SEC Info - Hexion Inc. - ‘10-Q’ for 6/30/18

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Hexion Inc. – ‘10-Q’ for 6/30/18 – ‘EX-101.LAB’

On: Tuesday, 8/7/18, at 4:35pm ET · For: 6/30/18 · Accession #: 13239-18-19 · File #: 1-00071

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

 8/07/18  Hexion Inc.                       10-Q        6/30/18   64:11M

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    903K 
 2: EX-31.1(A)  Section 302 CEO Certification                       HTML     27K 
 3: EX-31.1(B)  Section 302 CFO Certification                       HTML     27K 
 4: EX-32.1     Section 906 CEO & CFO Certification                 HTML     22K 
11: R1          Document and Entity Information Document            HTML     38K 
12: R2          Condensed Consolidated Balance Sheets               HTML    153K 
13: R3          Condensed Consolidated Balance Sheets               HTML     41K 
                (Parentheticals)                                                 
14: R4          Condensed Consolidated Statements of Operations     HTML     76K 
15: R5          Condensed Consolidated Statements of Comprehensive  HTML     42K 
                Income                                                           
16: R6          Condensed Consolidated Statements of Cash Flows     HTML    113K 
17: R7          Condensed Consolidated Statement of Equity          HTML     35K 
                (Deficit)                                                        
18: R8          Background and Basis of Presentation                HTML     25K 
19: R9          Significant Accounting Policies                     HTML    124K 
20: R10         Restructuring (Notes)                               HTML     49K 
21: R11         Related Party Transactions                          HTML     66K 
22: R12         Fair Value                                          HTML     50K 
23: R13         Debt Obligations                                    HTML     76K 
24: R14         Commitments and Contingencies                       HTML     67K 
25: R15         Pension and Postretirement Expense                  HTML     93K 
26: R16         Disposition (Notes)                                 HTML     24K 
27: R17         Segment Information                                 HTML    152K 
28: R18         Changes in Accumulated Other Comprehensive Income   HTML     63K 
                (Notes)                                                          
29: R19         Income Taxes (Notes)                                HTML     29K 
30: R20         Guarantor Non-Guarantor Subsidiary Financial        HTML    703K 
                Information                                                      
31: R21         Significant Accounting Policies (Policies)          HTML    144K 
32: R22         Significant Accounting Policies (Tables)            HTML     95K 
33: R23         Restructuring (Tables)                              HTML     46K 
34: R24         Related Party Transactions (Tables)                 HTML     58K 
35: R25         Fair Value (Tables)                                 HTML     41K 
36: R26         Debt Obligations (Tables)                           HTML     72K 
37: R27         Commitments and Contingencies (Tables)              HTML     51K 
38: R28         Pension and Postretirement Expense (Tables)         HTML     93K 
39: R29         Segment Information (Tables)                        HTML    147K 
40: R30         Changes in Accumulated Other Comprehensive Income   HTML     64K 
                (Tables)                                                         
41: R31         Guarantor Non-Guarantor Subsidiary Financial        HTML    701K 
                Information (Tables)                                             
42: R32         Background and Basis of Presentation (Details) -    HTML     21K 
                Number of Reportable Segments                                    
43: R33         Significant Accounting Policies (Details)           HTML    110K 
44: R34         Restructuring Restructuring and Cost Reduction      HTML     44K 
                Programs (Details)                                               
45: R35         Restructuring Changes in liabilities recorded       HTML     29K 
                related to contract termination costs and ARO                    
                (Details)                                                        
46: R36         Related Party Transactions (Details)                HTML     71K 
47: R37         Fair Value (Details)                                HTML     32K 
48: R38         Debt Obligations (Details)                          HTML     69K 
49: R39         Commitments and Contingencies (Details) -           HTML     70K 
                Environmental Liabilities                                        
50: R40         Commitments and Contingencies (Details) -           HTML     29K 
                Non-Environmental Liabilities                                    
51: R41         Pension and Postretirement Expense (Details) -      HTML     44K 
                Schedule of Components of Net Benefit Cost                       
52: R42         Disposition (Details)                               HTML     24K 
53: R43         Segment Information (Details) - Revenues by         HTML     46K 
                Segment                                                          
54: R44         Segment Information (Details) - EBITDA by Segment   HTML     28K 
55: R45         Segment Information (Details) - Reconciliation of   HTML     71K 
                Segment EBITDA to Net Income                                     
56: R46         Changes in Accumulated Other Comprehensive Income   HTML     42K 
                (Details) - Summary of Changes in Accumulated                    
                Other Comprehensive Income                                       
57: R47         Income Taxes (Details)                              HTML     26K 
58: R48         Guarantor Non-Guarantor Subsidiary Financial        HTML     32K 
                Information Level 4 (Details) - Additional                       
                Information                                                      
59: R49         Guarantor Non-Guarantor Subsidiary Financial        HTML    212K 
                Information (Details) - Consolidating Balance                    
                Sheets                                                           
60: R50         Guarantor Non-Guarantor Subsidiary Financial        HTML    122K 
                Information (Details) - Consolidating Statement of               
                Operations                                                       
61: R51         Guarantor Non-Guarantor Subsidiary Financial        HTML     91K 
                Information (Details) - Consolidating Statement of               
                Cash Flows                                                       
63: XML         IDEA XML File -- Filing Summary                      XML    116K 
62: EXCEL       IDEA Workbook of Financial Reports                  XLSX     81K 
 5: EX-101.INS  XBRL Instance -- msc-20180630                        XML   4.28M 
 7: EX-101.CAL  XBRL Calculations -- msc-20180630_cal                XML    152K 
 8: EX-101.DEF  XBRL Definitions -- msc-20180630_def                 XML    708K 
 9: EX-101.LAB  XBRL Labels -- msc-20180630_lab                      XML   1.22M 
10: EX-101.PRE  XBRL Presentations -- msc-20180630_pre               XML    846K 
 6: EX-101.SCH  XBRL Schema -- msc-20180630                          XSD    142K 
64: ZIP         XBRL Zipped Folder -- 0000013239-18-000019-xbrl      Zip    252K

‘EX-101.LAB’ — XBRL Labels — msc-20180630_lab

This Exhibit is an XBRL XML File.

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<link:label id="lab_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_26608406E8A1CFA5AF27C89C9462C248_label_en-US" xlink:label="lab_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_26608406E8A1CFA5AF27C89C9462C248" 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_26608406E8A1CFA5AF27C89C9462C248_documentation_en-US" xlink:label="lab_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_26608406E8A1CFA5AF27C89C9462C248" 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-20180630.xsd#msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock" xlink:label="loc_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_26608406E8A1CFA5AF27C89C9462C248" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_26608406E8A1CFA5AF27C89C9462C248" xlink:to="lab_msc_GuarantorNonGuarantorSubsidaryFinancialDataTextBlock_26608406E8A1CFA5AF27C89C9462C248" xlink:type="arc"/>

<link:label id="lab_msc_RestructuringandCostReductionProgramsAbstract_E0702EE65EAADE6EE3BF1095822297E4_label_en-US" xlink:label="lab_msc_RestructuringandCostReductionProgramsAbstract_E0702EE65EAADE6EE3BF1095822297E4" 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_E0702EE65EAADE6EE3BF1095822297E4_documentation_en-US" xlink:label="lab_msc_RestructuringandCostReductionProgramsAbstract_E0702EE65EAADE6EE3BF1095822297E4" 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-20180630.xsd#msc_RestructuringandCostReductionProgramsAbstract" xlink:label="loc_msc_RestructuringandCostReductionProgramsAbstract_E0702EE65EAADE6EE3BF1095822297E4" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_RestructuringandCostReductionProgramsAbstract_E0702EE65EAADE6EE3BF1095822297E4" xlink:to="lab_msc_RestructuringandCostReductionProgramsAbstract_E0702EE65EAADE6EE3BF1095822297E4" xlink:type="arc"/>

<link:label id="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_562B5212A4EEDA1A551510958222F004_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_562B5212A4EEDA1A551510958222F004" 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_562B5212A4EEDA1A551510958222F004_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_562B5212A4EEDA1A551510958222F004" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_562B5212A4EEDA1A551510958222F004" xlink:type="locator"/>

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<link:label id="lab_us-gaap_StatementBusinessSegmentsAxis_B53BBDD0699C27D27927109582226159_label_en-US" xlink:label="lab_us-gaap_StatementBusinessSegmentsAxis_B53BBDD0699C27D27927109582226159" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segments [Axis] </link:label>

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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_B53BBDD0699C27D27927109582226159" xlink:to="lab_us-gaap_StatementBusinessSegmentsAxis_B53BBDD0699C27D27927109582226159" xlink:type="arc"/>

<link:label id="lab_us-gaap_SegmentDomain_4E12101832B06062D95C109582220290_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentDomain_4E12101832B06062D95C109582220290" 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_4E12101832B06062D95C109582220290_label_en-US" xlink:label="lab_us-gaap_SegmentDomain_4E12101832B06062D95C109582220290" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_4E12101832B06062D95C109582220290" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentDomain_4E12101832B06062D95C109582220290" xlink:to="lab_us-gaap_SegmentDomain_4E12101832B06062D95C109582220290" xlink:type="arc"/>

<link:label id="lab_msc_EpcdMember_092E8DF1BC0EC7BF5C3B10958222542B_terseLabel_en-US" xlink:label="lab_msc_EpcdMember_092E8DF1BC0EC7BF5C3B10958222542B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Epoxy, Phenolic and Coating Resins </link:label>

<link:label id="lab_msc_EpcdMember_092E8DF1BC0EC7BF5C3B10958222542B_label_en-US" xlink:label="lab_msc_EpcdMember_092E8DF1BC0EC7BF5C3B10958222542B" 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_092E8DF1BC0EC7BF5C3B10958222542B_documentation_en-US" xlink:label="lab_msc_EpcdMember_092E8DF1BC0EC7BF5C3B10958222542B" 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-20180630.xsd#msc_EpcdMember" xlink:label="loc_msc_EpcdMember_092E8DF1BC0EC7BF5C3B10958222542B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_EpcdMember_092E8DF1BC0EC7BF5C3B10958222542B" xlink:to="lab_msc_EpcdMember_092E8DF1BC0EC7BF5C3B10958222542B" xlink:type="arc"/>

<link:label id="lab_msc_FpdMember_93AA783C4B51E9C7AF0E10958222460D_terseLabel_en-US" xlink:label="lab_msc_FpdMember_93AA783C4B51E9C7AF0E10958222460D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Forest Products Resins </link:label>

<link:label id="lab_msc_FpdMember_93AA783C4B51E9C7AF0E10958222460D_label_en-US" xlink:label="lab_msc_FpdMember_93AA783C4B51E9C7AF0E10958222460D" 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_93AA783C4B51E9C7AF0E10958222460D_documentation_en-US" xlink:label="lab_msc_FpdMember_93AA783C4B51E9C7AF0E10958222460D" 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-20180630.xsd#msc_FpdMember" xlink:label="loc_msc_FpdMember_93AA783C4B51E9C7AF0E10958222460D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_FpdMember_93AA783C4B51E9C7AF0E10958222460D" xlink:to="lab_msc_FpdMember_93AA783C4B51E9C7AF0E10958222460D" xlink:type="arc"/>

<link:label id="lab_us-gaap_CorporateAndOtherMember_177598BEACB0B1ABA094109582226610_terseLabel_en-US" xlink:label="lab_us-gaap_CorporateAndOtherMember_177598BEACB0B1ABA094109582226610" 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_177598BEACB0B1ABA094109582226610_label_en-US" xlink:label="lab_us-gaap_CorporateAndOtherMember_177598BEACB0B1ABA094109582226610" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateAndOtherMember" xlink:label="loc_us-gaap_CorporateAndOtherMember_177598BEACB0B1ABA094109582226610" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CorporateAndOtherMember_177598BEACB0B1ABA094109582226610" xlink:to="lab_us-gaap_CorporateAndOtherMember_177598BEACB0B1ABA094109582226610" xlink:type="arc"/>

<link:label id="lab_us-gaap_RestructuringCostAndReserveAxis_9A65274BBA1A418BD3A410958222C2EF_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringCostAndReserveAxis_9A65274BBA1A418BD3A410958222C2EF" 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_9A65274BBA1A418BD3A410958222C2EF_label_en-US" xlink:label="lab_us-gaap_RestructuringCostAndReserveAxis_9A65274BBA1A418BD3A410958222C2EF" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_9A65274BBA1A418BD3A410958222C2EF" xlink:type="locator"/>

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<link:label id="lab_us-gaap_TypeOfRestructuringDomain_33A7A90BF8CC3DBC6F2F10958222A72B_terseLabel_en-US" xlink:label="lab_us-gaap_TypeOfRestructuringDomain_33A7A90BF8CC3DBC6F2F10958222A72B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Type of Restructuring [Domain] </link:label>

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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainLossOnSaleOfBusiness" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_002DCA3A5BE7361EEFE0CDE7A1C2A3E1" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AssetImpairmentCharges_766ED6769E72099B2126CDE7A1C29D83_terseLabel_en-US" xlink:label="lab_us-gaap_AssetImpairmentCharges_766ED6769E72099B2126CDE7A1C29D83" 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_766ED6769E72099B2126CDE7A1C29D83_label_en-US" xlink:label="lab_us-gaap_AssetImpairmentCharges_766ED6769E72099B2126CDE7A1C29D83" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetImpairmentCharges" xlink:label="loc_us-gaap_AssetImpairmentCharges_766ED6769E72099B2126CDE7A1C29D83" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetImpairmentCharges_766ED6769E72099B2126CDE7A1C29D83" xlink:to="lab_us-gaap_AssetImpairmentCharges_766ED6769E72099B2126CDE7A1C29D83" xlink:type="arc"/>

<link:label id="lab_msc_BusinessRealignmentCosts_DE98240D35418BC48360CDE7A1C27D7D_negatedLabel_en-US" xlink:label="lab_msc_BusinessRealignmentCosts_DE98240D35418BC48360CDE7A1C27D7D" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Business realignment costs </link:label>

<link:label id="lab_msc_BusinessRealignmentCosts_DE98240D35418BC48360CDE7A1C27D7D_label_en-US" xlink:label="lab_msc_BusinessRealignmentCosts_DE98240D35418BC48360CDE7A1C27D7D" 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_DE98240D35418BC48360CDE7A1C27D7D_documentation_en-US" xlink:label="lab_msc_BusinessRealignmentCosts_DE98240D35418BC48360CDE7A1C27D7D" 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-20180630.xsd#msc_BusinessRealignmentCosts" xlink:label="loc_msc_BusinessRealignmentCosts_DE98240D35418BC48360CDE7A1C27D7D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_BusinessRealignmentCosts_DE98240D35418BC48360CDE7A1C27D7D" xlink:to="lab_msc_BusinessRealignmentCosts_DE98240D35418BC48360CDE7A1C27D7D" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherOperatingIncomeExpenseNet_C1D183EA70D21AAE07ABCDE7A1C34DA2_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_OtherOperatingIncomeExpenseNet_C1D183EA70D21AAE07ABCDE7A1C34DA2" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Other operating expense, net </link:label>

