IntercompanyAccountsReceivable_327D0A8EBF1CF266EB323BAF5C1F6B28_terseLabel_en-US" xlink:label="lab_msc_IntercompanyAccountsReceivable_327D0A8EBF1CF266EB323BAF5C1F6B28" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intercompany accounts receivable </link:label>
<link:label id="lab_msc_IntercompanyAccountsReceivable_327D0A8EBF1CF266EB323BAF5C1F6B28_label_en-US" xlink:label="lab_msc_IntercompanyAccountsReceivable_327D0A8EBF1CF266EB323BAF5C1F6B28" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intercompany accounts receivable </link:label>
<link:label id="lab_msc_IntercompanyAccountsReceivable_327D0A8EBF1CF266EB323BAF5C1F6B28_documentation_en-US" xlink:label="lab_msc_IntercompanyAccountsReceivable_327D0A8EBF1CF266EB323BAF5C1F6B28" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Intercompany accounts receivable </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_IntercompanyAccountsReceivable" xlink:label="loc_msc_IntercompanyAccountsReceivable_327D0A8EBF1CF266EB323BAF5C1F6B28" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyAccountsReceivable_327D0A8EBF1CF266EB323BAF5C1F6B28" xlink:to="lab_msc_IntercompanyAccountsReceivable_327D0A8EBF1CF266EB323BAF5C1F6B28" xlink:type="arc"/>
<link:label id="lab_msc_IntercompanyLoansReceivableCurrentPortion_58F3454D269687DC40923BAF5C1F7BDD_terseLabel_en-US" xlink:label="lab_msc_IntercompanyLoansReceivableCurrentPortion_58F3454D269687DC40923BAF5C1F7BDD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intercompany loans receivable - current portion </link:label>
<link:label id="lab_msc_IntercompanyLoansReceivableCurrentPortion_58F3454D269687DC40923BAF5C1F7BDD_label_en-US" xlink:label="lab_msc_IntercompanyLoansReceivableCurrentPortion_58F3454D269687DC40923BAF5C1F7BDD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intercompany loans receivable - current portion </link:label>
<link:label id="lab_msc_IntercompanyLoansReceivableCurrentPortion_58F3454D269687DC40923BAF5C1F7BDD_documentation_en-US" xlink:label="lab_msc_IntercompanyLoansReceivableCurrentPortion_58F3454D269687DC40923BAF5C1F7BDD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Intercompany loans receivable - current </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_IntercompanyLoansReceivableCurrentPortion" xlink:label="loc_msc_IntercompanyLoansReceivableCurrentPortion_58F3454D269687DC40923BAF5C1F7BDD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyLoansReceivableCurrentPortion_58F3454D269687DC40923BAF5C1F7BDD" xlink:to="lab_msc_IntercompanyLoansReceivableCurrentPortion_58F3454D269687DC40923BAF5C1F7BDD" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetsCurrent_F77269FF4A80798CBB8D3BAF5C1FB2C8_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_F77269FF4A80798CBB8D3BAF5C1FB2C8" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total current assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_F77269FF4A80798CBB8D3BAF5C1FB2C8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrent_F77269FF4A80798CBB8D3BAF5C1FB2C8" xlink:to="lab_us-gaap_AssetsCurrent_F77269FF4A80798CBB8D3BAF5C1FB2C8" xlink:type="arc"/>
<link:label id="lab_msc_IntercompanyLoansReceivable_6EBA9C16ED68483145363BAF5C1FCE4C_terseLabel_en-US" xlink:label="lab_msc_IntercompanyLoansReceivable_6EBA9C16ED68483145363BAF5C1FCE4C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intercompany loans receivable </link:label>
<link:label id="lab_msc_IntercompanyLoansReceivable_6EBA9C16ED68483145363BAF5C1FCE4C_label_en-US" xlink:label="lab_msc_IntercompanyLoansReceivable_6EBA9C16ED68483145363BAF5C1FCE4C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intercompany loans receivable </link:label>
<link:label id="lab_msc_IntercompanyLoansReceivable_6EBA9C16ED68483145363BAF5C1FCE4C_documentation_en-US" xlink:label="lab_msc_IntercompanyLoansReceivable_6EBA9C16ED68483145363BAF5C1FCE4C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Intercompany loans receivable </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_IntercompanyLoansReceivable" xlink:label="loc_msc_IntercompanyLoansReceivable_6EBA9C16ED68483145363BAF5C1FCE4C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyLoansReceivable_6EBA9C16ED68483145363BAF5C1FCE4C" xlink:to="lab_msc_IntercompanyLoansReceivable_6EBA9C16ED68483145363BAF5C1FCE4C" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_EA59CCBF7EDA654638353BAF5C1F889D_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_EA59CCBF7EDA654638353BAF5C1F889D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_EA59CCBF7EDA654638353BAF5C1F889D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_EA59CCBF7EDA654638353BAF5C1F889D" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_EA59CCBF7EDA654638353BAF5C1F889D" xlink:type="arc"/>
<link:label id="lab_us-gaap_Assets_0835F65BBDC018A8C2B93BAF5C1F35A8_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_0835F65BBDC018A8C2B93BAF5C1F35A8" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_0835F65BBDC018A8C2B93BAF5C1F35A8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_0835F65BBDC018A8C2B93BAF5C1F35A8" xlink:to="lab_us-gaap_Assets_0835F65BBDC018A8C2B93BAF5C1F35A8" xlink:type="arc"/>
<link:label id="lab_msc_IntercompanyAccountsPayable_81E85336B604F2D107C63BAF5C1F919F_terseLabel_en-US" xlink:label="lab_msc_IntercompanyAccountsPayable_81E85336B604F2D107C63BAF5C1F919F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intercompany accounts payable </link:label>
<link:label id="lab_msc_IntercompanyAccountsPayable_81E85336B604F2D107C63BAF5C1F919F_label_en-US" xlink:label="lab_msc_IntercompanyAccountsPayable_81E85336B604F2D107C63BAF5C1F919F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intercompany accounts payable </link:label>
<link:label id="lab_msc_IntercompanyAccountsPayable_81E85336B604F2D107C63BAF5C1F919F_documentation_en-US" xlink:label="lab_msc_IntercompanyAccountsPayable_81E85336B604F2D107C63BAF5C1F919F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Intercompany accounts payable </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_IntercompanyAccountsPayable" xlink:label="loc_msc_IntercompanyAccountsPayable_81E85336B604F2D107C63BAF5C1F919F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyAccountsPayable_81E85336B604F2D107C63BAF5C1F919F" xlink:to="lab_msc_IntercompanyAccountsPayable_81E85336B604F2D107C63BAF5C1F919F" xlink:type="arc"/>
<link:label id="lab_msc_IntercompanyLoansPayableWithinOneYear_91A8DA5BE04DC5D305253BAF5C1FC8DC_terseLabel_en-US" xlink:label="lab_msc_IntercompanyLoansPayableWithinOneYear_91A8DA5BE04DC5D305253BAF5C1FC8DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intercompany loans payable within one year </link:label>
<link:label id="lab_msc_IntercompanyLoansPayableWithinOneYear_91A8DA5BE04DC5D305253BAF5C1FC8DC_label_en-US" xlink:label="lab_msc_IntercompanyLoansPayableWithinOneYear_91A8DA5BE04DC5D305253BAF5C1FC8DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intercompany loans payable within one year </link:label>
<link:label id="lab_msc_IntercompanyLoansPayableWithinOneYear_91A8DA5BE04DC5D305253BAF5C1FC8DC_documentation_en-US" xlink:label="lab_msc_IntercompanyLoansPayableWithinOneYear_91A8DA5BE04DC5D305253BAF5C1FC8DC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Intercompany loans payable within one year </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_IntercompanyLoansPayableWithinOneYear" xlink:label="loc_msc_IntercompanyLoansPayableWithinOneYear_91A8DA5BE04DC5D305253BAF5C1FC8DC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyLoansPayableWithinOneYear_91A8DA5BE04DC5D305253BAF5C1FC8DC" xlink:to="lab_msc_IntercompanyLoansPayableWithinOneYear_91A8DA5BE04DC5D305253BAF5C1FC8DC" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesCurrent_59199711524B42F0DCAA3BAF5C1FE18B_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_59199711524B42F0DCAA3BAF5C1FE18B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total current liabilities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_59199711524B42F0DCAA3BAF5C1FE18B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_59199711524B42F0DCAA3BAF5C1FE18B" xlink:to="lab_us-gaap_LiabilitiesCurrent_59199711524B42F0DCAA3BAF5C1FE18B" xlink:type="arc"/>
<link:label id="lab_msc_IntercompanyLoansPayable_4CA093982D8E29FD85F63BAF5C1FBFD0_terseLabel_en-US" xlink:label="lab_msc_IntercompanyLoansPayable_4CA093982D8E29FD85F63BAF5C1FBFD0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intercompany loans payable </link:label>
<link:label id="lab_msc_IntercompanyLoansPayable_4CA093982D8E29FD85F63BAF5C1FBFD0_label_en-US" xlink:label="lab_msc_IntercompanyLoansPayable_4CA093982D8E29FD85F63BAF5C1FBFD0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intercompany loans payable </link:label>
<link:label id="lab_msc_IntercompanyLoansPayable_4CA093982D8E29FD85F63BAF5C1FBFD0_documentation_en-US" xlink:label="lab_msc_IntercompanyLoansPayable_4CA093982D8E29FD85F63BAF5C1FBFD0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Intercompany loans payable </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_IntercompanyLoansPayable" xlink:label="loc_msc_IntercompanyLoansPayable_4CA093982D8E29FD85F63BAF5C1FBFD0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyLoansPayable_4CA093982D8E29FD85F63BAF5C1FBFD0" xlink:to="lab_msc_IntercompanyLoansPayable_4CA093982D8E29FD85F63BAF5C1FBFD0" xlink:type="arc"/>