<link:label id="lab_us-gaap_OtherOperatingIncomeExpenseNet_C1D183EA70D21AAE07ABCDE7A1C34DA2_label_en-US" xlink:label="lab_us-gaap_OtherOperatingIncomeExpenseNet_C1D183EA70D21AAE07ABCDE7A1C34DA2" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherOperatingIncomeExpenseNet" xlink:label="loc_us-gaap_OtherOperatingIncomeExpenseNet_C1D183EA70D21AAE07ABCDE7A1C34DA2" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherOperatingIncomeExpenseNet_C1D183EA70D21AAE07ABCDE7A1C34DA2" xlink:to="lab_us-gaap_OtherOperatingIncomeExpenseNet_C1D183EA70D21AAE07ABCDE7A1C34DA2" xlink:type="arc"/>

<link:label id="lab_us-gaap_OperatingIncomeLoss_91AD7FA85E5AF73E1904CDE7A1C34C68_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_91AD7FA85E5AF73E1904CDE7A1C34C68" 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_91AD7FA85E5AF73E1904CDE7A1C34C68_label_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_91AD7FA85E5AF73E1904CDE7A1C34C68" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_91AD7FA85E5AF73E1904CDE7A1C34C68" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingIncomeLoss_91AD7FA85E5AF73E1904CDE7A1C34C68" xlink:to="lab_us-gaap_OperatingIncomeLoss_91AD7FA85E5AF73E1904CDE7A1C34C68" xlink:type="arc"/>

<link:label id="lab_us-gaap_InterestIncomeExpenseNet_8603BC5686AF9B137294CDE7A1C8184E_negatedLabel_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_8603BC5686AF9B137294CDE7A1C8184E" 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_8603BC5686AF9B137294CDE7A1C8184E_label_en-US" xlink:label="lab_us-gaap_InterestIncomeExpenseNet_8603BC5686AF9B137294CDE7A1C8184E" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_8603BC5686AF9B137294CDE7A1C8184E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestIncomeExpenseNet_8603BC5686AF9B137294CDE7A1C8184E" xlink:to="lab_us-gaap_InterestIncomeExpenseNet_8603BC5686AF9B137294CDE7A1C8184E" xlink:type="arc"/>

<link:label id="lab_msc_IntercompanyInterestExpenseIncome_DCA75CDCFE1CF3F41B65CDE7A1C94495_terseLabel_en-US" xlink:label="lab_msc_IntercompanyInterestExpenseIncome_DCA75CDCFE1CF3F41B65CDE7A1C94495" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intercompany interest (income) expense, net </link:label>

<link:label id="lab_msc_IntercompanyInterestExpenseIncome_DCA75CDCFE1CF3F41B65CDE7A1C94495_label_en-US" xlink:label="lab_msc_IntercompanyInterestExpenseIncome_DCA75CDCFE1CF3F41B65CDE7A1C94495" 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_DCA75CDCFE1CF3F41B65CDE7A1C94495_documentation_en-US" xlink:label="lab_msc_IntercompanyInterestExpenseIncome_DCA75CDCFE1CF3F41B65CDE7A1C94495" 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-20180630.xsd#msc_IntercompanyInterestExpenseIncome" xlink:label="loc_msc_IntercompanyInterestExpenseIncome_DCA75CDCFE1CF3F41B65CDE7A1C94495" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyInterestExpenseIncome_DCA75CDCFE1CF3F41B65CDE7A1C94495" xlink:to="lab_msc_IntercompanyInterestExpenseIncome_DCA75CDCFE1CF3F41B65CDE7A1C94495" xlink:type="arc"/>

<link:label id="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_9ED96C4262D2951C9876CDE7A1C9004E_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_9ED96C4262D2951C9876CDE7A1C9004E" 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_9ED96C4262D2951C9876CDE7A1C9004E_label_en-US" xlink:label="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_9ED96C4262D2951C9876CDE7A1C9004E" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_9ED96C4262D2951C9876CDE7A1C9004E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_9ED96C4262D2951C9876CDE7A1C9004E" xlink:to="lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_9ED96C4262D2951C9876CDE7A1C9004E" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_3167D85621959B193831CDE7A1C9B042_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_3167D85621959B193831CDE7A1C9B042" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Other non-operating expense (income), net </link:label>

<link:label id="lab_us-gaap_OtherNonoperatingIncomeExpense_3167D85621959B193831CDE7A1C9B042_label_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpense_3167D85621959B193831CDE7A1C9B042" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_3167D85621959B193831CDE7A1C9B042" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherNonoperatingIncomeExpense_3167D85621959B193831CDE7A1C9B042" xlink:to="lab_us-gaap_OtherNonoperatingIncomeExpense_3167D85621959B193831CDE7A1C9B042" xlink:type="arc"/>

<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0007B7F60ACCDE1EF8F4CDE7A1C92381_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0007B7F60ACCDE1EF8F4CDE7A1C92381" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> (Loss) income before tax and earnings from unconsolidated entities </link:label>

<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0007B7F60ACCDE1EF8F4CDE7A1C92381_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0007B7F60ACCDE1EF8F4CDE7A1C92381" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0007B7F60ACCDE1EF8F4CDE7A1C92381" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0007B7F60ACCDE1EF8F4CDE7A1C92381" xlink:to="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0007B7F60ACCDE1EF8F4CDE7A1C92381" xlink:type="arc"/>

<link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_63303A3E8062C2E71431CDE7A1C925BB_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_63303A3E8062C2E71431CDE7A1C925BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income tax expense (benefit) </link:label>

<link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_63303A3E8062C2E71431CDE7A1C925BB_label_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_63303A3E8062C2E71431CDE7A1C925BB" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_63303A3E8062C2E71431CDE7A1C925BB" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_63303A3E8062C2E71431CDE7A1C925BB" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefit_63303A3E8062C2E71431CDE7A1C925BB" xlink:type="arc"/>

<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_018B59BF2DC2C125AC8BCDE7A1CA576F_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_018B59BF2DC2C125AC8BCDE7A1CA576F" 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_018B59BF2DC2C125AC8BCDE7A1CA576F_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_018B59BF2DC2C125AC8BCDE7A1CA576F" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_018B59BF2DC2C125AC8BCDE7A1CA576F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_018B59BF2DC2C125AC8BCDE7A1CA576F" xlink:to="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_018B59BF2DC2C125AC8BCDE7A1CA576F" xlink:type="arc"/>

<link:label id="lab_us-gaap_IncomeLossFromEquityMethodInvestments_1397374853435D5072FFCDE7A1CADAF4_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromEquityMethodInvestments_1397374853435D5072FFCDE7A1CADAF4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Earnings from unconsolidated entities, net of taxes </link:label>

<link:label id="lab_us-gaap_IncomeLossFromEquityMethodInvestments_1397374853435D5072FFCDE7A1CADAF4_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromEquityMethodInvestments_1397374853435D5072FFCDE7A1CADAF4" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_1397374853435D5072FFCDE7A1CADAF4" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ProfitLoss_7A1E201D1B482D9991C8CDE7A1CA0175_terseLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_7A1E201D1B482D9991C8CDE7A1CA0175" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net loss </link:label>

<link:label id="lab_us-gaap_ProfitLoss_7A1E201D1B482D9991C8CDE7A1CA0175_label_en-US" xlink:label="lab_us-gaap_ProfitLoss_7A1E201D1B482D9991C8CDE7A1CA0175" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Income (Loss), Including Portion Attributable to Noncontrolling Interest </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_7A1E201D1B482D9991C8CDE7A1CA0175" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_3DB207A9892AD1783533CDE7A1CAF6E7_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_3DB207A9892AD1783533CDE7A1CAF6E7" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Net income attributable to noncontrolling interest </link:label>

<link:label id="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_3DB207A9892AD1783533CDE7A1CAF6E7_label_en-US" xlink:label="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_3DB207A9892AD1783533CDE7A1CAF6E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Income (Loss) Attributable to Noncontrolling Interest </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_3DB207A9892AD1783533CDE7A1CAF6E7" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_4C8C9AF2DAABBA311470CDE7A1CA5A18_terseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_4C8C9AF2DAABBA311470CDE7A1CA5A18" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest </link:label>

<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_4C8C9AF2DAABBA311470CDE7A1CA5A18_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_4C8C9AF2DAABBA311470CDE7A1CA5A18" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_4C8C9AF2DAABBA311470CDE7A1CA5A18" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NetIncomeLoss_CB876335A5A0F759F350CDE7A1CAE2F1_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_CB876335A5A0F759F350CDE7A1CAE2F1" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_CB876335A5A0F759F350CDE7A1CAE2F1" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_B62FD9661B9003040209CDE7A1CB7219_terseLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_B62FD9661B9003040209CDE7A1CB7219" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Comprehensive (loss) income attributable to Hexion Inc. </link:label>

<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTax_B62FD9661B9003040209CDE7A1CB7219_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTax_B62FD9661B9003040209CDE7A1CB7219" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_B62FD9661B9003040209CDE7A1CB7219" xlink:type="locator"/>

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<link:label id="lab_msc_BalanceSheetParentheticalAbstract_3F5F590F9D8D1A23D8B423D829831383_label_en-US" xlink:label="lab_msc_BalanceSheetParentheticalAbstract_3F5F590F9D8D1A23D8B423D829831383" 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_3F5F590F9D8D1A23D8B423D829831383_documentation_en-US" xlink:label="lab_msc_BalanceSheetParentheticalAbstract_3F5F590F9D8D1A23D8B423D829831383" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Balance Sheet Parenthetical [Abstract] </link:label>

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<link:label id="lab_us-gaap_StatementScenarioAxis_A386515B2A9EBA7E1D0E23D8298437CB_terseLabel_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_A386515B2A9EBA7E1D0E23D8298437CB" 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_A386515B2A9EBA7E1D0E23D8298437CB_label_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_A386515B2A9EBA7E1D0E23D8298437CB" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_A386515B2A9EBA7E1D0E23D8298437CB" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ScenarioUnspecifiedDomain_0EA4C34D3C83BCF9B24423D82984C89D_terseLabel_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_0EA4C34D3C83BCF9B24423D82984C89D" 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_0EA4C34D3C83BCF9B24423D82984C89D_label_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_0EA4C34D3C83BCF9B24423D82984C89D" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_0EA4C34D3C83BCF9B24423D82984C89D" xlink:type="locator"/>

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<link:label id="lab_us-gaap_StatementClassOfStockAxis_1B3A8040F20B8405231623D829840CB9_terseLabel_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_1B3A8040F20B8405231623D829840CB9" 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_1B3A8040F20B8405231623D829840CB9_label_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_1B3A8040F20B8405231623D829840CB9" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_1B3A8040F20B8405231623D829840CB9" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ClassOfStockDomain_084D912C38ACEF63A3DC23D82985A697_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_084D912C38ACEF63A3DC23D82985A697" 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_084D912C38ACEF63A3DC23D82985A697_label_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_084D912C38ACEF63A3DC23D82985A697" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_084D912C38ACEF63A3DC23D82985A697" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AssetsCurrentAbstract_E86807C524C305FAD1FB23D829854438_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_E86807C524C305FAD1FB23D829854438" 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_E86807C524C305FAD1FB23D829854438_label_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_E86807C524C305FAD1FB23D829854438" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_E86807C524C305FAD1FB23D829854438" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CashAndCashEquivalentsAbstract_CC7574A26976078F5E7323D829869BBD_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAbstract_CC7574A26976078F5E7323D829869BBD" 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_CC7574A26976078F5E7323D829869BBD_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAbstract_CC7574A26976078F5E7323D829869BBD" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAbstract" xlink:label="loc_us-gaap_CashAndCashEquivalentsAbstract_CC7574A26976078F5E7323D829869BBD" xlink:type="locator"/>

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<link:label id="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_0D3C985D62D16EFED52023D829862044_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_0D3C985D62D16EFED52023D829862044" 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_0D3C985D62D16EFED52023D829862044_label_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_0D3C985D62D16EFED52023D829862044" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_0D3C985D62D16EFED52023D829862044" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AccountsReceivableNetAbstract_D3EE2D44DFA9729A10EF23D829864F13_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetAbstract_D3EE2D44DFA9729A10EF23D829864F13" 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_D3EE2D44DFA9729A10EF23D829864F13_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetAbstract_D3EE2D44DFA9729A10EF23D829864F13" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetAbstract" xlink:label="loc_us-gaap_AccountsReceivableNetAbstract_D3EE2D44DFA9729A10EF23D829864F13" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_C879D704B19A0D2DEB8223D82986478D_terseLabel_en-US" xlink:label="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_C879D704B19A0D2DEB8223D82986478D" 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_C879D704B19A0D2DEB8223D82986478D_label_en-US" xlink:label="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_C879D704B19A0D2DEB8223D82986478D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Allowance for Doubtful Accounts Receivable, Current </link:label>

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<link:label id="lab_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_7558A8EF734C13BD569FF0DBB8D52D02_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_7558A8EF734C13BD569FF0DBB8D52D02" 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_7558A8EF734C13BD569FF0DBB8D52D02_label_en-US" xlink:label="lab_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_7558A8EF734C13BD569FF0DBB8D52D02" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_7558A8EF734C13BD569FF0DBB8D52D02" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ChangeInAccountingPrincipleMember_DE9073CA726F4BD72C8AF0DBB8D55A71_label_en-US" xlink:label="lab_us-gaap_ChangeInAccountingPrincipleMember_DE9073CA726F4BD72C8AF0DBB8D55A71" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_DE9073CA726F4BD72C8AF0DBB8D55A71" xlink:type="locator"/>

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<link:label id="lab_us-gaap_PreviousAccountingGuidanceMember_44009164999E495E1E39F0DBB8D67C14_terseLabel_en-US" xlink:label="lab_us-gaap_PreviousAccountingGuidanceMember_44009164999E495E1E39F0DBB8D67C14" 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_44009164999E495E1E39F0DBB8D67C14_label_en-US" xlink:label="lab_us-gaap_PreviousAccountingGuidanceMember_44009164999E495E1E39F0DBB8D67C14" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Previous Accounting Guidance [Member] </link:label>

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<link:label id="lab_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_01ED61BF91821B51434CF0DBB8D6CAC2_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_01ED61BF91821B51434CF0DBB8D6CAC2" 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_01ED61BF91821B51434CF0DBB8D6CAC2_label_en-US" xlink:label="lab_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_01ED61BF91821B51434CF0DBB8D6CAC2" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_01ED61BF91821B51434CF0DBB8D6CAC2" xlink:type="locator"/>