<link:label id="lab_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_948B5C90062FBE53D4BB3BAF5C1F73E7_terseLabel_en-US" xlink:label="lab_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_948B5C90062FBE53D4BB3BAF5C1F73E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated losses of unconsolidated subsidiaries in excess of investment </link:label>
<link:label id="lab_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_948B5C90062FBE53D4BB3BAF5C1F73E7_label_en-US" xlink:label="lab_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_948B5C90062FBE53D4BB3BAF5C1F73E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated losses of unconsolidated subsidiaries in excess of investment </link:label>
<link:label id="lab_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_948B5C90062FBE53D4BB3BAF5C1F73E7_documentation_en-US" xlink:label="lab_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_948B5C90062FBE53D4BB3BAF5C1F73E7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Accumulated losses of unconsolidated subsidiaries in excess of investment </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment" xlink:label="loc_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_948B5C90062FBE53D4BB3BAF5C1F73E7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_948B5C90062FBE53D4BB3BAF5C1F73E7" xlink:to="lab_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_948B5C90062FBE53D4BB3BAF5C1F73E7" xlink:type="arc"/>
<link:label id="lab_us-gaap_Liabilities_48CF75A0AFB1EAA86C0F3BAF5C1FE86B_totalLabel_en-US" xlink:label="lab_us-gaap_Liabilities_48CF75A0AFB1EAA86C0F3BAF5C1FE86B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total liabilities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_48CF75A0AFB1EAA86C0F3BAF5C1FE86B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_48CF75A0AFB1EAA86C0F3BAF5C1FE86B" xlink:to="lab_us-gaap_Liabilities_48CF75A0AFB1EAA86C0F3BAF5C1FE86B" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_EAEFDF885EB9E3408B233BAF5C1F0AD7_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_EAEFDF885EB9E3408B233BAF5C1F0AD7" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total deficit </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_EAEFDF885EB9E3408B233BAF5C1F0AD7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_EAEFDF885EB9E3408B233BAF5C1F0AD7" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_EAEFDF885EB9E3408B233BAF5C1F0AD7" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_8B55479167770CE4CCD33BAF5C1F9BFA_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_8B55479167770CE4CCD33BAF5C1F9BFA" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total liabilities and deficit </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_8B55479167770CE4CCD33BAF5C1F9BFA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_8B55479167770CE4CCD33BAF5C1F9BFA" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquity_8B55479167770CE4CCD33BAF5C1F9BFA" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock_36D8C17038FAE4D56CDD0EBF96A80445_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock_36D8C17038FAE4D56CDD0EBF96A80445" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] </link:label>
<link:label id="lab_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock_36D8C17038FAE4D56CDD0EBF96A80445_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock_36D8C17038FAE4D56CDD0EBF96A80445" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock_36D8C17038FAE4D56CDD0EBF96A80445" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock_36D8C17038FAE4D56CDD0EBF96A80445" xlink:to="lab_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock_36D8C17038FAE4D56CDD0EBF96A80445" xlink:type="arc"/>
<link:label id="lab_msc_ReconciliationOfSegmentEbitdaToNetIncomeTableTextBlock_367EE65C7173A320B88C0EBF96A83863_terseLabel_en-US" xlink:label="lab_msc_ReconciliationOfSegmentEbitdaToNetIncomeTableTextBlock_367EE65C7173A320B88C0EBF96A83863" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Reconciliation of Segment EBITDA to Net Income [Table Text Block] </link:label>
<link:label id="lab_msc_ReconciliationOfSegmentEbitdaToNetIncomeTableTextBlock_367EE65C7173A320B88C0EBF96A83863_label_en-US" xlink:label="lab_msc_ReconciliationOfSegmentEbitdaToNetIncomeTableTextBlock_367EE65C7173A320B88C0EBF96A83863" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reconciliation of Segment EBITDA to Net Income [Table Text Block] </link:label>
<link:label id="lab_msc_ReconciliationOfSegmentEbitdaToNetIncomeTableTextBlock_367EE65C7173A320B88C0EBF96A83863_documentation_en-US" xlink:label="lab_msc_ReconciliationOfSegmentEbitdaToNetIncomeTableTextBlock_367EE65C7173A320B88C0EBF96A83863" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Reconciliation of Segment EBITDA to Net Income [Table Text Block] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_ReconciliationOfSegmentEbitdaToNetIncomeTableTextBlock" xlink:label="loc_msc_ReconciliationOfSegmentEbitdaToNetIncomeTableTextBlock_367EE65C7173A320B88C0EBF96A83863" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_ReconciliationOfSegmentEbitdaToNetIncomeTableTextBlock_367EE65C7173A320B88C0EBF96A83863" xlink:to="lab_msc_ReconciliationOfSegmentEbitdaToNetIncomeTableTextBlock_367EE65C7173A320B88C0EBF96A83863" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfDebtTableTextBlock_63603EFAD483468F2AB20EBF9715C182_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtTableTextBlock_63603EFAD483468F2AB20EBF9715C182" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Debt [Table Text Block] </link:label>
<link:label id="lab_us-gaap_ScheduleOfDebtTableTextBlock_63603EFAD483468F2AB20EBF9715C182_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtTableTextBlock_63603EFAD483468F2AB20EBF9715C182" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Debt [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDebtTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfDebtTableTextBlock_63603EFAD483468F2AB20EBF9715C182" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDebtTableTextBlock_63603EFAD483468F2AB20EBF9715C182" xlink:to="lab_us-gaap_ScheduleOfDebtTableTextBlock_63603EFAD483468F2AB20EBF9715C182" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_A7C1B089619E313F78C40797498E6C48_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_A7C1B089619E313F78C40797498E6C48" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Related Party Transactions [Table Text Block] </link:label>
<link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_A7C1B089619E313F78C40797498E6C48_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_A7C1B089619E313F78C40797498E6C48" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Related Party Transactions [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_A7C1B089619E313F78C40797498E6C48" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_A7C1B089619E313F78C40797498E6C48" xlink:to="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_A7C1B089619E313F78C40797498E6C48" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueByMeasurementFrequencyAxis_C349B774593ECC49C4A20EBF9679CD4D_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByMeasurementFrequencyAxis_C349B774593ECC49C4A20EBF9679CD4D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value by Measurement Frequency [Axis] </link:label>
<link:label id="lab_us-gaap_FairValueByMeasurementFrequencyAxis_C349B774593ECC49C4A20EBF9679CD4D_label_en-US" xlink:label="lab_us-gaap_FairValueByMeasurementFrequencyAxis_C349B774593ECC49C4A20EBF9679CD4D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Measurement Frequency [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_C349B774593ECC49C4A20EBF9679CD4D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_C349B774593ECC49C4A20EBF9679CD4D" xlink:to="lab_us-gaap_FairValueByMeasurementFrequencyAxis_C349B774593ECC49C4A20EBF9679CD4D" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueMeasurementFrequencyDomain_759F5CD380813B778A470EBF96795F77_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementFrequencyDomain_759F5CD380813B778A470EBF96795F77" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value, Measurement Frequency [Domain] </link:label>
<link:label id="lab_us-gaap_FairValueMeasurementFrequencyDomain_759F5CD380813B778A470EBF96795F77_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementFrequencyDomain_759F5CD380813B778A470EBF96795F77" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Measurement Frequency [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_759F5CD380813B778A470EBF96795F77" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_759F5CD380813B778A470EBF96795F77" xlink:to="lab_us-gaap_FairValueMeasurementFrequencyDomain_759F5CD380813B778A470EBF96795F77" xlink:type="arc"/>