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<link:label id="lab_us-gaap_TypeOfAdoptionMember_3E70452DB788F2C56E98F0DBB8D79388_terseLabel_en-US" xlink:label="lab_us-gaap_TypeOfAdoptionMember_3E70452DB788F2C56E98F0DBB8D79388" 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_3E70452DB788F2C56E98F0DBB8D79388_label_en-US" xlink:label="lab_us-gaap_TypeOfAdoptionMember_3E70452DB788F2C56E98F0DBB8D79388" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_3E70452DB788F2C56E98F0DBB8D79388" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AssetsAbstract_37AF387B2FC62E8306D5F0DBB8D81E6A_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract_37AF387B2FC62E8306D5F0DBB8D81E6A" 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_37AF387B2FC62E8306D5F0DBB8D81E6A_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract_37AF387B2FC62E8306D5F0DBB8D81E6A" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_37AF387B2FC62E8306D5F0DBB8D81E6A" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A8C1E7AA5E72E37C2C6F0DBB8D9166A_terseLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A8C1E7AA5E72E37C2C6F0DBB8D9166A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash and cash equivalents (including restricted cash of $16 and $18, respectively) </link:label>

<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A8C1E7AA5E72E37C2C6F0DBB8D9166A_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A8C1E7AA5E72E37C2C6F0DBB8D9166A" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A8C1E7AA5E72E37C2C6F0DBB8D9166A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A8C1E7AA5E72E37C2C6F0DBB8D9166A" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_2A8C1E7AA5E72E37C2C6F0DBB8D9166A" xlink:type="arc"/>

<link:label id="lab_us-gaap_AccountsReceivableNet_D3D322741B4210CB6FA0F0DBB8D97453_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNet_D3D322741B4210CB6FA0F0DBB8D97453" 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 $18 and 19, respectively) </link:label>

<link:label id="lab_us-gaap_AccountsReceivableNet_D3D322741B4210CB6FA0F0DBB8D97453_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNet_D3D322741B4210CB6FA0F0DBB8D97453" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNet" xlink:label="loc_us-gaap_AccountsReceivableNet_D3D322741B4210CB6FA0F0DBB8D97453" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNet_D3D322741B4210CB6FA0F0DBB8D97453" xlink:to="lab_us-gaap_AccountsReceivableNet_D3D322741B4210CB6FA0F0DBB8D97453" xlink:type="arc"/>

<link:label id="lab_us-gaap_InventoryNetAbstract_0C62DF1FFC6D8B899B26F0DBB8DDE32C_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryNetAbstract_0C62DF1FFC6D8B899B26F0DBB8DDE32C" 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_0C62DF1FFC6D8B899B26F0DBB8DDE32C_label_en-US" xlink:label="lab_us-gaap_InventoryNetAbstract_0C62DF1FFC6D8B899B26F0DBB8DDE32C" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryNetAbstract" xlink:label="loc_us-gaap_InventoryNetAbstract_0C62DF1FFC6D8B899B26F0DBB8DDE32C" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves_5E5DB1015757CD4BC7A9F0DBB8DECE40_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves_5E5DB1015757CD4BC7A9F0DBB8DECE40" 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_5E5DB1015757CD4BC7A9F0DBB8DECE40_label_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves_5E5DB1015757CD4BC7A9F0DBB8DECE40" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves" xlink:label="loc_us-gaap_InventoryFinishedGoodsAndWorkInProcessNetOfReserves_5E5DB1015757CD4BC7A9F0DBB8DECE40" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves_7C8B1CF12CDFFE42A51EF0DBB8DE4872_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves_7C8B1CF12CDFFE42A51EF0DBB8DE4872" 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_7C8B1CF12CDFFE42A51EF0DBB8DE4872_label_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves_7C8B1CF12CDFFE42A51EF0DBB8DE4872" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves" xlink:label="loc_us-gaap_InventoryRawMaterialsAndSuppliesNetOfReserves_7C8B1CF12CDFFE42A51EF0DBB8DE4872" xlink:type="locator"/>

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<link:label id="lab_msc_Totalcurrentassetsheldforsale_CEA3AED5DFEE2B6C77D0F0DBB8DE706D_terseLabel_en-US" xlink:label="lab_msc_Totalcurrentassetsheldforsale_CEA3AED5DFEE2B6C77D0F0DBB8DE706D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current assets held for sale </link:label>

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<link:label id="lab_us-gaap_OtherAssetsCurrent_F314B4F048FF5E91D507F0DBB8DE23B7_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_F314B4F048FF5E91D507F0DBB8DE23B7" 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_F314B4F048FF5E91D507F0DBB8DE23B7_label_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_F314B4F048FF5E91D507F0DBB8DE23B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets, Current </link:label>

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<link:label id="lab_us-gaap_AssetsCurrent_A10F063F8A12A4F42FE6F0DBB8DFB72B_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_A10F063F8A12A4F42FE6F0DBB8DFB72B" 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_A10F063F8A12A4F42FE6F0DBB8DFB72B_label_en-US" xlink:label="lab_us-gaap_AssetsCurrent_A10F063F8A12A4F42FE6F0DBB8DFB72B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets, Current </link:label>

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<link:label id="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_45333874B9A9F8CF9BF6F0DBB8DFEA4B_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_45333874B9A9F8CF9BF6F0DBB8DFEA4B" 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_45333874B9A9F8CF9BF6F0DBB8DFEA4B_label_en-US" xlink:label="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_45333874B9A9F8CF9BF6F0DBB8DFEA4B" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_45333874B9A9F8CF9BF6F0DBB8DFEA4B" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DeferredTaxAssetsNet_AB55943C041A81A1CCE4F0DBB8DF5B5A_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsNet_AB55943C041A81A1CCE4F0DBB8DF5B5A" 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_AB55943C041A81A1CCE4F0DBB8DF5B5A_label_en-US" xlink:label="lab_us-gaap_DeferredTaxAssetsNet_AB55943C041A81A1CCE4F0DBB8DF5B5A" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_AB55943C041A81A1CCE4F0DBB8DF5B5A" xlink:type="locator"/>

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<link:label id="lab_msc_Totallongtermassetsheldforsale_059EDC45F4ED0FC03BF6F0DBB8DF8610_terseLabel_en-US" xlink:label="lab_msc_Totallongtermassetsheldforsale_059EDC45F4ED0FC03BF6F0DBB8DF8610" 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_059EDC45F4ED0FC03BF6F0DBB8DF8610_label_en-US" xlink:label="lab_msc_Totallongtermassetsheldforsale_059EDC45F4ED0FC03BF6F0DBB8DF8610" 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_059EDC45F4ED0FC03BF6F0DBB8DF8610_documentation_en-US" xlink:label="lab_msc_Totallongtermassetsheldforsale_059EDC45F4ED0FC03BF6F0DBB8DF8610" 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-20180630.xsd#msc_Totallongtermassetsheldforsale" xlink:label="loc_msc_Totallongtermassetsheldforsale_059EDC45F4ED0FC03BF6F0DBB8DF8610" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Totallongtermassetsheldforsale_059EDC45F4ED0FC03BF6F0DBB8DF8610" xlink:to="lab_msc_Totallongtermassetsheldforsale_059EDC45F4ED0FC03BF6F0DBB8DF8610" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherAssetsNoncurrent_B9BABAF99692D2424E70F0DBB8DFE59C_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_B9BABAF99692D2424E70F0DBB8DFE59C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other assets, net </link:label>

<link:label id="lab_us-gaap_OtherAssetsNoncurrent_B9BABAF99692D2424E70F0DBB8DFE59C_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_B9BABAF99692D2424E70F0DBB8DFE59C" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_B9BABAF99692D2424E70F0DBB8DFE59C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_B9BABAF99692D2424E70F0DBB8DFE59C" xlink:to="lab_us-gaap_OtherAssetsNoncurrent_B9BABAF99692D2424E70F0DBB8DFE59C" xlink:type="arc"/>

<link:label id="lab_us-gaap_PropertyPlantAndEquipmentAbstract_E210A34BC67AE074B8A8F0DBB8E0FF2E_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentAbstract_E210A34BC67AE074B8A8F0DBB8E0FF2E" 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_E210A34BC67AE074B8A8F0DBB8E0FF2E_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentAbstract_E210A34BC67AE074B8A8F0DBB8E0FF2E" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAbstract_E210A34BC67AE074B8A8F0DBB8E0FF2E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_Land_CFDC882E7B72D5673565F0DBB8E0B8D4_terseLabel_en-US" xlink:label="lab_us-gaap_Land_CFDC882E7B72D5673565F0DBB8E0B8D4" 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_CFDC882E7B72D5673565F0DBB8E0B8D4_label_en-US" xlink:label="lab_us-gaap_Land_CFDC882E7B72D5673565F0DBB8E0B8D4" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Land" xlink:label="loc_us-gaap_Land_CFDC882E7B72D5673565F0DBB8E0B8D4" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Land_CFDC882E7B72D5673565F0DBB8E0B8D4" xlink:to="lab_us-gaap_Land_CFDC882E7B72D5673565F0DBB8E0B8D4" xlink:type="arc"/>

<link:label id="lab_us-gaap_BuildingsAndImprovementsGross_F591853865F1884BC6CDF0DBB8E08100_terseLabel_en-US" xlink:label="lab_us-gaap_BuildingsAndImprovementsGross_F591853865F1884BC6CDF0DBB8E08100" 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_F591853865F1884BC6CDF0DBB8E08100_label_en-US" xlink:label="lab_us-gaap_BuildingsAndImprovementsGross_F591853865F1884BC6CDF0DBB8E08100" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BuildingsAndImprovementsGross" xlink:label="loc_us-gaap_BuildingsAndImprovementsGross_F591853865F1884BC6CDF0DBB8E08100" xlink:type="locator"/>

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<link:label id="lab_us-gaap_MachineryAndEquipmentGross_B4182A94D3FBAC2054EDF0DBB8E06B1A_terseLabel_en-US" xlink:label="lab_us-gaap_MachineryAndEquipmentGross_B4182A94D3FBAC2054EDF0DBB8E06B1A" 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_B4182A94D3FBAC2054EDF0DBB8E06B1A_label_en-US" xlink:label="lab_us-gaap_MachineryAndEquipmentGross_B4182A94D3FBAC2054EDF0DBB8E06B1A" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MachineryAndEquipmentGross" xlink:label="loc_us-gaap_MachineryAndEquipmentGross_B4182A94D3FBAC2054EDF0DBB8E06B1A" xlink:type="locator"/>

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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_92D0C837D070F3839679F0DBB8E1EE24_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_92D0C837D070F3839679F0DBB8E1EE24" 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_92D0C837D070F3839679F0DBB8E1EE24_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_92D0C837D070F3839679F0DBB8E1EE24" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_92D0C837D070F3839679F0DBB8E1EE24" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_AD128C6195017EB61CAFF0DBB8E14A46_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_AD128C6195017EB61CAFF0DBB8E14A46" 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_AD128C6195017EB61CAFF0DBB8E14A46_label_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_AD128C6195017EB61CAFF0DBB8E14A46" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_AD128C6195017EB61CAFF0DBB8E14A46" xlink:type="locator"/>

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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_C7A46AE24A8DA592438FF0DBB8E111FB_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_C7A46AE24A8DA592438FF0DBB8E111FB" 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_C7A46AE24A8DA592438FF0DBB8E111FB_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_C7A46AE24A8DA592438FF0DBB8E111FB" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_C7A46AE24A8DA592438FF0DBB8E111FB" xlink:type="locator"/>

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<link:label id="lab_us-gaap_Goodwill_5A16093B6AD6142CC653F0DBB8E1DDFE_terseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_5A16093B6AD6142CC653F0DBB8E1DDFE" 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_5A16093B6AD6142CC653F0DBB8E1DDFE_label_en-US" xlink:label="lab_us-gaap_Goodwill_5A16093B6AD6142CC653F0DBB8E1DDFE" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_5A16093B6AD6142CC653F0DBB8E1DDFE" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_A8B3AE7FDE722E1EAB3EF0DBB8E1C3F5_terseLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_A8B3AE7FDE722E1EAB3EF0DBB8E1C3F5" 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_A8B3AE7FDE722E1EAB3EF0DBB8E1C3F5_label_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_A8B3AE7FDE722E1EAB3EF0DBB8E1C3F5" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_A8B3AE7FDE722E1EAB3EF0DBB8E1C3F5" xlink:type="locator"/>

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<link:label id="lab_us-gaap_Assets_3116A86DFBDE29B8FC7DF0DBB8E19218_terseLabel_en-US" xlink:label="lab_us-gaap_Assets_3116A86DFBDE29B8FC7DF0DBB8E19218" 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_3116A86DFBDE29B8FC7DF0DBB8E19218_label_en-US" xlink:label="lab_us-gaap_Assets_3116A86DFBDE29B8FC7DF0DBB8E19218" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_3116A86DFBDE29B8FC7DF0DBB8E19218" xlink:type="locator"/>

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<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_618DAC2048D6B1BA6D04F0DBB8E2DE62_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_618DAC2048D6B1BA6D04F0DBB8E2DE62" 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_618DAC2048D6B1BA6D04F0DBB8E2DE62_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_618DAC2048D6B1BA6D04F0DBB8E2DE62" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities and Equity [Abstract] </link:label>

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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_618DAC2048D6B1BA6D04F0DBB8E2DE62" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_618DAC2048D6B1BA6D04F0DBB8E2DE62" xlink:type="arc"/>

<link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_781DB4526CD074E2242DF0DBB8E2DCA9_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_781DB4526CD074E2242DF0DBB8E2DCA9" 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_781DB4526CD074E2242DF0DBB8E2DCA9_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_781DB4526CD074E2242DF0DBB8E2DCA9" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_781DB4526CD074E2242DF0DBB8E2DCA9" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_781DB4526CD074E2242DF0DBB8E2DCA9" xlink:to="lab_us-gaap_LiabilitiesCurrentAbstract_781DB4526CD074E2242DF0DBB8E2DCA9" xlink:type="arc"/>

<link:label id="lab_us-gaap_AccountsPayableCurrent_F5BF80A61BE7EEC83F03F0DBB8E21B20_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_F5BF80A61BE7EEC83F03F0DBB8E21B20" 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_AccountsPayableCurrent_F5BF80A61BE7EEC83F03F0DBB8E21B20_label_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_F5BF80A61BE7EEC83F03F0DBB8E21B20" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_F5BF80A61BE7EEC83F03F0DBB8E21B20" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableCurrent_F5BF80A61BE7EEC83F03F0DBB8E21B20" xlink:to="lab_us-gaap_AccountsPayableCurrent_F5BF80A61BE7EEC83F03F0DBB8E21B20" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtCurrent_B4AF4E4B338FC529B94CF0DBB8E290AA_terseLabel_en-US" xlink:label="lab_us-gaap_DebtCurrent_B4AF4E4B338FC529B94CF0DBB8E290AA" 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_B4AF4E4B338FC529B94CF0DBB8E290AA_label_en-US" xlink:label="lab_us-gaap_DebtCurrent_B4AF4E4B338FC529B94CF0DBB8E290AA" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtCurrent" xlink:label="loc_us-gaap_DebtCurrent_B4AF4E4B338FC529B94CF0DBB8E290AA" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtCurrent_B4AF4E4B338FC529B94CF0DBB8E290AA" xlink:to="lab_us-gaap_DebtCurrent_B4AF4E4B338FC529B94CF0DBB8E290AA" xlink:type="arc"/>