<link:label id="lab_us-gaap_SegmentReportingDisclosureTextBlock_9896BA2B41A4F7ED8E430EBF9754F65C_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureTextBlock_9896BA2B41A4F7ED8E430EBF9754F65C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segment Reporting Disclosure [Text Block] </link:label>
<link:label id="lab_us-gaap_SegmentReportingDisclosureTextBlock_9896BA2B41A4F7ED8E430EBF9754F65C_label_en-US" xlink:label="lab_us-gaap_SegmentReportingDisclosureTextBlock_9896BA2B41A4F7ED8E430EBF9754F65C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment Reporting Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="loc_us-gaap_SegmentReportingDisclosureTextBlock_9896BA2B41A4F7ED8E430EBF9754F65C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingDisclosureTextBlock_9896BA2B41A4F7ED8E430EBF9754F65C" xlink:to="lab_us-gaap_SegmentReportingDisclosureTextBlock_9896BA2B41A4F7ED8E430EBF9754F65C" xlink:type="arc"/>
<link:label id="lab_msc_CondensedConsolidatingBalanceSheetTableTextBlock_8955A074870CC6A5295B1BEFA5BC71A9_terseLabel_en-US" xlink:label="lab_msc_CondensedConsolidatingBalanceSheetTableTextBlock_8955A074870CC6A5295B1BEFA5BC71A9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Condensed Consolidating Balance Sheet [Table Text Block] </link:label>
<link:label id="lab_msc_CondensedConsolidatingBalanceSheetTableTextBlock_8955A074870CC6A5295B1BEFA5BC71A9_label_en-US" xlink:label="lab_msc_CondensedConsolidatingBalanceSheetTableTextBlock_8955A074870CC6A5295B1BEFA5BC71A9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Condensed Consolidating Balance Sheet [Table Text Block] </link:label>
<link:label id="lab_msc_CondensedConsolidatingBalanceSheetTableTextBlock_8955A074870CC6A5295B1BEFA5BC71A9_documentation_en-US" xlink:label="lab_msc_CondensedConsolidatingBalanceSheetTableTextBlock_8955A074870CC6A5295B1BEFA5BC71A9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Condensed Consolidating Balance Sheet [Table Text Block] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_CondensedConsolidatingBalanceSheetTableTextBlock" xlink:label="loc_msc_CondensedConsolidatingBalanceSheetTableTextBlock_8955A074870CC6A5295B1BEFA5BC71A9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_CondensedConsolidatingBalanceSheetTableTextBlock_8955A074870CC6A5295B1BEFA5BC71A9" xlink:to="lab_msc_CondensedConsolidatingBalanceSheetTableTextBlock_8955A074870CC6A5295B1BEFA5BC71A9" xlink:type="arc"/>
<link:label id="lab_msc_CondensedConsolidatingStatementOfOperationsTableTextBlock_89106CDD4113230E690A1BEFA5BC3995_terseLabel_en-US" xlink:label="lab_msc_CondensedConsolidatingStatementOfOperationsTableTextBlock_89106CDD4113230E690A1BEFA5BC3995" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Condensed Consolidating Statement of Operations [Table Text Block] </link:label>
<link:label id="lab_msc_CondensedConsolidatingStatementOfOperationsTableTextBlock_89106CDD4113230E690A1BEFA5BC3995_label_en-US" xlink:label="lab_msc_CondensedConsolidatingStatementOfOperationsTableTextBlock_89106CDD4113230E690A1BEFA5BC3995" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Condensed Consolidating Statement of Operations [Table Text Block] </link:label>
<link:label id="lab_msc_CondensedConsolidatingStatementOfOperationsTableTextBlock_89106CDD4113230E690A1BEFA5BC3995_documentation_en-US" xlink:label="lab_msc_CondensedConsolidatingStatementOfOperationsTableTextBlock_89106CDD4113230E690A1BEFA5BC3995" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Condensed Consolidating Statement of Operations [Table Text Block] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_CondensedConsolidatingStatementOfOperationsTableTextBlock" xlink:label="loc_msc_CondensedConsolidatingStatementOfOperationsTableTextBlock_89106CDD4113230E690A1BEFA5BC3995" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_CondensedConsolidatingStatementOfOperationsTableTextBlock_89106CDD4113230E690A1BEFA5BC3995" xlink:to="lab_msc_CondensedConsolidatingStatementOfOperationsTableTextBlock_89106CDD4113230E690A1BEFA5BC3995" xlink:type="arc"/>
<link:label id="lab_msc_CondensedConsolidatingStatementOfCashFlowsTableTextBlock_389C3929A15A6AEE91381BEFA5BCC78A_terseLabel_en-US" xlink:label="lab_msc_CondensedConsolidatingStatementOfCashFlowsTableTextBlock_389C3929A15A6AEE91381BEFA5BCC78A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Condensed Consolidating Statement of Cash Flows [Table Text Block] </link:label>
<link:label id="lab_msc_CondensedConsolidatingStatementOfCashFlowsTableTextBlock_389C3929A15A6AEE91381BEFA5BCC78A_label_en-US" xlink:label="lab_msc_CondensedConsolidatingStatementOfCashFlowsTableTextBlock_389C3929A15A6AEE91381BEFA5BCC78A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Condensed Consolidating Statement of Cash Flows [Table Text Block] </link:label>
<link:label id="lab_msc_CondensedConsolidatingStatementOfCashFlowsTableTextBlock_389C3929A15A6AEE91381BEFA5BCC78A_documentation_en-US" xlink:label="lab_msc_CondensedConsolidatingStatementOfCashFlowsTableTextBlock_389C3929A15A6AEE91381BEFA5BCC78A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Condensed Consolidating Statement of Cash Flows [Table Text Block] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_CondensedConsolidatingStatementOfCashFlowsTableTextBlock" xlink:label="loc_msc_CondensedConsolidatingStatementOfCashFlowsTableTextBlock_389C3929A15A6AEE91381BEFA5BCC78A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_CondensedConsolidatingStatementOfCashFlowsTableTextBlock_389C3929A15A6AEE91381BEFA5BCC78A" xlink:to="lab_msc_CondensedConsolidatingStatementOfCashFlowsTableTextBlock_389C3929A15A6AEE91381BEFA5BCC78A" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_96CA1892975A8CCA56452114067D4E6D_label_en-US" xlink:label="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_96CA1892975A8CCA56452114067D4E6D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Comprehensive Income [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:label="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_96CA1892975A8CCA56452114067D4E6D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_96CA1892975A8CCA56452114067D4E6D" xlink:to="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_96CA1892975A8CCA56452114067D4E6D" xlink:type="arc"/>
<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_9436E81C2F1BEEB54A592114067D0AA1_terseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_9436E81C2F1BEEB54A592114067D0AA1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other comprehensive (loss) income, net of tax: </link:label>
<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_9436E81C2F1BEEB54A592114067D0AA1_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_9436E81C2F1BEEB54A592114067D0AA1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAbstract" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_9436E81C2F1BEEB54A592114067D0AA1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_9436E81C2F1BEEB54A592114067D0AA1" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTaxAbstract_9436E81C2F1BEEB54A592114067D0AA1" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_CB0B82FD1FCEE9A519A62114067D367A_totalLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_CB0B82FD1FCEE9A519A62114067D367A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Other comprehensive income </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_CB0B82FD1FCEE9A519A62114067D367A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_CB0B82FD1FCEE9A519A62114067D367A" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTax_CB0B82FD1FCEE9A519A62114067D367A" xlink:type="arc"/>
<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_10297EA124B381EA2F952114067D2004_totalLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_10297EA124B381EA2F952114067D2004" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Comprehensive income (loss) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_10297EA124B381EA2F952114067D2004" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_10297EA124B381EA2F952114067D2004" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTax_10297EA124B381EA2F952114067D2004" xlink:type="arc"/>
<link:label id="lab_msc_IncomeTaxesAbstract_1C107365B2C7D94574410EBF9735277F_label_en-US" xlink:label="lab_msc_IncomeTaxesAbstract_1C107365B2C7D94574410EBF9735277F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Taxes [Abstract] </link:label>
<link:label id="lab_msc_IncomeTaxesAbstract_1C107365B2C7D94574410EBF9735277F_documentation_en-US" xlink:label="lab_msc_IncomeTaxesAbstract_1C107365B2C7D94574410EBF9735277F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Income Taxes [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_IncomeTaxesAbstract" xlink:label="loc_msc_IncomeTaxesAbstract_1C107365B2C7D94574410EBF9735277F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IncomeTaxesAbstract_1C107365B2C7D94574410EBF9735277F" xlink:to="lab_msc_IncomeTaxesAbstract_1C107365B2C7D94574410EBF9735277F" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_0A5454536B5B44A802280EBF9744CF4D_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_0A5454536B5B44A802280EBF9744CF4D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income Tax Disclosure [Text Block] </link:label>