<link:label id="lab_us-gaap_InterestPayableCurrent_FFD726BCCA5B2C4BA559F0DBB8E22DCF_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPayableCurrent_FFD726BCCA5B2C4BA559F0DBB8E22DCF" 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_FFD726BCCA5B2C4BA559F0DBB8E22DCF_label_en-US" xlink:label="lab_us-gaap_InterestPayableCurrent_FFD726BCCA5B2C4BA559F0DBB8E22DCF" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:label="loc_us-gaap_InterestPayableCurrent_FFD726BCCA5B2C4BA559F0DBB8E22DCF" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestPayableCurrent_FFD726BCCA5B2C4BA559F0DBB8E22DCF" xlink:to="lab_us-gaap_InterestPayableCurrent_FFD726BCCA5B2C4BA559F0DBB8E22DCF" xlink:type="arc"/>

<link:label id="lab_us-gaap_TaxesPayableCurrent_FD4E686B403BC4CA012BF0DBB8E33C60_terseLabel_en-US" xlink:label="lab_us-gaap_TaxesPayableCurrent_FD4E686B403BC4CA012BF0DBB8E33C60" 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_FD4E686B403BC4CA012BF0DBB8E33C60_label_en-US" xlink:label="lab_us-gaap_TaxesPayableCurrent_FD4E686B403BC4CA012BF0DBB8E33C60" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TaxesPayableCurrent" xlink:label="loc_us-gaap_TaxesPayableCurrent_FD4E686B403BC4CA012BF0DBB8E33C60" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TaxesPayableCurrent_FD4E686B403BC4CA012BF0DBB8E33C60" xlink:to="lab_us-gaap_TaxesPayableCurrent_FD4E686B403BC4CA012BF0DBB8E33C60" xlink:type="arc"/>

<link:label id="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_E28405B5F9F3F8BA122AF0DBB8E35ACB_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_E28405B5F9F3F8BA122AF0DBB8E35ACB" 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_E28405B5F9F3F8BA122AF0DBB8E35ACB_label_en-US" xlink:label="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_E28405B5F9F3F8BA122AF0DBB8E35ACB" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_E28405B5F9F3F8BA122AF0DBB8E35ACB" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_E28405B5F9F3F8BA122AF0DBB8E35ACB" xlink:to="lab_us-gaap_EmployeeRelatedLiabilitiesCurrent_E28405B5F9F3F8BA122AF0DBB8E35ACB" xlink:type="arc"/>

<link:label id="lab_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_610B51B94883111D7D78F0DBB8E38ABE_terseLabel_en-US" xlink:label="lab_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_610B51B94883111D7D78F0DBB8E38ABE" 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_610B51B94883111D7D78F0DBB8E38ABE_label_en-US" xlink:label="lab_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_610B51B94883111D7D78F0DBB8E38ABE" 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_610B51B94883111D7D78F0DBB8E38ABE_documentation_en-US" xlink:label="lab_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_610B51B94883111D7D78F0DBB8E38ABE" 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-20180630.xsd#msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale" xlink:label="loc_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_610B51B94883111D7D78F0DBB8E38ABE" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_610B51B94883111D7D78F0DBB8E38ABE" xlink:to="lab_msc_Totalcurrentliabilitiesassociatedwithassetsheldforsale_610B51B94883111D7D78F0DBB8E38ABE" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherLiabilitiesCurrent_20364890B5FD3C4D5C68F0DBB8E38E95_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesCurrent_20364890B5FD3C4D5C68F0DBB8E38E95" 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_20364890B5FD3C4D5C68F0DBB8E38E95_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesCurrent_20364890B5FD3C4D5C68F0DBB8E38E95" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_20364890B5FD3C4D5C68F0DBB8E38E95" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_20364890B5FD3C4D5C68F0DBB8E38E95" xlink:to="lab_us-gaap_OtherLiabilitiesCurrent_20364890B5FD3C4D5C68F0DBB8E38E95" xlink:type="arc"/>

<link:label id="lab_us-gaap_LiabilitiesCurrent_E1AF536CA256FE24803AF0DBB8E3F598_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_E1AF536CA256FE24803AF0DBB8E3F598" 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_E1AF536CA256FE24803AF0DBB8E3F598_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_E1AF536CA256FE24803AF0DBB8E3F598" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_E1AF536CA256FE24803AF0DBB8E3F598" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_E1AF536CA256FE24803AF0DBB8E3F598" xlink:to="lab_us-gaap_LiabilitiesCurrent_E1AF536CA256FE24803AF0DBB8E3F598" xlink:type="arc"/>

<link:label id="lab_us-gaap_LiabilitiesNoncurrentAbstract_3D66F2286DAA3638DBD5F0DBB8E36EAD_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesNoncurrentAbstract_3D66F2286DAA3638DBD5F0DBB8E36EAD" 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_3D66F2286DAA3638DBD5F0DBB8E36EAD_label_en-US" xlink:label="lab_us-gaap_LiabilitiesNoncurrentAbstract_3D66F2286DAA3638DBD5F0DBB8E36EAD" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_3D66F2286DAA3638DBD5F0DBB8E36EAD" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_3D66F2286DAA3638DBD5F0DBB8E36EAD" xlink:to="lab_us-gaap_LiabilitiesNoncurrentAbstract_3D66F2286DAA3638DBD5F0DBB8E36EAD" xlink:type="arc"/>

<link:label id="lab_us-gaap_LongTermDebtNoncurrent_828DDF798E119D93BD38F0DBB8E43971_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_828DDF798E119D93BD38F0DBB8E43971" 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_828DDF798E119D93BD38F0DBB8E43971_label_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_828DDF798E119D93BD38F0DBB8E43971" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_828DDF798E119D93BD38F0DBB8E43971" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtNoncurrent_828DDF798E119D93BD38F0DBB8E43971" xlink:to="lab_us-gaap_LongTermDebtNoncurrent_828DDF798E119D93BD38F0DBB8E43971" xlink:type="arc"/>

<link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_62988E70482A470640E2F0DBB8E418CD_terseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_62988E70482A470640E2F0DBB8E418CD" 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_62988E70482A470640E2F0DBB8E418CD_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_62988E70482A470640E2F0DBB8E418CD" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_62988E70482A470640E2F0DBB8E418CD" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_62988E70482A470640E2F0DBB8E418CD" xlink:to="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_62988E70482A470640E2F0DBB8E418CD" xlink:type="arc"/>

<link:label id="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_5D86C4CDD56A5271273AF0DBB8E42753_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_5D86C4CDD56A5271273AF0DBB8E42753" 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_5D86C4CDD56A5271273AF0DBB8E42753_label_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_5D86C4CDD56A5271273AF0DBB8E42753" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_5D86C4CDD56A5271273AF0DBB8E42753" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesNoncurrent_5D86C4CDD56A5271273AF0DBB8E42753" xlink:to="lab_us-gaap_DeferredTaxLiabilitiesNoncurrent_5D86C4CDD56A5271273AF0DBB8E42753" xlink:type="arc"/>

<link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_BCEABCA3B6B48A67CE9FF0DBB8E455FD_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_BCEABCA3B6B48A67CE9FF0DBB8E455FD" 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_BCEABCA3B6B48A67CE9FF0DBB8E455FD_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_BCEABCA3B6B48A67CE9FF0DBB8E455FD" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_BCEABCA3B6B48A67CE9FF0DBB8E455FD" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_BCEABCA3B6B48A67CE9FF0DBB8E455FD" xlink:to="lab_us-gaap_OtherLiabilitiesNoncurrent_BCEABCA3B6B48A67CE9FF0DBB8E455FD" xlink:type="arc"/>

<link:label id="lab_us-gaap_Liabilities_4C668E8473624F2BA6BCF0DBB8E4E13E_terseLabel_en-US" xlink:label="lab_us-gaap_Liabilities_4C668E8473624F2BA6BCF0DBB8E4E13E" 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_4C668E8473624F2BA6BCF0DBB8E4E13E_label_en-US" xlink:label="lab_us-gaap_Liabilities_4C668E8473624F2BA6BCF0DBB8E4E13E" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_4C668E8473624F2BA6BCF0DBB8E4E13E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_4C668E8473624F2BA6BCF0DBB8E4E13E" xlink:to="lab_us-gaap_Liabilities_4C668E8473624F2BA6BCF0DBB8E4E13E" xlink:type="arc"/>

<link:label id="lab_us-gaap_CommitmentsAndContingencies_7A3D79C5EA0C1D0ECFE5F0DBB8E50096_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_7A3D79C5EA0C1D0ECFE5F0DBB8E50096" 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_7A3D79C5EA0C1D0ECFE5F0DBB8E50096_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_7A3D79C5EA0C1D0ECFE5F0DBB8E50096" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commitments and Contingencies </link:label>

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<link:label id="lab_us-gaap_EquityAbstract_F61F37E2A2F889C95B6AF0DBB8E55718_terseLabel_en-US" xlink:label="lab_us-gaap_EquityAbstract_F61F37E2A2F889C95B6AF0DBB8E55718" 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_F61F37E2A2F889C95B6AF0DBB8E55718_label_en-US" xlink:label="lab_us-gaap_EquityAbstract_F61F37E2A2F889C95B6AF0DBB8E55718" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity [Abstract] </link:label>

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<link:label id="lab_us-gaap_CommonStockValue_529EF582481BA03F0D8FF0DBB8E51D01_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue_529EF582481BA03F0D8FF0DBB8E51D01" 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 June 30, 2018 and December 31, 2017 </link:label>

<link:label id="lab_us-gaap_CommonStockValue_529EF582481BA03F0D8FF0DBB8E51D01_label_en-US" xlink:label="lab_us-gaap_CommonStockValue_529EF582481BA03F0D8FF0DBB8E51D01" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_529EF582481BA03F0D8FF0DBB8E51D01" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_9A1D5095764EB202AC6FF0DBB8E56DBB_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_9A1D5095764EB202AC6FF0DBB8E56DBB" 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_9A1D5095764EB202AC6FF0DBB8E56DBB_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_9A1D5095764EB202AC6FF0DBB8E56DBB" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_9A1D5095764EB202AC6FF0DBB8E56DBB" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalCommonStock_9A1D5095764EB202AC6FF0DBB8E56DBB" xlink:to="lab_us-gaap_AdditionalPaidInCapitalCommonStock_9A1D5095764EB202AC6FF0DBB8E56DBB" xlink:type="arc"/>

<link:label id="lab_us-gaap_TreasuryStockValue_C483D6D8351D726293D2F0DBB8E53C11_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockValue_C483D6D8351D726293D2F0DBB8E53C11" 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_C483D6D8351D726293D2F0DBB8E53C11_label_en-US" xlink:label="lab_us-gaap_TreasuryStockValue_C483D6D8351D726293D2F0DBB8E53C11" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="loc_us-gaap_TreasuryStockValue_C483D6D8351D726293D2F0DBB8E53C11" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_CF159962C29BC00D2288F0DBB8E64AF9_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_CF159962C29BC00D2288F0DBB8E64AF9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated other comprehensive loss </link:label>

<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_CF159962C29BC00D2288F0DBB8E64AF9_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_CF159962C29BC00D2288F0DBB8E64AF9" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_CF159962C29BC00D2288F0DBB8E64AF9" xlink:type="locator"/>

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<link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_08736CBA7A7EBAA1D2ECF0DBB8E62E78_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_08736CBA7A7EBAA1D2ECF0DBB8E62E78" 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_08736CBA7A7EBAA1D2ECF0DBB8E62E78_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_08736CBA7A7EBAA1D2ECF0DBB8E62E78" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_08736CBA7A7EBAA1D2ECF0DBB8E62E78" xlink:type="locator"/>

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<link:label id="lab_us-gaap_StockholdersEquity_C94C32E6CECA0434EEE7F0DBB8E64FAE_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_C94C32E6CECA0434EEE7F0DBB8E64FAE" 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_C94C32E6CECA0434EEE7F0DBB8E64FAE_label_en-US" xlink:label="lab_us-gaap_StockholdersEquity_C94C32E6CECA0434EEE7F0DBB8E64FAE" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_C94C32E6CECA0434EEE7F0DBB8E64FAE" xlink:type="locator"/>

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<link:label id="lab_us-gaap_MinorityInterest_BE7F5A286793B9B3F62BF0DBB8E6A6C8_terseLabel_en-US" xlink:label="lab_us-gaap_MinorityInterest_BE7F5A286793B9B3F62BF0DBB8E6A6C8" 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_BE7F5A286793B9B3F62BF0DBB8E6A6C8_label_en-US" xlink:label="lab_us-gaap_MinorityInterest_BE7F5A286793B9B3F62BF0DBB8E6A6C8" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MinorityInterest" xlink:label="loc_us-gaap_MinorityInterest_BE7F5A286793B9B3F62BF0DBB8E6A6C8" xlink:type="locator"/>

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<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_EB0CBF9A7137877B117BF0DBB8E67B74_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_EB0CBF9A7137877B117BF0DBB8E67B74" 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_EB0CBF9A7137877B117BF0DBB8E67B74_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_EB0CBF9A7137877B117BF0DBB8E67B74" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_EB0CBF9A7137877B117BF0DBB8E67B74" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_EB0CBF9A7137877B117BF0DBB8E67B74" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_EB0CBF9A7137877B117BF0DBB8E67B74" xlink:type="arc"/>

<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_75095D0D1318BA4E9C55F0DBB8E785CA_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_75095D0D1318BA4E9C55F0DBB8E785CA" 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_75095D0D1318BA4E9C55F0DBB8E785CA_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_75095D0D1318BA4E9C55F0DBB8E785CA" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_75095D0D1318BA4E9C55F0DBB8E785CA" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueDisclosuresAbstract_B88D033200E6A668F0A0CDE7A3B1092F_label_en-US" xlink:label="lab_us-gaap_FairValueDisclosuresAbstract_B88D033200E6A668F0A0CDE7A3B1092F" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_B88D033200E6A668F0A0CDE7A3B1092F" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTable_A8BBC6DA05E7E82B8BACCDE7A3B1B4C0_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTable_A8BBC6DA05E7E82B8BACCDE7A3B1B4C0" 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_A8BBC6DA05E7E82B8BACCDE7A3B1B4C0_label_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTable_A8BBC6DA05E7E82B8BACCDE7A3B1B4C0" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_A8BBC6DA05E7E82B8BACCDE7A3B1B4C0" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_1BD7C7412B9883902FB8CDE7A3B1C674_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_1BD7C7412B9883902FB8CDE7A3B1C674" 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_1BD7C7412B9883902FB8CDE7A3B1C674_label_en-US" xlink:label="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_1BD7C7412B9883902FB8CDE7A3B1C674" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Hierarchy and NAV [Axis] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_1BD7C7412B9883902FB8CDE7A3B1C674" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1B6FCD2BA5494E527985CDE7A3B2C05A_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1B6FCD2BA5494E527985CDE7A3B2C05A" 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_1B6FCD2BA5494E527985CDE7A3B2C05A_label_en-US" xlink:label="lab_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1B6FCD2BA5494E527985CDE7A3B2C05A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Hierarchy and NAV [Domain] </link:label>

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<link:label id="lab_us-gaap_FairValueInputsLevel1Member_E3BA4E6EDFB0535B1815CDE7A3B2D3FF_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel1Member_E3BA4E6EDFB0535B1815CDE7A3B2D3FF" 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_E3BA4E6EDFB0535B1815CDE7A3B2D3FF_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel1Member_E3BA4E6EDFB0535B1815CDE7A3B2D3FF" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_E3BA4E6EDFB0535B1815CDE7A3B2D3FF" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueInputsLevel2Member_EDBD1FE3F3DD0738DF01CDE7A3B26040_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member_EDBD1FE3F3DD0738DF01CDE7A3B26040" 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_EDBD1FE3F3DD0738DF01CDE7A3B26040_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member_EDBD1FE3F3DD0738DF01CDE7A3B26040" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_EDBD1FE3F3DD0738DF01CDE7A3B26040" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueInputsLevel3Member_735980DA128A2D3E529BCDE7A3B76882_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member_735980DA128A2D3E529BCDE7A3B76882" 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_735980DA128A2D3E529BCDE7A3B76882_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member_735980DA128A2D3E529BCDE7A3B76882" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_735980DA128A2D3E529BCDE7A3B76882" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_5F7708B2305678835C80CDE7A3B83D7B_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_5F7708B2305678835C80CDE7A3B83D7B" 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_5F7708B2305678835C80CDE7A3B83D7B_label_en-US" xlink:label="lab_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_5F7708B2305678835C80CDE7A3B83D7B" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_5F7708B2305678835C80CDE7A3B83D7B" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DebtLongtermAndShorttermCombinedAmount_5A0ECD09C34B2A3C2848CDE7A3B8064B_terseLabel_en-US" xlink:label="lab_us-gaap_DebtLongtermAndShorttermCombinedAmount_5A0ECD09C34B2A3C2848CDE7A3B8064B" 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_5A0ECD09C34B2A3C2848CDE7A3B8064B_label_en-US" xlink:label="lab_us-gaap_DebtLongtermAndShorttermCombinedAmount_5A0ECD09C34B2A3C2848CDE7A3B8064B" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtLongtermAndShorttermCombinedAmount" xlink:label="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_5A0ECD09C34B2A3C2848CDE7A3B8064B" xlink:type="locator"/>

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<link:label id="lab_us-gaap_LongTermDebtFairValue_A811152CAB41FC1A25B5CDE7A3B8B8B6_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_A811152CAB41FC1A25B5CDE7A3B8B8B6" 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_A811152CAB41FC1A25B5CDE7A3B8B8B6_label_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_A811152CAB41FC1A25B5CDE7A3B8B8B6" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="loc_us-gaap_LongTermDebtFairValue_A811152CAB41FC1A25B5CDE7A3B8B8B6" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DeferredFinanceCostsGross_B73DB82A93FC8FBB45E9CDE7A3B9E030_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsGross_B73DB82A93FC8FBB45E9CDE7A3B9E030" 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_B73DB82A93FC8FBB45E9CDE7A3B9E030_label_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsGross_B73DB82A93FC8FBB45E9CDE7A3B9E030" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredFinanceCostsGross" xlink:label="loc_us-gaap_DeferredFinanceCostsGross_B73DB82A93FC8FBB45E9CDE7A3B9E030" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AccountingPoliciesAbstract_A763A64DB80F297BDDFECD039EBAA3B4_label_en-US" xlink:label="lab_us-gaap_AccountingPoliciesAbstract_A763A64DB80F297BDDFECD039EBAA3B4" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_A763A64DB80F297BDDFECD039EBAA3B4" xlink:type="locator"/>

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<link:label id="lab_us-gaap_RevenueRecognitionPolicyTextBlock_80AB9662A547ECA7DBCECD039EBAF823_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRecognitionPolicyTextBlock_80AB9662A547ECA7DBCECD039EBAF823" 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_80AB9662A547ECA7DBCECD039EBAF823_label_en-US" xlink:label="lab_us-gaap_RevenueRecognitionPolicyTextBlock_80AB9662A547ECA7DBCECD039EBAF823" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="loc_us-gaap_RevenueRecognitionPolicyTextBlock_80AB9662A547ECA7DBCECD039EBAF823" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ShippingAndHandlingCostPolicyTextBlock_AFB6CD553594E48C1318CD039EBA9EEC_terseLabel_en-US" xlink:label="lab_us-gaap_ShippingAndHandlingCostPolicyTextBlock_AFB6CD553594E48C1318CD039EBA9EEC" 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_AFB6CD553594E48C1318CD039EBA9EEC_label_en-US" xlink:label="lab_us-gaap_ShippingAndHandlingCostPolicyTextBlock_AFB6CD553594E48C1318CD039EBA9EEC" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShippingAndHandlingCostPolicyTextBlock" xlink:label="loc_us-gaap_ShippingAndHandlingCostPolicyTextBlock_AFB6CD553594E48C1318CD039EBA9EEC" xlink:type="locator"/>

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<link:label id="lab_us-gaap_UseOfEstimates_C7DDC0FE626AE511A492CD039EBAD2A0_terseLabel_en-US" xlink:label="lab_us-gaap_UseOfEstimates_C7DDC0FE626AE511A492CD039EBAD2A0" 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_C7DDC0FE626AE511A492CD039EBAD2A0_label_en-US" xlink:label="lab_us-gaap_UseOfEstimates_C7DDC0FE626AE511A492CD039EBAD2A0" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="loc_us-gaap_UseOfEstimates_C7DDC0FE626AE511A492CD039EBAD2A0" xlink:type="locator"/>

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<link:label id="lab_us-gaap_SubsequentEventsPolicyPolicyTextBlock_18AF14D2C3F273125C97CD039EBA5B67_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventsPolicyPolicyTextBlock_18AF14D2C3F273125C97CD039EBA5B67" 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_18AF14D2C3F273125C97CD039EBA5B67_label_en-US" xlink:label="lab_us-gaap_SubsequentEventsPolicyPolicyTextBlock_18AF14D2C3F273125C97CD039EBA5B67" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_SubsequentEventsPolicyPolicyTextBlock_18AF14D2C3F273125C97CD039EBA5B67" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_39315AF9DF7766A39B84CD039EBA6103_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_39315AF9DF7766A39B84CD039EBA6103" 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>

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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="loc_us-gaap_CashAndCashEquivalentsPolicyTextBlock_39315AF9DF7766A39B84CD039EBA6103" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_18603AD6758DE2C07055CD039EC940B7_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_18603AD6758DE2C07055CD039EC940B7" 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>

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<link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_8004751CDD82A837061FCD039EC937E0_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_8004751CDD82A837061FCD039EC937E0" 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>

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<link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_1293BB1B13E03E345CD2F0DCDE305DB4_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_1293BB1B13E03E345CD2F0DCDE305DB4" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_1293BB1B13E03E345CD2F0DCDE305DB4" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_1293BB1B13E03E345CD2F0DCDE305DB4" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_1293BB1B13E03E345CD2F0DCDE305DB4" xlink:type="arc"/>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_584AA049FEB923479BECF0DCDE300645_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_584AA049FEB923479BECF0DCDE300645" 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_584AA049FEB923479BECF0DCDE300645_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_584AA049FEB923479BECF0DCDE300645" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_584AA049FEB923479BECF0DCDE300645" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_33A18841D77E9333A873F0DCDE31B9AE_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_33A18841D77E9333A873F0DCDE31B9AE" 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_33A18841D77E9333A873F0DCDE31B9AE_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_33A18841D77E9333A873F0DCDE31B9AE" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_33A18841D77E9333A873F0DCDE31B9AE" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_33A18841D77E9333A873F0DCDE31B9AE" xlink:to="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_33A18841D77E9333A873F0DCDE31B9AE" xlink:type="arc"/>

<link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_69764AC968689890B203F0DCDE312912_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_69764AC968689890B203F0DCDE312912" 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_69764AC968689890B203F0DCDE312912_label_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_69764AC968689890B203F0DCDE312912" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_69764AC968689890B203F0DCDE312912" xlink:type="locator"/>

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<link:label id="lab_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_580862695FEA606E20CEF0DCDE3122D8_terseLabel_en-US" xlink:label="lab_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_580862695FEA606E20CEF0DCDE3122D8" 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_580862695FEA606E20CEF0DCDE3122D8_label_en-US" xlink:label="lab_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_580862695FEA606E20CEF0DCDE3122D8" 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_580862695FEA606E20CEF0DCDE3122D8_documentation_en-US" xlink:label="lab_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_580862695FEA606E20CEF0DCDE3122D8" 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-20180630.xsd#msc_NonCashAssetImpairmentsAndAcceleratedDepreciation" xlink:label="loc_msc_NonCashAssetImpairmentsAndAcceleratedDepreciation_580862695FEA606E20CEF0DCDE3122D8" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_4F9AC8B02B3964BFDA2BF0DCDE32CB0E_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_4F9AC8B02B3964BFDA2BF0DCDE32CB0E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred tax benefit </link:label>

<link:label id="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_4F9AC8B02B3964BFDA2BF0DCDE32CB0E_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxExpenseBenefit_4F9AC8B02B3964BFDA2BF0DCDE32CB0E" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_4F9AC8B02B3964BFDA2BF0DCDE32CB0E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_GainLossOnDispositionOfAssets1_8DDC43007A48B109F620F0DCDE328972_terseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnDispositionOfAssets1_8DDC43007A48B109F620F0DCDE328972" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loss (gain) on sale of assets </link:label>

<link:label id="lab_us-gaap_GainLossOnDispositionOfAssets1_8DDC43007A48B109F620F0DCDE328972_label_en-US" xlink:label="lab_us-gaap_GainLossOnDispositionOfAssets1_8DDC43007A48B109F620F0DCDE328972" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets1" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_8DDC43007A48B109F620F0DCDE328972" xlink:type="locator"/>

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<link:label id="lab_us-gaap_GainLossOnSaleOfBusiness_2C396B4C5A8E45EB9C7FF0DCDE32095D_terseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfBusiness_2C396B4C5A8E45EB9C7FF0DCDE32095D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Gain on disposition </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainLossOnSaleOfBusiness" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_2C396B4C5A8E45EB9C7FF0DCDE32095D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnSaleOfBusiness_2C396B4C5A8E45EB9C7FF0DCDE32095D" xlink:to="lab_us-gaap_GainLossOnSaleOfBusiness_2C396B4C5A8E45EB9C7FF0DCDE32095D" xlink:type="arc"/>

<link:label id="lab_us-gaap_AmortizationOfFinancingCosts_3AB531491B74CC42E8F0F0DCDE32442E_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_3AB531491B74CC42E8F0F0DCDE32442E" 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_3AB531491B74CC42E8F0F0DCDE32442E_label_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_3AB531491B74CC42E8F0F0DCDE32442E" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfFinancingCosts" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_3AB531491B74CC42E8F0F0DCDE32442E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfFinancingCosts_3AB531491B74CC42E8F0F0DCDE32442E" xlink:to="lab_us-gaap_AmortizationOfFinancingCosts_3AB531491B74CC42E8F0F0DCDE32442E" xlink:type="arc"/>

<link:label id="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_A8FC6CA9C514D0FF80D6F0DCDE32A79E_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_A8FC6CA9C514D0FF80D6F0DCDE32A79E" 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_A8FC6CA9C514D0FF80D6F0DCDE32A79E_label_en-US" xlink:label="lab_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_A8FC6CA9C514D0FF80D6F0DCDE32A79E" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossUnrealized" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_A8FC6CA9C514D0FF80D6F0DCDE32A79E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_011F22B8DD18B96C8A23F0DCDE33A98C_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_011F22B8DD18B96C8A23F0DCDE33A98C" 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_011F22B8DD18B96C8A23F0DCDE33A98C_label_en-US" xlink:label="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_011F22B8DD18B96C8A23F0DCDE33A98C" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_011F22B8DD18B96C8A23F0DCDE33A98C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_011F22B8DD18B96C8A23F0DCDE33A98C" xlink:to="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_011F22B8DD18B96C8A23F0DCDE33A98C" xlink:type="arc"/>

<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract_9E6E75F575BE095C20E8F0DCDE33EA58_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract_9E6E75F575BE095C20E8F0DCDE33EA58" 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_9E6E75F575BE095C20E8F0DCDE33EA58_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract_9E6E75F575BE095C20E8F0DCDE33EA58" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract_9E6E75F575BE095C20E8F0DCDE33EA58" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract_9E6E75F575BE095C20E8F0DCDE33EA58" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNetAbstract_9E6E75F575BE095C20E8F0DCDE33EA58" xlink:type="arc"/>

<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_C3D4FF6754E38392D7C5F0DCDE337244_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_C3D4FF6754E38392D7C5F0DCDE337244" 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_C3D4FF6754E38392D7C5F0DCDE337244_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_C3D4FF6754E38392D7C5F0DCDE337244" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_C3D4FF6754E38392D7C5F0DCDE337244" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IncreaseDecreaseInInventories_55D4E14392F8A027C4E5F0DCDE336498_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_55D4E14392F8A027C4E5F0DCDE336498" 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_55D4E14392F8A027C4E5F0DCDE336498_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_55D4E14392F8A027C4E5F0DCDE336498" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_55D4E14392F8A027C4E5F0DCDE336498" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_0516F44D20F67A89F1F8F0DCDE33534E_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_0516F44D20F67A89F1F8F0DCDE33534E" 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_0516F44D20F67A89F1F8F0DCDE33534E_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_0516F44D20F67A89F1F8F0DCDE33534E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Accounts Payable </link:label>

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<link:label id="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_332FAC30C17FCBAFCFA5F0DCDE39D62C_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_332FAC30C17FCBAFCFA5F0DCDE39D62C" 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_332FAC30C17FCBAFCFA5F0DCDE39D62C_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_332FAC30C17FCBAFCFA5F0DCDE39D62C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Income Taxes Payable </link:label>