<link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_0A5454536B5B44A802280EBF9744CF4D_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_0A5454536B5B44A802280EBF9744CF4D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="loc_us-gaap_IncomeTaxDisclosureTextBlock_0A5454536B5B44A802280EBF9744CF4D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxDisclosureTextBlock_0A5454536B5B44A802280EBF9744CF4D" xlink:to="lab_us-gaap_IncomeTaxDisclosureTextBlock_0A5454536B5B44A802280EBF9744CF4D" xlink:type="arc"/>
<link:label id="lab_us-gaap_LossContingenciesTable_5A1A86AB26115BA2DC9D214782BC6921_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_5A1A86AB26115BA2DC9D214782BC6921" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loss Contingencies [Table] </link:label>
<link:label id="lab_us-gaap_LossContingenciesTable_5A1A86AB26115BA2DC9D214782BC6921_label_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_5A1A86AB26115BA2DC9D214782BC6921" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loss Contingencies [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_5A1A86AB26115BA2DC9D214782BC6921" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesTable_5A1A86AB26115BA2DC9D214782BC6921" xlink:to="lab_us-gaap_LossContingenciesTable_5A1A86AB26115BA2DC9D214782BC6921" xlink:type="arc"/>
<link:label id="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_13F02F203D33D0A6A82B214782BC8ECA_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_13F02F203D33D0A6A82B214782BC8ECA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loss Contingencies by Nature of Contingency [Axis] </link:label>
<link:label id="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_13F02F203D33D0A6A82B214782BC8ECA_label_en-US" xlink:label="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_13F02F203D33D0A6A82B214782BC8ECA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loss Contingency Nature [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_13F02F203D33D0A6A82B214782BC8ECA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_13F02F203D33D0A6A82B214782BC8ECA" xlink:to="lab_us-gaap_LossContingenciesByNatureOfContingencyAxis_13F02F203D33D0A6A82B214782BC8ECA" xlink:type="arc"/>
<link:label id="lab_us-gaap_LossContingencyNatureDomain_A35583DB05C1609A25B8214782BC8DC3_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyNatureDomain_A35583DB05C1609A25B8214782BC8DC3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loss Contingency, Nature [Domain] </link:label>
<link:label id="lab_us-gaap_LossContingencyNatureDomain_A35583DB05C1609A25B8214782BC8DC3_label_en-US" xlink:label="lab_us-gaap_LossContingencyNatureDomain_A35583DB05C1609A25B8214782BC8DC3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loss Contingency, Nature [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="loc_us-gaap_LossContingencyNatureDomain_A35583DB05C1609A25B8214782BC8DC3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyNatureDomain_A35583DB05C1609A25B8214782BC8DC3" xlink:to="lab_us-gaap_LossContingencyNatureDomain_A35583DB05C1609A25B8214782BC8DC3" xlink:type="arc"/>
<link:label id="lab_us-gaap_LossContingenciesLineItems_CBF4388FEF05E0A2E4FF214782BC0E50_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems_CBF4388FEF05E0A2E4FF214782BC0E50" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loss Contingencies [Line Items] </link:label>
<link:label id="lab_us-gaap_LossContingenciesLineItems_CBF4388FEF05E0A2E4FF214782BC0E50_label_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems_CBF4388FEF05E0A2E4FF214782BC0E50" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Loss Contingencies [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_CBF4388FEF05E0A2E4FF214782BC0E50" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesLineItems_CBF4388FEF05E0A2E4FF214782BC0E50" xlink:to="lab_us-gaap_LossContingenciesLineItems_CBF4388FEF05E0A2E4FF214782BC0E50" xlink:type="arc"/>
<link:label id="lab_us-gaap_LitigationReserve_A107DA80BBCFBD3C1EBD214782BCCB76_terseLabel_en-US" xlink:label="lab_us-gaap_LitigationReserve_A107DA80BBCFBD3C1EBD214782BCCB76" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Estimated Litigation Liability </link:label>
<link:label id="lab_us-gaap_LitigationReserve_A107DA80BBCFBD3C1EBD214782BCCB76_label_en-US" xlink:label="lab_us-gaap_LitigationReserve_A107DA80BBCFBD3C1EBD214782BCCB76" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Estimated Litigation Liability </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LitigationReserve" xlink:label="loc_us-gaap_LitigationReserve_A107DA80BBCFBD3C1EBD214782BCCB76" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LitigationReserve_A107DA80BBCFBD3C1EBD214782BCCB76" xlink:to="lab_us-gaap_LitigationReserve_A107DA80BBCFBD3C1EBD214782BCCB76" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevenueRecognitionPolicyTextBlock_7D5850A8355AE763133021AB16B6696F_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRecognitionPolicyTextBlock_7D5850A8355AE763133021AB16B6696F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue Recognition, Policy [Policy Text Block] </link:label>
<link:label id="lab_us-gaap_RevenueRecognitionPolicyTextBlock_7D5850A8355AE763133021AB16B6696F_label_en-US" xlink:label="lab_us-gaap_RevenueRecognitionPolicyTextBlock_7D5850A8355AE763133021AB16B6696F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue Recognition, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="loc_us-gaap_RevenueRecognitionPolicyTextBlock_7D5850A8355AE763133021AB16B6696F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueRecognitionPolicyTextBlock_7D5850A8355AE763133021AB16B6696F" xlink:to="lab_us-gaap_RevenueRecognitionPolicyTextBlock_7D5850A8355AE763133021AB16B6696F" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShippingAndHandlingCostPolicyTextBlock_34DD0C4D3329DCFD4A8221A9E2676F7F_terseLabel_en-US" xlink:label="lab_us-gaap_ShippingAndHandlingCostPolicyTextBlock_34DD0C4D3329DCFD4A8221A9E2676F7F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Shipping and Handling Cost, Policy [Policy Text Block] </link:label>
<link:label id="lab_us-gaap_ShippingAndHandlingCostPolicyTextBlock_34DD0C4D3329DCFD4A8221A9E2676F7F_label_en-US" xlink:label="lab_us-gaap_ShippingAndHandlingCostPolicyTextBlock_34DD0C4D3329DCFD4A8221A9E2676F7F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Shipping and Handling Cost, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShippingAndHandlingCostPolicyTextBlock" xlink:label="loc_us-gaap_ShippingAndHandlingCostPolicyTextBlock_34DD0C4D3329DCFD4A8221A9E2676F7F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShippingAndHandlingCostPolicyTextBlock_34DD0C4D3329DCFD4A8221A9E2676F7F" xlink:to="lab_us-gaap_ShippingAndHandlingCostPolicyTextBlock_34DD0C4D3329DCFD4A8221A9E2676F7F" xlink:type="arc"/>
<link:label id="lab_us-gaap_UseOfEstimates_1B9EDB059AAB26379A6A214783A4CB57_terseLabel_en-US" xlink:label="lab_us-gaap_UseOfEstimates_1B9EDB059AAB26379A6A214783A4CB57" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Use of Estimates, Policy [Policy Text Block] </link:label>
<link:label id="lab_us-gaap_UseOfEstimates_1B9EDB059AAB26379A6A214783A4CB57_label_en-US" xlink:label="lab_us-gaap_UseOfEstimates_1B9EDB059AAB26379A6A214783A4CB57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Use of Estimates, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="loc_us-gaap_UseOfEstimates_1B9EDB059AAB26379A6A214783A4CB57" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UseOfEstimates_1B9EDB059AAB26379A6A214783A4CB57" xlink:to="lab_us-gaap_UseOfEstimates_1B9EDB059AAB26379A6A214783A4CB57" xlink:type="arc"/>
<link:label id="lab_us-gaap_SubsequentEventsPolicyPolicyTextBlock_A0360D6F1609DEF2B3BC214783A4226C_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventsPolicyPolicyTextBlock_A0360D6F1609DEF2B3BC214783A4226C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Subsequent Events, Policy [Policy Text Block] </link:label>
<link:label id="lab_us-gaap_SubsequentEventsPolicyPolicyTextBlock_A0360D6F1609DEF2B3BC214783A4226C_label_en-US" xlink:label="lab_us-gaap_SubsequentEventsPolicyPolicyTextBlock_A0360D6F1609DEF2B3BC214783A4226C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subsequent Events, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_SubsequentEventsPolicyPolicyTextBlock_A0360D6F1609DEF2B3BC214783A4226C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventsPolicyPolicyTextBlock_A0360D6F1609DEF2B3BC214783A4226C" xlink:to="lab_us-gaap_SubsequentEventsPolicyPolicyTextBlock_A0360D6F1609DEF2B3BC214783A4226C" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_A41CC737F0DC608A4F2B21AB5E3B3D6C_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_A41CC737F0DC608A4F2B21AB5E3B3D6C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, Policy [Policy Text Block] </link:label>
<link:label id="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_A41CC737F0DC608A4F2B21AB5E3B3D6C_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_A41CC737F0DC608A4F2B21AB5E3B3D6C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="loc_us-gaap_CashAndCashEquivalentsPolicyTextBlock_A41CC737F0DC608A4F2B21AB5E3B3D6C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsPolicyTextBlock_A41CC737F0DC608A4F2B21AB5E3B3D6C" xlink:to="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_A41CC737F0DC608A4F2B21AB5E3B3D6C" xlink:type="arc"/>
<link:label id="lab_us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_31385FD2BBF6949B3756214783A400F6_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_31385FD2BBF6949B3756214783A400F6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements and Changes in Accounting Principles [Text Block] </link:label>
<link:label id="lab_us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_31385FD2BBF6949B3756214783A400F6_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_31385FD2BBF6949B3756214783A400F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements and Changes in Accounting Principles [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock" xlink:label="loc_us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_31385FD2BBF6949B3756214783A400F6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_31385FD2BBF6949B3756214783A400F6" xlink:to="lab_us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_31385FD2BBF6949B3756214783A400F6" xlink:type="arc"/>
<link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_7D8D5F6E89E1BA02EBA9214783A4527C_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_7D8D5F6E89E1BA02EBA9214783A4527C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements, Policy [Policy Text Block] </link:label>
<link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_7D8D5F6E89E1BA02EBA9214783A4527C_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_7D8D5F6E89E1BA02EBA9214783A4527C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_7D8D5F6E89E1BA02EBA9214783A4527C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_7D8D5F6E89E1BA02EBA9214783A4527C" xlink:to="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_7D8D5F6E89E1BA02EBA9214783A4527C" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtAndCapitalLeaseObligationsAbstract_B34307835056F098BEEB3BAF5C9A8CC0_label_en-US" xlink:label="lab_us-gaap_DebtAndCapitalLeaseObligationsAbstract_B34307835056F098BEEB3BAF5C9A8CC0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt and Capital Lease Obligations [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtAndCapitalLeaseObligationsAbstract" xlink:label="loc_us-gaap_DebtAndCapitalLeaseObligationsAbstract_B34307835056F098BEEB3BAF5C9A8CC0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtAndCapitalLeaseObligationsAbstract_B34307835056F098BEEB3BAF5C9A8CC0" xlink:to="lab_us-gaap_DebtAndCapitalLeaseObligationsAbstract_B34307835056F098BEEB3BAF5C9A8CC0" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentTable_58A57AC29275AD1F409C3BAF5C9A6871_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_58A57AC29275AD1F409C3BAF5C9A6871" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Long-term Debt Instruments [Table] </link:label>
<link:label id="lab_us-gaap_DebtInstrumentTable_58A57AC29275AD1F409C3BAF5C9A6871_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_58A57AC29275AD1F409C3BAF5C9A6871" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Long-term Debt Instruments [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_58A57AC29275AD1F409C3BAF5C9A6871" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTable_58A57AC29275AD1F409C3BAF5C9A6871" xlink:to="lab_us-gaap_DebtInstrumentTable_58A57AC29275AD1F409C3BAF5C9A6871" xlink:type="arc"/>
<link:label id="lab_msc_CurrentInterestRateReferencesAxis_57D1460CFF3F2BE432923BAF5C9A5349_terseLabel_en-US" xlink:label="lab_msc_CurrentInterestRateReferencesAxis_57D1460CFF3F2BE432923BAF5C9A5349" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current Interest Rate References [Axis] </link:label>
<link:label id="lab_msc_CurrentInterestRateReferencesAxis_57D1460CFF3F2BE432923BAF5C9A5349_label_en-US" xlink:label="lab_msc_CurrentInterestRateReferencesAxis_57D1460CFF3F2BE432923BAF5C9A5349" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Current Interest Rate References [Axis] </link:label>
<link:label id="lab_msc_CurrentInterestRateReferencesAxis_57D1460CFF3F2BE432923BAF5C9A5349_documentation_en-US" xlink:label="lab_msc_CurrentInterestRateReferencesAxis_57D1460CFF3F2BE432923BAF5C9A5349" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Current Interest Rate References [Axis] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_CurrentInterestRateReferencesAxis" xlink:label="loc_msc_CurrentInterestRateReferencesAxis_57D1460CFF3F2BE432923BAF5C9A5349" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_CurrentInterestRateReferencesAxis_57D1460CFF3F2BE432923BAF5C9A5349" xlink:to="lab_msc_CurrentInterestRateReferencesAxis_57D1460CFF3F2BE432923BAF5C9A5349" xlink:type="arc"/>
<link:label id="lab_msc_CurrentInterestRateReferencesDomain_0CCF3A7FBDD927FAF7813BAF5C9AF458_terseLabel_en-US" xlink:label="lab_msc_CurrentInterestRateReferencesDomain_0CCF3A7FBDD927FAF7813BAF5C9AF458" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current Interest Rate References [Domain] </link:label>
<link:label id="lab_msc_CurrentInterestRateReferencesDomain_0CCF3A7FBDD927FAF7813BAF5C9AF458_label_en-US" xlink:label="lab_msc_CurrentInterestRateReferencesDomain_0CCF3A7FBDD927FAF7813BAF5C9AF458" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Current Interest Rate References [Domain] </link:label>
<link:label id="lab_msc_CurrentInterestRateReferencesDomain_0CCF3A7FBDD927FAF7813BAF5C9AF458_documentation_en-US" xlink:label="lab_msc_CurrentInterestRateReferencesDomain_0CCF3A7FBDD927FAF7813BAF5C9AF458" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> [Domain] for Current Interest Rate References [Axis] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_CurrentInterestRateReferencesDomain" xlink:label="loc_msc_CurrentInterestRateReferencesDomain_0CCF3A7FBDD927FAF7813BAF5C9AF458" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_CurrentInterestRateReferencesDomain_0CCF3A7FBDD927FAF7813BAF5C9AF458" xlink:to="lab_msc_CurrentInterestRateReferencesDomain_0CCF3A7FBDD927FAF7813BAF5C9AF458" xlink:type="arc"/>
<link:label id="lab_msc_InitialInterestRateReferencesAxis_F4F20EFEA886D1EAF8CA3BAF5C9A4496_terseLabel_en-US" xlink:label="lab_msc_InitialInterestRateReferencesAxis_F4F20EFEA886D1EAF8CA3BAF5C9A4496" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Initial Interest Rate References [Axis] </link:label>
<link:label id="lab_msc_InitialInterestRateReferencesAxis_F4F20EFEA886D1EAF8CA3BAF5C9A4496_label_en-US" xlink:label="lab_msc_InitialInterestRateReferencesAxis_F4F20EFEA886D1EAF8CA3BAF5C9A4496" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Initial Interest Rate References [Axis] </link:label>
<link:label id="lab_msc_InitialInterestRateReferencesAxis_F4F20EFEA886D1EAF8CA3BAF5C9A4496_documentation_en-US" xlink:label="lab_msc_InitialInterestRateReferencesAxis_F4F20EFEA886D1EAF8CA3BAF5C9A4496" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Initial Interest Rate References [Axis] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_InitialInterestRateReferencesAxis" xlink:label="loc_msc_InitialInterestRateReferencesAxis_F4F20EFEA886D1EAF8CA3BAF5C9A4496" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_InitialInterestRateReferencesAxis_F4F20EFEA886D1EAF8CA3BAF5C9A4496" xlink:to="lab_msc_InitialInterestRateReferencesAxis_F4F20EFEA886D1EAF8CA3BAF5C9A4496" xlink:type="arc"/>
<link:label id="lab_msc_InterestRateReferencesDomain_0CF774384FDDDAAF173C3BAF5C9A90C9_terseLabel_en-US" xlink:label="lab_msc_InterestRateReferencesDomain_0CF774384FDDDAAF173C3BAF5C9A90C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest Rate References [Domain] </link:label>
<link:label id="lab_msc_InterestRateReferencesDomain_0CF774384FDDDAAF173C3BAF5C9A90C9_label_en-US" xlink:label="lab_msc_InterestRateReferencesDomain_0CF774384FDDDAAF173C3BAF5C9A90C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Rate References [Domain] </link:label>
<link:label id="lab_msc_InterestRateReferencesDomain_0CF774384FDDDAAF173C3BAF5C9A90C9_documentation_en-US" xlink:label="lab_msc_InterestRateReferencesDomain_0CF774384FDDDAAF173C3BAF5C9A90C9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Interest Rate References [Domain] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_InterestRateReferencesDomain" xlink:label="loc_msc_InterestRateReferencesDomain_0CF774384FDDDAAF173C3BAF5C9A90C9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_InterestRateReferencesDomain_0CF774384FDDDAAF173C3BAF5C9A90C9" xlink:to="lab_msc_InterestRateReferencesDomain_0CF774384FDDDAAF173C3BAF5C9A90C9" xlink:type="arc"/>
<link:label id="lab_msc_ABLFacilityDomain_AD84A8904DF2E84A15F93BAF5C9ACACD_terseLabel_en-US" xlink:label="lab_msc_ABLFacilityDomain_AD84A8904DF2E84A15F93BAF5C9ACACD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> ABL Facility [Domain] </link:label>
<link:label id="lab_msc_ABLFacilityDomain_AD84A8904DF2E84A15F93BAF5C9ACACD_label_en-US" xlink:label="lab_msc_ABLFacilityDomain_AD84A8904DF2E84A15F93BAF5C9ACACD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> ABL Facility [Domain] </link:label>