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<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_8031F2A5D9DFEDE6EFC4F0DCDE39709E_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_8031F2A5D9DFEDE6EFC4F0DCDE39709E" 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_8031F2A5D9DFEDE6EFC4F0DCDE39709E_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_8031F2A5D9DFEDE6EFC4F0DCDE39709E" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_8031F2A5D9DFEDE6EFC4F0DCDE39709E" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_6C9085C0BCFE5974820EF0DCDE39B8BC_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_6C9085C0BCFE5974820EF0DCDE39B8BC" 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_6C9085C0BCFE5974820EF0DCDE39B8BC_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_6C9085C0BCFE5974820EF0DCDE39B8BC" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_6C9085C0BCFE5974820EF0DCDE39B8BC" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_BB48A823EE362E7C3927F0DCDE39E08D_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_BB48A823EE362E7C3927F0DCDE39E08D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net cash used in operating activities </link:label>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_BB48A823EE362E7C3927F0DCDE39E08D_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_BB48A823EE362E7C3927F0DCDE39E08D" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_BB48A823EE362E7C3927F0DCDE39E08D" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6D4E0AD23C753C3F5C46F0DCDE397900_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6D4E0AD23C753C3F5C46F0DCDE397900" 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_6D4E0AD23C753C3F5C46F0DCDE397900_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6D4E0AD23C753C3F5C46F0DCDE397900" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6D4E0AD23C753C3F5C46F0DCDE397900" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6D4E0AD23C753C3F5C46F0DCDE397900" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_6D4E0AD23C753C3F5C46F0DCDE397900" xlink:type="arc"/>

<link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_E8228315AB7E536F1FD8F0DCDE3A32E9_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_E8228315AB7E536F1FD8F0DCDE3A32E9" 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_E8228315AB7E536F1FD8F0DCDE3A32E9_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_E8228315AB7E536F1FD8F0DCDE3A32E9" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_E8228315AB7E536F1FD8F0DCDE3A32E9" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_E8228315AB7E536F1FD8F0DCDE3A32E9" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_E8228315AB7E536F1FD8F0DCDE3A32E9" xlink:type="arc"/>

<link:label id="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_D35E23E5892201DCEEA5F0DCDE3ADA9D_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_D35E23E5892201DCEEA5F0DCDE3ADA9D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from disposition, net </link:label>

<link:label id="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_D35E23E5892201DCEEA5F0DCDE3ADA9D_label_en-US" xlink:label="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_D35E23E5892201DCEEA5F0DCDE3ADA9D" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_D35E23E5892201DCEEA5F0DCDE3ADA9D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_D35E23E5892201DCEEA5F0DCDE3ADA9D" xlink:to="lab_us-gaap_ProceedsFromDivestitureOfBusinesses_D35E23E5892201DCEEA5F0DCDE3ADA9D" xlink:type="arc"/>

<link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_6D1D04BA1F32D0F1279AF0DCDE3AF9C7_netLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_6D1D04BA1F32D0F1279AF0DCDE3AF9C7" 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_6D1D04BA1F32D0F1279AF0DCDE3AF9C7_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_6D1D04BA1F32D0F1279AF0DCDE3AF9C7" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_6D1D04BA1F32D0F1279AF0DCDE3AF9C7" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_503928DF6D562A8348A4F0DCDE3A7761_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_503928DF6D562A8348A4F0DCDE3A7761" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net cash (used in) provided by investing activities </link:label>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_503928DF6D562A8348A4F0DCDE3A7761_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_503928DF6D562A8348A4F0DCDE3A7761" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_503928DF6D562A8348A4F0DCDE3A7761" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4F1393B3CE6EE8DF04C4F0DCDE3B5E1F_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4F1393B3CE6EE8DF04C4F0DCDE3B5E1F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows provided by financing activities </link:label>

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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_4F1393B3CE6EE8DF04C4F0DCDE3B5E1F" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_895223BB9894D0A01470F0DCDE3B6998_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_895223BB9894D0A01470F0DCDE3B6998" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net short-term debt borrowings </link:label>

<link:label id="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_895223BB9894D0A01470F0DCDE3B6998_label_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebt_895223BB9894D0A01470F0DCDE3B6998" 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>

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<link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_AC2A6F1782503EDFF860F0DCDE3B35E6_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_AC2A6F1782503EDFF860F0DCDE3B35E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Borrowings of long-term debt </link:label>

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<link:label id="lab_us-gaap_PaymentsOfFinancingCosts_7DF49D83C761E8CB6BF7F0DCDE3C3FAA_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfFinancingCosts_7DF49D83C761E8CB6BF7F0DCDE3C3FAA" 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>

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<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_1C5C5711C223CAAC7CF6F0DCDE3CE582_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_1C5C5711C223CAAC7CF6F0DCDE3CE582" 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>

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<link:label id="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_B7647E5D20CC205ACF3BF0DCDE3C4054_terseLabel_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_B7647E5D20CC205ACF3BF0DCDE3C4054" 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_B7647E5D20CC205ACF3BF0DCDE3C4054_label_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_B7647E5D20CC205ACF3BF0DCDE3C4054" 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>

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<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_55416638DF5EC3A5D4DCF0DCDE3C469E_terseLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_55416638DF5EC3A5D4DCF0DCDE3C469E" 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_55416638DF5EC3A5D4DCF0DCDE3C469E_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_55416638DF5EC3A5D4DCF0DCDE3C469E" 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>

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<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_3E865C92C6CEFF05C5D0F0DCDE3C0B36_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_3E865C92C6CEFF05C5D0F0DCDE3C0B36" 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>

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<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_FF714BE2563A2A9DF73DF0DCDE3C61BC_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_FF714BE2563A2A9DF73DF0DCDE3C61BC" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_FF714BE2563A2A9DF73DF0DCDE3C61BC" xlink:type="locator"/>

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<link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_9B96B4DEBEEE863CE9FBF0DCDE3D7D16_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_9B96B4DEBEEE863CE9FBF0DCDE3D7D16" 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_9B96B4DEBEEE863CE9FBF0DCDE3D7D16_label_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_9B96B4DEBEEE863CE9FBF0DCDE3D7D16" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_9B96B4DEBEEE863CE9FBF0DCDE3D7D16" xlink:type="locator"/>

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<link:label id="lab_us-gaap_InterestPaidNet_7C3EB47DBB68310F22D9F0DCDE3D5475_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPaidNet_7C3EB47DBB68310F22D9F0DCDE3D5475" 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_7C3EB47DBB68310F22D9F0DCDE3D5475_label_en-US" xlink:label="lab_us-gaap_InterestPaidNet_7C3EB47DBB68310F22D9F0DCDE3D5475" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Paid, Excluding Capitalized Interest, Operating Activities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestPaidNet" xlink:label="loc_us-gaap_InterestPaidNet_7C3EB47DBB68310F22D9F0DCDE3D5475" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IncomeTaxesPaidNet_ADEE2D85D46B111EF389F0DCDE3DFD5A_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaidNet_ADEE2D85D46B111EF389F0DCDE3DFD5A" 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_ADEE2D85D46B111EF389F0DCDE3DFD5A_label_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaidNet_ADEE2D85D46B111EF389F0DCDE3DFD5A" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxesPaidNet" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_ADEE2D85D46B111EF389F0DCDE3DFD5A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxesPaidNet_ADEE2D85D46B111EF389F0DCDE3DFD5A" xlink:to="lab_us-gaap_IncomeTaxesPaidNet_ADEE2D85D46B111EF389F0DCDE3DFD5A" xlink:type="arc"/>

<link:label id="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_1E589AF8A1925A7D669A109C25B64CF5_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_1E589AF8A1925A7D669A109C25B64CF5" 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>

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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_1E589AF8A1925A7D669A109C25B64CF5" xlink:type="locator"/>

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<link:label id="lab_us-gaap_RetirementPlanTypeAxis_B5681DF6C384364ABB80109C25B681FE_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeAxis_B5681DF6C384364ABB80109C25B681FE" 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_B5681DF6C384364ABB80109C25B681FE_label_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeAxis_B5681DF6C384364ABB80109C25B681FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retirement Plan Type [Axis] </link:label>

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<link:label id="lab_us-gaap_RetirementPlanTypeDomain_F57425E1E259C6FEDB0F109C25B62C75_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeDomain_F57425E1E259C6FEDB0F109C25B62C75" 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_F57425E1E259C6FEDB0F109C25B62C75_label_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeDomain_F57425E1E259C6FEDB0F109C25B62C75" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retirement Plan Type [Domain] </link:label>

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<link:label id="lab_us-gaap_PensionPlansDefinedBenefitMember_A13809AE73D82972ECF7109C25B6DA3B_terseLabel_en-US" xlink:label="lab_us-gaap_PensionPlansDefinedBenefitMember_A13809AE73D82972ECF7109C25B6DA3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Pension Benefits </link:label>

<link:label id="lab_us-gaap_PensionPlansDefinedBenefitMember_A13809AE73D82972ECF7109C25B6DA3B_label_en-US" xlink:label="lab_us-gaap_PensionPlansDefinedBenefitMember_A13809AE73D82972ECF7109C25B6DA3B" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_A13809AE73D82972ECF7109C25B6DA3B" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_6C6D49CAEC7FB6CA87FD109C25B6AFCE_terseLabel_en-US" xlink:label="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_6C6D49CAEC7FB6CA87FD109C25B6AFCE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-Pension Postretirement Benefits </link:label>

<link:label id="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_6C6D49CAEC7FB6CA87FD109C25B6AFCE_label_en-US" xlink:label="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_6C6D49CAEC7FB6CA87FD109C25B6AFCE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Postretirement Benefits Plan [Member] </link:label>

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<link:label id="lab_us-gaap_RetirementPlanSponsorLocationAxis_8342A5C2C5BD2F8D1BE2109C25B64FCF_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanSponsorLocationAxis_8342A5C2C5BD2F8D1BE2109C25B64FCF" 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_8342A5C2C5BD2F8D1BE2109C25B64FCF_label_en-US" xlink:label="lab_us-gaap_RetirementPlanSponsorLocationAxis_8342A5C2C5BD2F8D1BE2109C25B64FCF" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_8342A5C2C5BD2F8D1BE2109C25B64FCF" xlink:type="locator"/>

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<link:label id="lab_us-gaap_RetirementPlanSponsorLocationDomain_CA20F5120FF0EE042D4D109C25B6D771_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanSponsorLocationDomain_CA20F5120FF0EE042D4D109C25B6D771" 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_CA20F5120FF0EE042D4D109C25B6D771_label_en-US" xlink:label="lab_us-gaap_RetirementPlanSponsorLocationDomain_CA20F5120FF0EE042D4D109C25B6D771" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_CA20F5120FF0EE042D4D109C25B6D771" xlink:type="locator"/>

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<link:label id="lab_country_US_F039224D1183386E96FA109C25B6AFFD_terseLabel_en-US" xlink:label="lab_country_US_F039224D1183386E96FA109C25B6AFFD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> U.S. Plans </link:label>

<link:label id="lab_country_US_F039224D1183386E96FA109C25B6AFFD_label_en-US" xlink:label="lab_country_US_F039224D1183386E96FA109C25B6AFFD" 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_F039224D1183386E96FA109C25B6AFFD" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_US_F039224D1183386E96FA109C25B6AFFD" xlink:to="lab_country_US_F039224D1183386E96FA109C25B6AFFD" xlink:type="arc"/>

<link:label id="lab_us-gaap_ForeignPlanMember_ABBDB414106BA3FA586C109C25B6485A_terseLabel_en-US" xlink:label="lab_us-gaap_ForeignPlanMember_ABBDB414106BA3FA586C109C25B6485A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-U.S. Plans </link:label>

<link:label id="lab_us-gaap_ForeignPlanMember_ABBDB414106BA3FA586C109C25B6485A_label_en-US" xlink:label="lab_us-gaap_ForeignPlanMember_ABBDB414106BA3FA586C109C25B6485A" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:label="loc_us-gaap_ForeignPlanMember_ABBDB414106BA3FA586C109C25B6485A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ForeignPlanMember_ABBDB414106BA3FA586C109C25B6485A" xlink:to="lab_us-gaap_ForeignPlanMember_ABBDB414106BA3FA586C109C25B6485A" xlink:type="arc"/>

<link:label id="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_5A41C5139403466CD193109C25B6F4B0_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_5A41C5139403466CD193109C25B6F4B0" 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_5A41C5139403466CD193109C25B6F4B0_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_5A41C5139403466CD193109C25B6F4B0" 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>

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<link:label id="lab_us-gaap_DefinedBenefitPlanServiceCost_0386462DFEE4765C2B61109C25B63248_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanServiceCost_0386462DFEE4765C2B61109C25B63248" 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_0386462DFEE4765C2B61109C25B63248_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanServiceCost_0386462DFEE4765C2B61109C25B63248" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_0386462DFEE4765C2B61109C25B63248" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DefinedBenefitPlanInterestCost_86CF892D81B64C66C918109C25B67879_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanInterestCost_86CF892D81B64C66C918109C25B67879" 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_86CF892D81B64C66C918109C25B67879_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanInterestCost_86CF892D81B64C66C918109C25B67879" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_86CF892D81B64C66C918109C25B67879" xlink:type="locator"/>

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<link:label id="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_9111850999DBC6BA927C109C25B61444_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_9111850999DBC6BA927C109C25B61444" 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_9111850999DBC6BA927C109C25B61444_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_9111850999DBC6BA927C109C25B61444" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_9111850999DBC6BA927C109C25B61444" xlink:type="locator"/>

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<link:label id="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_309846381A52AB124F13109C25B6AAF4_totalLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_309846381A52AB124F13109C25B6AAF4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net (benefit) expense </link:label>

<link:label id="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_309846381A52AB124F13109C25B6AAF4_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementBenefitExpense_309846381A52AB124F13109C25B6AAF4" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitExpense" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitExpense_309846381A52AB124F13109C25B6AAF4" xlink:type="locator"/>