<link:label id="lab_msc_ABLFacilityDomain_AD84A8904DF2E84A15F93BAF5C9ACACD_documentation_en-US" xlink:label="lab_msc_ABLFacilityDomain_AD84A8904DF2E84A15F93BAF5C9ACACD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> ABL Facility [Domain] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_ABLFacilityDomain" xlink:label="loc_msc_ABLFacilityDomain_AD84A8904DF2E84A15F93BAF5C9ACACD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_ABLFacilityDomain_AD84A8904DF2E84A15F93BAF5C9ACACD" xlink:to="lab_msc_ABLFacilityDomain_AD84A8904DF2E84A15F93BAF5C9ACACD" xlink:type="arc"/>
<link:label id="lab_msc_ABLCreditFacilitybalancecapacityatEarlyMaturityTestDateMember_E95ED528ABC9C9ABD16C3BAF5C9A738A_terseLabel_en-US" xlink:label="lab_msc_ABLCreditFacilitybalancecapacityatEarlyMaturityTestDateMember_E95ED528ABC9C9ABD16C3BAF5C9A738A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> ABL Facility [Domain] </link:label>
<link:label id="lab_msc_ABLCreditFacilitybalancecapacityatEarlyMaturityTestDateMember_E95ED528ABC9C9ABD16C3BAF5C9A738A_label_en-US" xlink:label="lab_msc_ABLCreditFacilitybalancecapacityatEarlyMaturityTestDateMember_E95ED528ABC9C9ABD16C3BAF5C9A738A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> ABL Credit Facility balance capacity at Early Maturity Test Date [Member] </link:label>
<link:label id="lab_msc_ABLCreditFacilitybalancecapacityatEarlyMaturityTestDateMember_E95ED528ABC9C9ABD16C3BAF5C9A738A_documentation_en-US" xlink:label="lab_msc_ABLCreditFacilitybalancecapacityatEarlyMaturityTestDateMember_E95ED528ABC9C9ABD16C3BAF5C9A738A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> ABL Credit Facility balance capacity at Early Maturity Test Date [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_ABLCreditFacilitybalancecapacityatEarlyMaturityTestDateMember" xlink:label="loc_msc_ABLCreditFacilitybalancecapacityatEarlyMaturityTestDateMember_E95ED528ABC9C9ABD16C3BAF5C9A738A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_ABLCreditFacilitybalancecapacityatEarlyMaturityTestDateMember_E95ED528ABC9C9ABD16C3BAF5C9A738A" xlink:to="lab_msc_ABLCreditFacilitybalancecapacityatEarlyMaturityTestDateMember_E95ED528ABC9C9ABD16C3BAF5C9A738A" xlink:type="arc"/>
<link:label id="lab_msc_FirstPrioritySeniorNotesDue2020Member_DAB66CF155DEB579952A3BAF5C9A3D16_terseLabel_en-US" xlink:label="lab_msc_FirstPrioritySeniorNotesDue2020Member_DAB66CF155DEB579952A3BAF5C9A3D16" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 6.625% First Priority Senior Notes Due 2020 [Member] </link:label>
<link:label id="lab_msc_FirstPrioritySeniorNotesDue2020Member_DAB66CF155DEB579952A3BAF5C9A3D16_label_en-US" xlink:label="lab_msc_FirstPrioritySeniorNotesDue2020Member_DAB66CF155DEB579952A3BAF5C9A3D16" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> First Priority Senior Notes Due 2020 [Member] </link:label>
<link:label id="lab_msc_FirstPrioritySeniorNotesDue2020Member_DAB66CF155DEB579952A3BAF5C9A3D16_documentation_en-US" xlink:label="lab_msc_FirstPrioritySeniorNotesDue2020Member_DAB66CF155DEB579952A3BAF5C9A3D16" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> First Priority Senior Notes Due 2020 [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_FirstPrioritySeniorNotesDue2020Member" xlink:label="loc_msc_FirstPrioritySeniorNotesDue2020Member_DAB66CF155DEB579952A3BAF5C9A3D16" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_FirstPrioritySeniorNotesDue2020Member_DAB66CF155DEB579952A3BAF5C9A3D16" xlink:to="lab_msc_FirstPrioritySeniorNotesDue2020Member_DAB66CF155DEB579952A3BAF5C9A3D16" xlink:type="arc"/>
<link:label id="lab_msc_A92DebenturesDue2021Member_1A2DF5564C3DCDC50CC13BAF5C9B44A8_terseLabel_en-US" xlink:label="lab_msc_A92DebenturesDue2021Member_1A2DF5564C3DCDC50CC13BAF5C9B44A8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 9.2% Debentures Due 2021 [Member] </link:label>
<link:label id="lab_msc_A92DebenturesDue2021Member_1A2DF5564C3DCDC50CC13BAF5C9B44A8_label_en-US" xlink:label="lab_msc_A92DebenturesDue2021Member_1A2DF5564C3DCDC50CC13BAF5C9B44A8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 9.2% Debentures Due 2021 [Member] </link:label>
<link:label id="lab_msc_A92DebenturesDue2021Member_1A2DF5564C3DCDC50CC13BAF5C9B44A8_documentation_en-US" xlink:label="lab_msc_A92DebenturesDue2021Member_1A2DF5564C3DCDC50CC13BAF5C9B44A8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 9.2% Debentures Due 2021 [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_A92DebenturesDue2021Member" xlink:label="loc_msc_A92DebenturesDue2021Member_1A2DF5564C3DCDC50CC13BAF5C9B44A8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_A92DebenturesDue2021Member_1A2DF5564C3DCDC50CC13BAF5C9B44A8" xlink:to="lab_msc_A92DebenturesDue2021Member_1A2DF5564C3DCDC50CC13BAF5C9B44A8" xlink:type="arc"/>
<link:label id="lab_msc_A7875DebenturesDue2023Member_C3C083454F17DF2042CD3BAF5C9BFB12_terseLabel_en-US" xlink:label="lab_msc_A7875DebenturesDue2023Member_C3C083454F17DF2042CD3BAF5C9BFB12" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 7.875% Debentures Due 2023 [Member] </link:label>
<link:label id="lab_msc_A7875DebenturesDue2023Member_C3C083454F17DF2042CD3BAF5C9BFB12_label_en-US" xlink:label="lab_msc_A7875DebenturesDue2023Member_C3C083454F17DF2042CD3BAF5C9BFB12" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 7.875% Debentures Due 2023 [Member] </link:label>
<link:label id="lab_msc_A7875DebenturesDue2023Member_C3C083454F17DF2042CD3BAF5C9BFB12_documentation_en-US" xlink:label="lab_msc_A7875DebenturesDue2023Member_C3C083454F17DF2042CD3BAF5C9BFB12" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 7.875% Debentures Due 2023 [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_A7875DebenturesDue2023Member" xlink:label="loc_msc_A7875DebenturesDue2023Member_C3C083454F17DF2042CD3BAF5C9BFB12" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_A7875DebenturesDue2023Member_C3C083454F17DF2042CD3BAF5C9BFB12" xlink:to="lab_msc_A7875DebenturesDue2023Member_C3C083454F17DF2042CD3BAF5C9BFB12" xlink:type="arc"/>
<link:label id="lab_msc_AustraliaFacilityDue2021Member_5627FCA19CDD316ECD7C3BAF5C9BED49_terseLabel_en-US" xlink:label="lab_msc_AustraliaFacilityDue2021Member_5627FCA19CDD316ECD7C3BAF5C9BED49" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Australia Facility Due 2021 [Member] </link:label>
<link:label id="lab_msc_AustraliaFacilityDue2021Member_5627FCA19CDD316ECD7C3BAF5C9BED49_label_en-US" xlink:label="lab_msc_AustraliaFacilityDue2021Member_5627FCA19CDD316ECD7C3BAF5C9BED49" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Australia Facility Due 2021 [Member] </link:label>
<link:label id="lab_msc_AustraliaFacilityDue2021Member_5627FCA19CDD316ECD7C3BAF5C9BED49_documentation_en-US" xlink:label="lab_msc_AustraliaFacilityDue2021Member_5627FCA19CDD316ECD7C3BAF5C9BED49" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Australia Facility Due 2021 [Member] [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_AustraliaFacilityDue2021Member" xlink:label="loc_msc_AustraliaFacilityDue2021Member_5627FCA19CDD316ECD7C3BAF5C9BED49" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AustraliaFacilityDue2021Member_5627FCA19CDD316ECD7C3BAF5C9BED49" xlink:to="lab_msc_AustraliaFacilityDue2021Member_5627FCA19CDD316ECD7C3BAF5C9BED49" xlink:type="arc"/>
<link:label id="lab_msc_BrazilianBankLoansMember_FB45E237F3652A8198453BAF5C9B5FE4_terseLabel_en-US" xlink:label="lab_msc_BrazilianBankLoansMember_FB45E237F3652A8198453BAF5C9B5FE4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Brazilian Bank Loans [Member] </link:label>
<link:label id="lab_msc_BrazilianBankLoansMember_FB45E237F3652A8198453BAF5C9B5FE4_label_en-US" xlink:label="lab_msc_BrazilianBankLoansMember_FB45E237F3652A8198453BAF5C9B5FE4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Brazilian Bank Loans [Member] </link:label>
<link:label id="lab_msc_BrazilianBankLoansMember_FB45E237F3652A8198453BAF5C9B5FE4_documentation_en-US" xlink:label="lab_msc_BrazilianBankLoansMember_FB45E237F3652A8198453BAF5C9B5FE4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Brazilian Bank Loans [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_BrazilianBankLoansMember" xlink:label="loc_msc_BrazilianBankLoansMember_FB45E237F3652A8198453BAF5C9B5FE4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_BrazilianBankLoansMember_FB45E237F3652A8198453BAF5C9B5FE4" xlink:to="lab_msc_BrazilianBankLoansMember_FB45E237F3652A8198453BAF5C9B5FE4" xlink:type="arc"/>
<link:label id="lab_us-gaap_CapitalLeaseObligationsMember_8FDEFEEAFF0A7AFD855F3BAF5C9B86C2_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligationsMember_8FDEFEEAFF0A7AFD855F3BAF5C9B86C2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Capital Leases [Member] </link:label>