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<link:label id="lab_msc_SummaryOfSignificantAccountingPoliciesTable_A8CD636682D2DD27F08010990DF76CF8_terseLabel_en-US" xlink:label="lab_msc_SummaryOfSignificantAccountingPoliciesTable_A8CD636682D2DD27F08010990DF76CF8" 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_A8CD636682D2DD27F08010990DF76CF8_label_en-US" xlink:label="lab_msc_SummaryOfSignificantAccountingPoliciesTable_A8CD636682D2DD27F08010990DF76CF8" 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_A8CD636682D2DD27F08010990DF76CF8_documentation_en-US" xlink:label="lab_msc_SummaryOfSignificantAccountingPoliciesTable_A8CD636682D2DD27F08010990DF76CF8" 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-20180630.xsd#msc_SummaryOfSignificantAccountingPoliciesTable" xlink:label="loc_msc_SummaryOfSignificantAccountingPoliciesTable_A8CD636682D2DD27F08010990DF76CF8" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NewAccountingPronouncementMember_DC54A8D89830C3CC86F910990DF7A14B_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementMember_DC54A8D89830C3CC86F910990DF7A14B" 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_DC54A8D89830C3CC86F910990DF7A14B_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementMember_DC54A8D89830C3CC86F910990DF7A14B" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="loc_us-gaap_NewAccountingPronouncementMember_DC54A8D89830C3CC86F910990DF7A14B" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FinancialInstrumentAxis_8CF74059D2BC4162E74C10990DF70DC6_terseLabel_en-US" xlink:label="lab_us-gaap_FinancialInstrumentAxis_8CF74059D2BC4162E74C10990DF70DC6" 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_8CF74059D2BC4162E74C10990DF70DC6_label_en-US" xlink:label="lab_us-gaap_FinancialInstrumentAxis_8CF74059D2BC4162E74C10990DF70DC6" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="loc_us-gaap_FinancialInstrumentAxis_8CF74059D2BC4162E74C10990DF70DC6" xlink:type="locator"/>

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<link:label id="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2C194C8EC1B0A6D8CB6C10990E06903C_terseLabel_en-US" xlink:label="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2C194C8EC1B0A6D8CB6C10990E06903C" 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_2C194C8EC1B0A6D8CB6C10990E06903C_label_en-US" xlink:label="lab_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2C194C8EC1B0A6D8CB6C10990E06903C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financial Instruments [Domain] </link:label>

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<link:label id="lab_us-gaap_ContractWithCustomerAssetNet_9D92C08AFE04CD39322D10990E065490_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNet_9D92C08AFE04CD39322D10990E065490" 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_9D92C08AFE04CD39322D10990E065490_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerAssetNet_9D92C08AFE04CD39322D10990E065490" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Asset, Net </link:label>

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<link:label id="lab_us-gaap_InventoryNet_FCE78D71196A9EA720FB10990E06D310_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_FCE78D71196A9EA720FB10990E06D310" 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_FCE78D71196A9EA720FB10990E06D310_label_en-US" xlink:label="lab_us-gaap_InventoryNet_FCE78D71196A9EA720FB10990E06D310" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Net </link:label>

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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInRestrictedCash" xlink:label="loc_us-gaap_IncreaseDecreaseInRestrictedCash_8CC854BC01CC190F655110990E068D48" xlink:type="locator"/>

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<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_B8394E10C06B10DBFE3010990E06CC78_terseLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_B8394E10C06B10DBFE3010990E06CC78" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect </link:label>

<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_B8394E10C06B10DBFE3010990E06CC78_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_B8394E10C06B10DBFE3010990E06CC78" 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), Excluding Exchange Rate Effect </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_B8394E10C06B10DBFE3010990E06CC78" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_B8394E10C06B10DBFE3010990E06CC78" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_B8394E10C06B10DBFE3010990E06CC78" xlink:type="arc"/>

<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_23C80F5B68E62F518BAD10990E0603C7_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_23C80F5B68E62F518BAD10990E0603C7" 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_23C80F5B68E62F518BAD10990E0603C7_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_23C80F5B68E62F518BAD10990E0603C7" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_23C80F5B68E62F518BAD10990E0603C7" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_23C80F5B68E62F518BAD10990E0603C7" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_23C80F5B68E62F518BAD10990E0603C7" xlink:type="arc"/>

<link:label id="lab_us-gaap_RestrictedCash_E423E45C4CB57047EA0510990E06F508_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedCash_E423E45C4CB57047EA0510990E06F508" 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_E423E45C4CB57047EA0510990E06F508_label_en-US" xlink:label="lab_us-gaap_RestrictedCash_E423E45C4CB57047EA0510990E06F508" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedCash" xlink:label="loc_us-gaap_RestrictedCash_E423E45C4CB57047EA0510990E06F508" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedCash_E423E45C4CB57047EA0510990E06F508" xlink:to="lab_us-gaap_RestrictedCash_E423E45C4CB57047EA0510990E06F508" xlink:type="arc"/>

<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_82293EBBF09FDD97554D10990E065AE7_verboseLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_82293EBBF09FDD97554D10990E065AE7" 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 $16, respectively) </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_82293EBBF09FDD97554D10990E065AE7" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_82293EBBF09FDD97554D10990E065AE7" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_82293EBBF09FDD97554D10990E065AE7" xlink:type="arc"/>

<link:label id="lab_msc_Otherassetscurrentunderpreviousaccountingguidance_3EF1B1A3879E6E1C018B10990E0666F9_terseLabel_en-US" xlink:label="lab_msc_Otherassetscurrentunderpreviousaccountingguidance_3EF1B1A3879E6E1C018B10990E0666F9" 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_3EF1B1A3879E6E1C018B10990E0666F9_label_en-US" xlink:label="lab_msc_Otherassetscurrentunderpreviousaccountingguidance_3EF1B1A3879E6E1C018B10990E0666F9" 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_3EF1B1A3879E6E1C018B10990E0666F9_documentation_en-US" xlink:label="lab_msc_Otherassetscurrentunderpreviousaccountingguidance_3EF1B1A3879E6E1C018B10990E0666F9" 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-20180630.xsd#msc_Otherassetscurrentunderpreviousaccountingguidance" xlink:label="loc_msc_Otherassetscurrentunderpreviousaccountingguidance_3EF1B1A3879E6E1C018B10990E0666F9" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Otherassetscurrentunderpreviousaccountingguidance_3EF1B1A3879E6E1C018B10990E0666F9" xlink:to="lab_msc_Otherassetscurrentunderpreviousaccountingguidance_3EF1B1A3879E6E1C018B10990E0666F9" xlink:type="arc"/>

<link:label id="lab_msc_Accumulateddeficitunderpreviousaccountingguidance_0AF74FC6B7F97256628010990E063E01_terseLabel_en-US" xlink:label="lab_msc_Accumulateddeficitunderpreviousaccountingguidance_0AF74FC6B7F97256628010990E063E01" 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_0AF74FC6B7F97256628010990E063E01_label_en-US" xlink:label="lab_msc_Accumulateddeficitunderpreviousaccountingguidance_0AF74FC6B7F97256628010990E063E01" 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_0AF74FC6B7F97256628010990E063E01_documentation_en-US" xlink:label="lab_msc_Accumulateddeficitunderpreviousaccountingguidance_0AF74FC6B7F97256628010990E063E01" 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-20180630.xsd#msc_Accumulateddeficitunderpreviousaccountingguidance" xlink:label="loc_msc_Accumulateddeficitunderpreviousaccountingguidance_0AF74FC6B7F97256628010990E063E01" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Accumulateddeficitunderpreviousaccountingguidance_0AF74FC6B7F97256628010990E063E01" xlink:to="lab_msc_Accumulateddeficitunderpreviousaccountingguidance_0AF74FC6B7F97256628010990E063E01" xlink:type="arc"/>

<link:label id="lab_us-gaap_OperatingIncomeLoss_ACB72DE8831BDB538F3910990E067A1A_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_ACB72DE8831BDB538F3910990E067A1A" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_ACB72DE8831BDB538F3910990E067A1A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingIncomeLoss_ACB72DE8831BDB538F3910990E067A1A" xlink:to="lab_us-gaap_OperatingIncomeLoss_ACB72DE8831BDB538F3910990E067A1A" xlink:type="arc"/>

<link:label id="lab_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults_3799F3EE05FA8450EBA510990E062F2B_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults_3799F3EE05FA8450EBA510990E062F2B" 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_3799F3EE05FA8450EBA510990E062F2B_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults_3799F3EE05FA8450EBA510990E062F2B" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults" xlink:label="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults_3799F3EE05FA8450EBA510990E062F2B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults_3799F3EE05FA8450EBA510990E062F2B" xlink:to="lab_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults_3799F3EE05FA8450EBA510990E062F2B" xlink:type="arc"/>

<link:label id="lab_msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract_70FBA6F31A51E4EDDF90109AA3199EB2_label_en-US" xlink:label="lab_msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract_70FBA6F31A51E4EDDF90109AA3199EB2" 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_70FBA6F31A51E4EDDF90109AA3199EB2_documentation_en-US" xlink:label="lab_msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract_70FBA6F31A51E4EDDF90109AA3199EB2" 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-20180630.xsd#msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract" xlink:label="loc_msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract_70FBA6F31A51E4EDDF90109AA3199EB2" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract_70FBA6F31A51E4EDDF90109AA3199EB2" xlink:to="lab_msc_GuarantorNonGuarantorSubsidiaryFinancialInformationAbstract_70FBA6F31A51E4EDDF90109AA3199EB2" xlink:type="arc"/>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_960BCB893C3B8F759E29109AA32945CA_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_960BCB893C3B8F759E29109AA32945CA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows (used in) provided by operating activities </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_960BCB893C3B8F759E29109AA32945CA" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_960BCB893C3B8F759E29109AA32945CA" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_960BCB893C3B8F759E29109AA32945CA" xlink:type="arc"/>

<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_84CBC71039955C43A7A4109AA32993BC_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_84CBC71039955C43A7A4109AA32993BC" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_84CBC71039955C43A7A4109AA32993BC" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_84CBC71039955C43A7A4109AA32993BC" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_84CBC71039955C43A7A4109AA32993BC" xlink:type="arc"/>

<link:label id="lab_msc_Proceedsfromthedispositionsnet_2540DCC30BED69ABB99F109AA32902FE_terseLabel_en-US" xlink:label="lab_msc_Proceedsfromthedispositionsnet_2540DCC30BED69ABB99F109AA32902FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from disposition, net </link:label>

<link:label id="lab_msc_Proceedsfromthedispositionsnet_2540DCC30BED69ABB99F109AA32902FE_label_en-US" xlink:label="lab_msc_Proceedsfromthedispositionsnet_2540DCC30BED69ABB99F109AA32902FE" 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_2540DCC30BED69ABB99F109AA32902FE_documentation_en-US" xlink:label="lab_msc_Proceedsfromthedispositionsnet_2540DCC30BED69ABB99F109AA32902FE" 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-20180630.xsd#msc_Proceedsfromthedispositionsnet" xlink:label="loc_msc_Proceedsfromthedispositionsnet_2540DCC30BED69ABB99F109AA32902FE" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Proceedsfromthedispositionsnet_2540DCC30BED69ABB99F109AA32902FE" xlink:to="lab_msc_Proceedsfromthedispositionsnet_2540DCC30BED69ABB99F109AA32902FE" xlink:type="arc"/>

<link:label id="lab_msc_Proceedsfromsaleofassets_3EA5BF974867DACBBA4A109AA3293C5B_netLabel_en-US" xlink:label="lab_msc_Proceedsfromsaleofassets_3EA5BF974867DACBBA4A109AA3293C5B" 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_3EA5BF974867DACBBA4A109AA3293C5B_label_en-US" xlink:label="lab_msc_Proceedsfromsaleofassets_3EA5BF974867DACBBA4A109AA3293C5B" 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_3EA5BF974867DACBBA4A109AA3293C5B_documentation_en-US" xlink:label="lab_msc_Proceedsfromsaleofassets_3EA5BF974867DACBBA4A109AA3293C5B" 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-20180630.xsd#msc_Proceedsfromsaleofassets" xlink:label="loc_msc_Proceedsfromsaleofassets_3EA5BF974867DACBBA4A109AA3293C5B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Proceedsfromsaleofassets_3EA5BF974867DACBBA4A109AA3293C5B" xlink:to="lab_msc_Proceedsfromsaleofassets_3EA5BF974867DACBBA4A109AA3293C5B" xlink:type="arc"/>

<link:label id="lab_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_2F6AC3A19E032745E389109AA32982DA_terseLabel_en-US" xlink:label="lab_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_2F6AC3A19E032745E389109AA32982DA" 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_2F6AC3A19E032745E389109AA32982DA_label_en-US" xlink:label="lab_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_2F6AC3A19E032745E389109AA32982DA" 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_2F6AC3A19E032745E389109AA32982DA_documentation_en-US" xlink:label="lab_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_2F6AC3A19E032745E389109AA32982DA" 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-20180630.xsd#msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable" xlink:label="loc_msc_ReturnOfCapitalFromSubsidiaryFromSalesOfAccountsReceivable_2F6AC3A19E032745E389109AA32982DA" xlink:type="locator"/>

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<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A13E5B7505EE082A2F14109AA3299716_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A13E5B7505EE082A2F14109AA3299716" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows provided by (used in) financing activities </link:label>

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<link:label id="lab_msc_NetIntercompanyLoanBorrowingsRepayments_6886A201AF3D250CF761109AA329F44A_terseLabel_en-US" xlink:label="lab_msc_NetIntercompanyLoanBorrowingsRepayments_6886A201AF3D250CF761109AA329F44A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net intercompany loan borrowings (repayments) </link:label>

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<link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_C5CB4BBC0018AF45F28BC89C6A8F76B5_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_C5CB4BBC0018AF45F28BC89C6A8F76B5" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_C5CB4BBC0018AF45F28BC89C6A8F76B5" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IncomeTaxDisclosureAbstract_B2AA508D333FF836B7C523D828707113_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureAbstract_B2AA508D333FF836B7C523D828707113" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax Disclosure [Abstract] </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_B2AA508D333FF836B7C523D828707113" xlink:type="locator"/>

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<link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_A975F2C39888387C871323D82871D4F7_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_A975F2C39888387C871323D82871D4F7" 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_A975F2C39888387C871323D82871D4F7_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_A975F2C39888387C871323D82871D4F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax Disclosure [Text Block] </link:label>

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<link:label id="lab_us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock_02E18503EBD6AEEC1F73CDE7A369C508_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock_02E18503EBD6AEEC1F73CDE7A369C508" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Environmental Loss Contingencies by Site </link:label>

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<link:label id="lab_msc_SegmentInformationAbstract_9FE5E02C3B4BA1B4E558C89C94827FD0_label_en-US" xlink:label="lab_msc_SegmentInformationAbstract_9FE5E02C3B4BA1B4E558C89C94827FD0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment Information [Abstract] </link:label>

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<link:label id="lab_msc_SegmentEbitda_97AEFF261CCA0625970DC89C948230FF_label_en-US" xlink:label="lab_msc_SegmentEbitda_97AEFF261CCA0625970DC89C948230FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment EBITDA </link:label>

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<link:label id="lab_us-gaap_StatementOfStockholdersEquityAbstract_E804BF327E8C253F05D6CD9F9C6C2BE5_label_en-US" xlink:label="lab_us-gaap_StatementOfStockholdersEquityAbstract_E804BF327E8C253F05D6CD9F9C6C2BE5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Stockholders' Equity [Abstract] </link:label>