<link:label id="lab_us-gaap_CapitalLeaseObligationsMember_8FDEFEEAFF0A7AFD855F3BAF5C9B86C2_label_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligationsMember_8FDEFEEAFF0A7AFD855F3BAF5C9B86C2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Capital Lease Obligations [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CapitalLeaseObligationsMember" xlink:label="loc_us-gaap_CapitalLeaseObligationsMember_8FDEFEEAFF0A7AFD855F3BAF5C9B86C2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeaseObligationsMember_8FDEFEEAFF0A7AFD855F3BAF5C9B86C2" xlink:to="lab_us-gaap_CapitalLeaseObligationsMember_8FDEFEEAFF0A7AFD855F3BAF5C9B86C2" xlink:type="arc"/>
<link:label id="lab_us-gaap_UnsecuredDebtMember_6AB6051E34A55EBB06D83BAF5C9BD9F4_terseLabel_en-US" xlink:label="lab_us-gaap_UnsecuredDebtMember_6AB6051E34A55EBB06D83BAF5C9BD9F4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other [Member] </link:label>
<link:label id="lab_us-gaap_UnsecuredDebtMember_6AB6051E34A55EBB06D83BAF5C9BD9F4_label_en-US" xlink:label="lab_us-gaap_UnsecuredDebtMember_6AB6051E34A55EBB06D83BAF5C9BD9F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Unsecured Debt [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnsecuredDebtMember" xlink:label="loc_us-gaap_UnsecuredDebtMember_6AB6051E34A55EBB06D83BAF5C9BD9F4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnsecuredDebtMember_6AB6051E34A55EBB06D83BAF5C9BD9F4" xlink:to="lab_us-gaap_UnsecuredDebtMember_6AB6051E34A55EBB06D83BAF5C9BD9F4" xlink:type="arc"/>
<link:label id="lab_msc_UnamortizeddebtissuancecostsMember_AE22B0A4A9FFF04B1D353BAF5C9B4E36_terseLabel_en-US" xlink:label="lab_msc_UnamortizeddebtissuancecostsMember_AE22B0A4A9FFF04B1D353BAF5C9B4E36" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unamortized debt issuance costs [Member] </link:label>
<link:label id="lab_msc_UnamortizeddebtissuancecostsMember_AE22B0A4A9FFF04B1D353BAF5C9B4E36_label_en-US" xlink:label="lab_msc_UnamortizeddebtissuancecostsMember_AE22B0A4A9FFF04B1D353BAF5C9B4E36" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Unamortized debt issuance costs [Member] </link:label>
<link:label id="lab_msc_UnamortizeddebtissuancecostsMember_AE22B0A4A9FFF04B1D353BAF5C9B4E36_documentation_en-US" xlink:label="lab_msc_UnamortizeddebtissuancecostsMember_AE22B0A4A9FFF04B1D353BAF5C9B4E36" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Unamortized debt issuance costs [Member] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_UnamortizeddebtissuancecostsMember" xlink:label="loc_msc_UnamortizeddebtissuancecostsMember_AE22B0A4A9FFF04B1D353BAF5C9B4E36" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_UnamortizeddebtissuancecostsMember_AE22B0A4A9FFF04B1D353BAF5C9B4E36" xlink:to="lab_msc_UnamortizeddebtissuancecostsMember_AE22B0A4A9FFF04B1D353BAF5C9B4E36" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentLineItems_63EDF76CD1D2B442FB9D3BAF5C9BFAC1_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_63EDF76CD1D2B442FB9D3BAF5C9BFAC1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Line Items] </link:label>
<link:label id="lab_us-gaap_DebtInstrumentLineItems_63EDF76CD1D2B442FB9D3BAF5C9BFAC1_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_63EDF76CD1D2B442FB9D3BAF5C9BFAC1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_63EDF76CD1D2B442FB9D3BAF5C9BFAC1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentLineItems_63EDF76CD1D2B442FB9D3BAF5C9BFAC1" xlink:to="lab_us-gaap_DebtInstrumentLineItems_63EDF76CD1D2B442FB9D3BAF5C9BFAC1" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentUnamortizedPremium_6EDBF49B1A6EECE380F13BAF5C9BA6BE_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedPremium_6EDBF49B1A6EECE380F13BAF5C9BA6BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Unamortized Premium </link:label>
<link:label id="lab_us-gaap_DebtInstrumentUnamortizedPremium_6EDBF49B1A6EECE380F13BAF5C9BA6BE_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedPremium_6EDBF49B1A6EECE380F13BAF5C9BA6BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Unamortized Premium </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentUnamortizedPremium" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedPremium_6EDBF49B1A6EECE380F13BAF5C9BA6BE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedPremium_6EDBF49B1A6EECE380F13BAF5C9BA6BE" xlink:to="lab_us-gaap_DebtInstrumentUnamortizedPremium_6EDBF49B1A6EECE380F13BAF5C9BA6BE" xlink:type="arc"/>
<link:label id="lab_msc_NonAffiliatedDebtAbstract_5D7762EF9849C08D8DCF3BAF5C9B8218_terseLabel_en-US" xlink:label="lab_msc_NonAffiliatedDebtAbstract_5D7762EF9849C08D8DCF3BAF5C9B8218" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-Affiliated Debt [Abstract] </link:label>
<link:label id="lab_msc_NonAffiliatedDebtAbstract_5D7762EF9849C08D8DCF3BAF5C9B8218_label_en-US" xlink:label="lab_msc_NonAffiliatedDebtAbstract_5D7762EF9849C08D8DCF3BAF5C9B8218" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Non-Affiliated Debt [Abstract] </link:label>
<link:label id="lab_msc_NonAffiliatedDebtAbstract_5D7762EF9849C08D8DCF3BAF5C9B8218_documentation_en-US" xlink:label="lab_msc_NonAffiliatedDebtAbstract_5D7762EF9849C08D8DCF3BAF5C9B8218" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Non-Affiliated Debt [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_NonAffiliatedDebtAbstract" xlink:label="loc_msc_NonAffiliatedDebtAbstract_5D7762EF9849C08D8DCF3BAF5C9B8218" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_NonAffiliatedDebtAbstract_5D7762EF9849C08D8DCF3BAF5C9B8218" xlink:to="lab_msc_NonAffiliatedDebtAbstract_5D7762EF9849C08D8DCF3BAF5C9B8218" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtCurrent_29A22A067316801726D03BAF5C9BB1D1_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_29A22A067316801726D03BAF5C9BB1D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Due Within One Year </link:label>
<link:label id="lab_us-gaap_LongTermDebtCurrent_29A22A067316801726D03BAF5C9BB1D1_label_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_29A22A067316801726D03BAF5C9BB1D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Current Maturities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_29A22A067316801726D03BAF5C9BB1D1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtCurrent_29A22A067316801726D03BAF5C9BB1D1" xlink:to="lab_us-gaap_LongTermDebtCurrent_29A22A067316801726D03BAF5C9BB1D1" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredFinanceCostsGross_9534A8E181BA304291F53BAF5C9B9B40_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsGross_9534A8E181BA304291F53BAF5C9B9B40" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Debt Issuance Costs, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredFinanceCostsGross" xlink:label="loc_us-gaap_DeferredFinanceCostsGross_9534A8E181BA304291F53BAF5C9B9B40" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredFinanceCostsGross_9534A8E181BA304291F53BAF5C9B9B40" xlink:to="lab_us-gaap_DeferredFinanceCostsGross_9534A8E181BA304291F53BAF5C9B9B40" xlink:type="arc"/>
<link:label id="lab_msc_OtherBorrowingsAbstract_7DF63AC04A0473DB1DF93BAF5C9B4764_terseLabel_en-US" xlink:label="lab_msc_OtherBorrowingsAbstract_7DF63AC04A0473DB1DF93BAF5C9B4764" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Borrowings [Abstract] </link:label>
<link:label id="lab_msc_OtherBorrowingsAbstract_7DF63AC04A0473DB1DF93BAF5C9B4764_label_en-US" xlink:label="lab_msc_OtherBorrowingsAbstract_7DF63AC04A0473DB1DF93BAF5C9B4764" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Borrowings [Abstract] </link:label>
<link:label id="lab_msc_OtherBorrowingsAbstract_7DF63AC04A0473DB1DF93BAF5C9B4764_documentation_en-US" xlink:label="lab_msc_OtherBorrowingsAbstract_7DF63AC04A0473DB1DF93BAF5C9B4764" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Other Borrowings [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_OtherBorrowingsAbstract" xlink:label="loc_msc_OtherBorrowingsAbstract_7DF63AC04A0473DB1DF93BAF5C9B4764" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_OtherBorrowingsAbstract_7DF63AC04A0473DB1DF93BAF5C9B4764" xlink:to="lab_msc_OtherBorrowingsAbstract_7DF63AC04A0473DB1DF93BAF5C9B4764" xlink:type="arc"/>
<link:label id="lab_msc_DebenturesAbstract_AD4BC4DB45C3382491D33BAF5C9B5BC2_terseLabel_en-US" xlink:label="lab_msc_DebenturesAbstract_AD4BC4DB45C3382491D33BAF5C9B5BC2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debentures [Abstract] </link:label>
<link:label id="lab_msc_DebenturesAbstract_AD4BC4DB45C3382491D33BAF5C9B5BC2_label_en-US" xlink:label="lab_msc_DebenturesAbstract_AD4BC4DB45C3382491D33BAF5C9B5BC2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debentures [Abstract] </link:label>
<link:label id="lab_msc_DebenturesAbstract_AD4BC4DB45C3382491D33BAF5C9B5BC2_documentation_en-US" xlink:label="lab_msc_DebenturesAbstract_AD4BC4DB45C3382491D33BAF5C9B5BC2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debentures [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_DebenturesAbstract" xlink:label="loc_msc_DebenturesAbstract_AD4BC4DB45C3382491D33BAF5C9B5BC2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_DebenturesAbstract_AD4BC4DB45C3382491D33BAF5C9B5BC2" xlink:to="lab_msc_DebenturesAbstract_AD4BC4DB45C3382491D33BAF5C9B5BC2" xlink:type="arc"/>
<link:label id="lab_msc_SeniorSecuredNotesAbstract_4278A1A2F282D02DBFAA3BAF5C9B7807_terseLabel_en-US" xlink:label="lab_msc_SeniorSecuredNotesAbstract_4278A1A2F282D02DBFAA3BAF5C9B7807" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Senior Secured Notes [Abstract] </link:label>
<link:label id="lab_msc_SeniorSecuredNotesAbstract_4278A1A2F282D02DBFAA3BAF5C9B7807_label_en-US" xlink:label="lab_msc_SeniorSecuredNotesAbstract_4278A1A2F282D02DBFAA3BAF5C9B7807" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Senior Secured Notes [Abstract] </link:label>
<link:label id="lab_msc_SeniorSecuredNotesAbstract_4278A1A2F282D02DBFAA3BAF5C9B7807_documentation_en-US" xlink:label="lab_msc_SeniorSecuredNotesAbstract_4278A1A2F282D02DBFAA3BAF5C9B7807" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Senior Secured Notes [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_SeniorSecuredNotesAbstract" xlink:label="loc_msc_SeniorSecuredNotesAbstract_4278A1A2F282D02DBFAA3BAF5C9B7807" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SeniorSecuredNotesAbstract_4278A1A2F282D02DBFAA3BAF5C9B7807" xlink:to="lab_msc_SeniorSecuredNotesAbstract_4278A1A2F282D02DBFAA3BAF5C9B7807" xlink:type="arc"/>
<link:label id="lab_msc_SeniorSecuredCreditFacilitiesAbstract_D27DCE49CDB1242E79613BAF5C9B3420_terseLabel_en-US" xlink:label="lab_msc_SeniorSecuredCreditFacilitiesAbstract_D27DCE49CDB1242E79613BAF5C9B3420" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Senior Secured Credit Facilities [Abstract] </link:label>
<link:label id="lab_msc_SeniorSecuredCreditFacilitiesAbstract_D27DCE49CDB1242E79613BAF5C9B3420_label_en-US" xlink:label="lab_msc_SeniorSecuredCreditFacilitiesAbstract_D27DCE49CDB1242E79613BAF5C9B3420" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Senior Secured Credit Facilities [Abstract] </link:label>
<link:label id="lab_msc_SeniorSecuredCreditFacilitiesAbstract_D27DCE49CDB1242E79613BAF5C9B3420_documentation_en-US" xlink:label="lab_msc_SeniorSecuredCreditFacilitiesAbstract_D27DCE49CDB1242E79613BAF5C9B3420" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Senior Secured Credit Facilities [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_SeniorSecuredCreditFacilitiesAbstract" xlink:label="loc_msc_SeniorSecuredCreditFacilitiesAbstract_D27DCE49CDB1242E79613BAF5C9B3420" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SeniorSecuredCreditFacilitiesAbstract_D27DCE49CDB1242E79613BAF5C9B3420" xlink:to="lab_msc_SeniorSecuredCreditFacilitiesAbstract_D27DCE49CDB1242E79613BAF5C9B3420" xlink:type="arc"/>
<link:label id="lab_msc_AffiliatedDebtAbstract_9C233980601F443792703BAF5C9CB1BD_terseLabel_en-US" xlink:label="lab_msc_AffiliatedDebtAbstract_9C233980601F443792703BAF5C9CB1BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Affiliated Debt [Abstract] </link:label>
<link:label id="lab_msc_AffiliatedDebtAbstract_9C233980601F443792703BAF5C9CB1BD_label_en-US" xlink:label="lab_msc_AffiliatedDebtAbstract_9C233980601F443792703BAF5C9CB1BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Affiliated Debt [Abstract] </link:label>
<link:label id="lab_msc_AffiliatedDebtAbstract_9C233980601F443792703BAF5C9CB1BD_documentation_en-US" xlink:label="lab_msc_AffiliatedDebtAbstract_9C233980601F443792703BAF5C9CB1BD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Affiliated Debt [Abstract] </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_AffiliatedDebtAbstract" xlink:label="loc_msc_AffiliatedDebtAbstract_9C233980601F443792703BAF5C9CB1BD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AffiliatedDebtAbstract_9C233980601F443792703BAF5C9CB1BD" xlink:to="lab_msc_AffiliatedDebtAbstract_9C233980601F443792703BAF5C9CB1BD" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentMaturityDate_84898D1A330A3E8BFCF73BAF5C9C34D9_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentMaturityDate_84898D1A330A3E8BFCF73BAF5C9C34D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Maturity Date </link:label>
<link:label id="lab_us-gaap_DebtInstrumentMaturityDate_84898D1A330A3E8BFCF73BAF5C9C34D9_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentMaturityDate_84898D1A330A3E8BFCF73BAF5C9C34D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Maturity Date </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="loc_us-gaap_DebtInstrumentMaturityDate_84898D1A330A3E8BFCF73BAF5C9C34D9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentMaturityDate_84898D1A330A3E8BFCF73BAF5C9C34D9" xlink:to="lab_us-gaap_DebtInstrumentMaturityDate_84898D1A330A3E8BFCF73BAF5C9C34D9" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_FFD0E8A2104BF7025DF4037A63876741_label_en-US" xlink:label="lab_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_FFD0E8A2104BF7025DF4037A63876741" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounting Changes and Error Corrections [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_FFD0E8A2104BF7025DF4037A63876741" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_FFD0E8A2104BF7025DF4037A63876741" xlink:to="lab_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_FFD0E8A2104BF7025DF4037A63876741" xlink:type="arc"/>
<link:label id="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_A17C1F08E41F62757F721721E29ECD7E_label_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_A17C1F08E41F62757F721721E29ECD7E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Percent [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_A17C1F08E41F62757F721721E29ECD7E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_A17C1F08E41F62757F721721E29ECD7E" xlink:to="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_A17C1F08E41F62757F721721E29ECD7E" xlink:type="arc"/>
<link:label id="lab_msc_Transitiontaxexpense_2F1922FCD167EFDB51A71721F2B20503_terseLabel_en-US" xlink:label="lab_msc_Transitiontaxexpense_2F1922FCD167EFDB51A71721F2B20503" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Transition tax expense </link:label>
<link:label id="lab_msc_Transitiontaxexpense_2F1922FCD167EFDB51A71721F2B20503_label_en-US" xlink:label="lab_msc_Transitiontaxexpense_2F1922FCD167EFDB51A71721F2B20503" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Transition tax expense </link:label>
<link:label id="lab_msc_Transitiontaxexpense_2F1922FCD167EFDB51A71721F2B20503_documentation_en-US" xlink:label="lab_msc_Transitiontaxexpense_2F1922FCD167EFDB51A71721F2B20503" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Transition tax expense </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_Transitiontaxexpense" xlink:label="loc_msc_Transitiontaxexpense_2F1922FCD167EFDB51A71721F2B20503" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Transitiontaxexpense_2F1922FCD167EFDB51A71721F2B20503" xlink:to="lab_msc_Transitiontaxexpense_2F1922FCD167EFDB51A71721F2B20503" xlink:type="arc"/>
<link:label id="lab_msc_Netoperatinglosscarryforwardreduction_3AA862A9DA1EDB55CBD817252823FA0F_terseLabel_en-US" xlink:label="lab_msc_Netoperatinglosscarryforwardreduction_3AA862A9DA1EDB55CBD817252823FA0F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> net operating loss carryforward reduction </link:label>
<link:label id="lab_msc_Netoperatinglosscarryforwardreduction_3AA862A9DA1EDB55CBD817252823FA0F_label_en-US" xlink:label="lab_msc_Netoperatinglosscarryforwardreduction_3AA862A9DA1EDB55CBD817252823FA0F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> net operating loss carryforward reduction </link:label>
<link:label id="lab_msc_Netoperatinglosscarryforwardreduction_3AA862A9DA1EDB55CBD817252823FA0F_documentation_en-US" xlink:label="lab_msc_Netoperatinglosscarryforwardreduction_3AA862A9DA1EDB55CBD817252823FA0F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> net operating loss carryforward reduction </link:label>
<link:loc xlink:href="msc-20180331.xsd#msc_Netoperatinglosscarryforwardreduction" xlink:label="loc_msc_Netoperatinglosscarryforwardreduction_3AA862A9DA1EDB55CBD817252823FA0F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Netoperatinglosscarryforwardreduction_3AA862A9DA1EDB55CBD817252823FA0F" xlink:to="lab_msc_Netoperatinglosscarryforwardreduction_3AA862A9DA1EDB55CBD817252823FA0F" xlink:type="arc"/>
<link:label id="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_EE774AA87417AB5F70A41721E2A1785E_terseLabel_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_EE774AA87417AB5F70A41721E2A1785E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Percent </link:label>
<link:label id="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_EE774AA87417AB5F70A41721E2A1785E_label_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_EE774AA87417AB5F70A41721E2A1785E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Percent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_EE774AA87417AB5F70A41721E2A1785E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_EE774AA87417AB5F70A41721E2A1785E" xlink:to="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_EE774AA87417AB5F70A41721E2A1785E" xlink:type="arc"/>
</link:labelLink>
</link:linkbase>

1 Subsequent Filing that References this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 3/10/21  Hexion Inc.                       10-K       12/31/20  132:30M
↑Top
Filing Submission 0000013239-18-000015   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
About — Privacy — Redactions — Help — Mon., Apr. 29, 8:00:25.1pm ET