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<link:label id="lab_us-gaap_EquityComponentDomain_99746DDF13755B8833BFCD9F9C6D3DB9_label_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_99746DDF13755B8833BFCD9F9C6D3DB9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Component [Domain] </link:label>

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<link:label id="lab_us-gaap_CommonStockMember_3C593CB86DAB90E74E09CD9F9C6DDD4F_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockMember_3C593CB86DAB90E74E09CD9F9C6DDD4F" 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_3C593CB86DAB90E74E09CD9F9C6DDD4F_label_en-US" xlink:label="lab_us-gaap_CommonStockMember_3C593CB86DAB90E74E09CD9F9C6DDD4F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock [Member] </link:label>

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<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_2EF7C8793D16F0233CB0CD9F9C6D6E76_verboseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_2EF7C8793D16F0233CB0CD9F9C6D6E76" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Paid-in Capital [Member] </link:label>

<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_2EF7C8793D16F0233CB0CD9F9C6D6E76_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_2EF7C8793D16F0233CB0CD9F9C6D6E76" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Additional Paid-in Capital [Member] </link:label>

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<link:label id="lab_us-gaap_TreasuryStockMember_71E018F6282E7A3C3528CD9F9C6EA9E7_terseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockMember_71E018F6282E7A3C3528CD9F9C6EA9E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Treasury Stock [Member] </link:label>

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<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_C79B84159B17EB3B688ACD9F9C6E0FED_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_C79B84159B17EB3B688ACD9F9C6E0FED" 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_C79B84159B17EB3B688ACD9F9C6E0FED_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_C79B84159B17EB3B688ACD9F9C6E0FED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> AOCI Attributable to Parent [Member] </link:label>

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<link:label id="lab_us-gaap_RetainedEarningsMember_DECEC28C23C5A9621543CD9F9C6EB38C_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember_DECEC28C23C5A9621543CD9F9C6EB38C" 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_DECEC28C23C5A9621543CD9F9C6EB38C_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember_DECEC28C23C5A9621543CD9F9C6EB38C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retained Earnings [Member] </link:label>

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<link:label id="lab_us-gaap_NoncontrollingInterestMember_CF039C36B0E1C4AFCE49CD9F9C6EFC6A_label_en-US" xlink:label="lab_us-gaap_NoncontrollingInterestMember_CF039C36B0E1C4AFCE49CD9F9C6EFC6A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Noncontrolling Interest [Member] </link:label>

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<link:label id="lab_us-gaap_RelatedPartyTransactionDomain_74A71AEAAB14AE7CD4C4109504444CE0_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionDomain_74A71AEAAB14AE7CD4C4109504444CE0" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionDomain" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_74A71AEAAB14AE7CD4C4109504444CE0" xlink:type="locator"/>

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<link:label id="lab_msc_OtherjointventuresunconsolidatedMember_14D6B3466B6094BB171610950444C850_terseLabel_en-US" xlink:label="lab_msc_OtherjointventuresunconsolidatedMember_14D6B3466B6094BB171610950444C850" 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_14D6B3466B6094BB171610950444C850_label_en-US" xlink:label="lab_msc_OtherjointventuresunconsolidatedMember_14D6B3466B6094BB171610950444C850" 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_14D6B3466B6094BB171610950444C850_documentation_en-US" xlink:label="lab_msc_OtherjointventuresunconsolidatedMember_14D6B3466B6094BB171610950444C850" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Other joint ventures unconsolidated [Member] </link:label>

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<link:label id="lab_us-gaap_StatementEquityComponentsAxis_BC566F5589A5824AAB8C10950444CE73_terseLabel_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_BC566F5589A5824AAB8C10950444CE73" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity Components [Axis] </link:label>

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<link:label id="lab_us-gaap_EquityComponentDomain_C81A7009AD7C50FF749610950444A6BA_terseLabel_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_C81A7009AD7C50FF749610950444A6BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity Component [Domain] </link:label>

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<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_D54CAF7C678899DFCBD51095044432AA_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_D54CAF7C678899DFCBD51095044432AA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Additional Paid-in Capital [Member] </link:label>

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<link:label id="lab_us-gaap_DebtInstrumentAxis_BFFFA2409DEA7C1B9066109504441F90_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_BFFFA2409DEA7C1B9066109504441F90" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Axis] </link:label>

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<link:label id="lab_us-gaap_DebtInstrumentNameDomain_1E4D4FF657BF12880EE01095044426A7_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_1E4D4FF657BF12880EE01095044426A7" 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_1E4D4FF657BF12880EE01095044426A7_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_1E4D4FF657BF12880EE01095044426A7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Name [Domain] </link:label>

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<link:label id="lab_srt_RangeMember_9262478F136C9FF12E061095044419AE_label_en-US" xlink:label="lab_srt_RangeMember_9262478F136C9FF12E061095044419AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Range [Domain] </link:label>

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<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_001FE30D3C9CF2579BF4109504446A75" xlink:type="locator"/>

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<link:label id="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_0FFAD8C5DA6B01450D8710950444FE9D_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_0FFAD8C5DA6B01450D8710950444FE9D" 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_0FFAD8C5DA6B01450D8710950444FE9D_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_0FFAD8C5DA6B01450D8710950444FE9D" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_0FFAD8C5DA6B01450D8710950444FE9D" xlink:type="locator"/>

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<link:label id="lab_us-gaap_RelatedPartyDomain_3BBE20F4ECCBF61917F210950444ECC5_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain_3BBE20F4ECCBF61917F210950444ECC5" 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_3BBE20F4ECCBF61917F210950444ECC5_label_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain_3BBE20F4ECCBF61917F210950444ECC5" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_3BBE20F4ECCBF61917F210950444ECC5" xlink:type="locator"/>

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<link:label id="lab_msc_ApolloAffiliatesAndOtherRelatedPartiesMember_624C53AB20029851585510950444967A_terseLabel_en-US" xlink:label="lab_msc_ApolloAffiliatesAndOtherRelatedPartiesMember_624C53AB20029851585510950444967A" 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>

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<link:label id="lab_msc_MomentivePerformanceMaterialsIncMember_131D0DB9E967EAD1FF51109504443F1C_label_en-US" xlink:label="lab_msc_MomentivePerformanceMaterialsIncMember_131D0DB9E967EAD1FF51109504443F1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Momentive Performance Materials Inc. [Member] </link:label>

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<link:loc xlink:href="msc-20180630.xsd#msc_MomentivePerformanceMaterialsIncMember" xlink:label="loc_msc_MomentivePerformanceMaterialsIncMember_131D0DB9E967EAD1FF51109504443F1C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_MomentivePerformanceMaterialsIncMember_131D0DB9E967EAD1FF51109504443F1C" xlink:to="lab_msc_MomentivePerformanceMaterialsIncMember_131D0DB9E967EAD1FF51109504443F1C" xlink:type="arc"/>

<link:label id="lab_us-gaap_CoVenturerMember_A5487FC000766C7D96B51095044425F6_terseLabel_en-US" xlink:label="lab_us-gaap_CoVenturerMember_A5487FC000766C7D96B51095044425F6" 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_A5487FC000766C7D96B51095044425F6_label_en-US" xlink:label="lab_us-gaap_CoVenturerMember_A5487FC000766C7D96B51095044425F6" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CoVenturerMember" xlink:label="loc_us-gaap_CoVenturerMember_A5487FC000766C7D96B51095044425F6" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CoVenturerMember_A5487FC000766C7D96B51095044425F6" xlink:to="lab_us-gaap_CoVenturerMember_A5487FC000766C7D96B51095044425F6" xlink:type="arc"/>

<link:label id="lab_us-gaap_RelatedPartyTransactionLineItems_F486C0816A4C857C760C109504447268_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionLineItems_F486C0816A4C857C760C109504447268" 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_F486C0816A4C857C760C109504447268_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionLineItems_F486C0816A4C857C760C109504447268" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_F486C0816A4C857C760C109504447268" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_F486C0816A4C857C760C109504447268" xlink:to="lab_us-gaap_RelatedPartyTransactionLineItems_F486C0816A4C857C760C109504447268" xlink:type="arc"/>

<link:label id="lab_msc_AnnualManagementConsultingFee_6E165346488F84594ADD1095044434CE_terseLabel_en-US" xlink:label="lab_msc_AnnualManagementConsultingFee_6E165346488F84594ADD1095044434CE" 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_6E165346488F84594ADD1095044434CE_label_en-US" xlink:label="lab_msc_AnnualManagementConsultingFee_6E165346488F84594ADD1095044434CE" 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_6E165346488F84594ADD1095044434CE_documentation_en-US" xlink:label="lab_msc_AnnualManagementConsultingFee_6E165346488F84594ADD1095044434CE" 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-20180630.xsd#msc_AnnualManagementConsultingFee" xlink:label="loc_msc_AnnualManagementConsultingFee_6E165346488F84594ADD1095044434CE" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AnnualManagementConsultingFee_6E165346488F84594ADD1095044434CE" xlink:to="lab_msc_AnnualManagementConsultingFee_6E165346488F84594ADD1095044434CE" xlink:type="arc"/>

<link:label id="lab_msc_AnnualManagementConsultingFeePercentage_66EACE7BA1CE3949C49C10950444EEF4_terseLabel_en-US" xlink:label="lab_msc_AnnualManagementConsultingFeePercentage_66EACE7BA1CE3949C49C10950444EEF4" 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_66EACE7BA1CE3949C49C10950444EEF4_label_en-US" xlink:label="lab_msc_AnnualManagementConsultingFeePercentage_66EACE7BA1CE3949C49C10950444EEF4" 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_66EACE7BA1CE3949C49C10950444EEF4_documentation_en-US" xlink:label="lab_msc_AnnualManagementConsultingFeePercentage_66EACE7BA1CE3949C49C10950444EEF4" 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-20180630.xsd#msc_AnnualManagementConsultingFeePercentage" xlink:label="loc_msc_AnnualManagementConsultingFeePercentage_66EACE7BA1CE3949C49C10950444EEF4" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AnnualManagementConsultingFeePercentage_66EACE7BA1CE3949C49C10950444EEF4" xlink:to="lab_msc_AnnualManagementConsultingFeePercentage_66EACE7BA1CE3949C49C10950444EEF4" xlink:type="arc"/>

<link:label id="lab_us-gaap_RelatedPartyCosts_908745789FF8946E130E10950444D960_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyCosts_908745789FF8946E130E10950444D960" 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_908745789FF8946E130E10950444D960_label_en-US" xlink:label="lab_us-gaap_RelatedPartyCosts_908745789FF8946E130E10950444D960" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyCosts" xlink:label="loc_us-gaap_RelatedPartyCosts_908745789FF8946E130E10950444D960" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyCosts_908745789FF8946E130E10950444D960" xlink:to="lab_us-gaap_RelatedPartyCosts_908745789FF8946E130E10950444D960" xlink:type="arc"/>

<link:label id="lab_msc_SharedServicesCostsIncurredbyHexion_921F4E77EDBD94403A7B109504445BD4_terseLabel_en-US" xlink:label="lab_msc_SharedServicesCostsIncurredbyHexion_921F4E77EDBD94403A7B109504445BD4" 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_921F4E77EDBD94403A7B109504445BD4_label_en-US" xlink:label="lab_msc_SharedServicesCostsIncurredbyHexion_921F4E77EDBD94403A7B109504445BD4" 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_921F4E77EDBD94403A7B109504445BD4_documentation_en-US" xlink:label="lab_msc_SharedServicesCostsIncurredbyHexion_921F4E77EDBD94403A7B109504445BD4" 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-20180630.xsd#msc_SharedServicesCostsIncurredbyHexion" xlink:label="loc_msc_SharedServicesCostsIncurredbyHexion_921F4E77EDBD94403A7B109504445BD4" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SharedServicesCostsIncurredbyHexion_921F4E77EDBD94403A7B109504445BD4" xlink:to="lab_msc_SharedServicesCostsIncurredbyHexion_921F4E77EDBD94403A7B109504445BD4" xlink:type="arc"/>

<link:label id="lab_msc_SharedServicesCostsIncurredByMpm_D542E0DA2F6998E9F665109504441542_terseLabel_en-US" xlink:label="lab_msc_SharedServicesCostsIncurredByMpm_D542E0DA2F6998E9F665109504441542" 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_D542E0DA2F6998E9F665109504441542_label_en-US" xlink:label="lab_msc_SharedServicesCostsIncurredByMpm_D542E0DA2F6998E9F665109504441542" 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_D542E0DA2F6998E9F665109504441542_documentation_en-US" xlink:label="lab_msc_SharedServicesCostsIncurredByMpm_D542E0DA2F6998E9F665109504441542" 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-20180630.xsd#msc_SharedServicesCostsIncurredByMpm" xlink:label="loc_msc_SharedServicesCostsIncurredByMpm_D542E0DA2F6998E9F665109504441542" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SharedServicesCostsIncurredByMpm_D542E0DA2F6998E9F665109504441542" xlink:to="lab_msc_SharedServicesCostsIncurredByMpm_D542E0DA2F6998E9F665109504441542" xlink:type="arc"/>

<link:label id="lab_msc_SharedServicesNetBillingsHexiontoMPM_B51CE21BB6568A6B8712109504448245_terseLabel_en-US" xlink:label="lab_msc_SharedServicesNetBillingsHexiontoMPM_B51CE21BB6568A6B8712109504448245" 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_B51CE21BB6568A6B8712109504448245_label_en-US" xlink:label="lab_msc_SharedServicesNetBillingsHexiontoMPM_B51CE21BB6568A6B8712109504448245" 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_B51CE21BB6568A6B8712109504448245_documentation_en-US" xlink:label="lab_msc_SharedServicesNetBillingsHexiontoMPM_B51CE21BB6568A6B8712109504448245" 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-20180630.xsd#msc_SharedServicesNetBillingsHexiontoMPM" xlink:label="loc_msc_SharedServicesNetBillingsHexiontoMPM_B51CE21BB6568A6B8712109504448245" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_SharedServicesNetBillingsHexiontoMPM_B51CE21BB6568A6B8712109504448245" xlink:to="lab_msc_SharedServicesNetBillingsHexiontoMPM_B51CE21BB6568A6B8712109504448245" xlink:type="arc"/>

<link:label id="lab_msc_AccountsReceivablesharedservicescosts_C7543DEB68CFCCEE9AC610950444F15E_terseLabel_en-US" xlink:label="lab_msc_AccountsReceivablesharedservicescosts_C7543DEB68CFCCEE9AC610950444F15E" 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_C7543DEB68CFCCEE9AC610950444F15E_label_en-US" xlink:label="lab_msc_AccountsReceivablesharedservicescosts_C7543DEB68CFCCEE9AC610950444F15E" 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_C7543DEB68CFCCEE9AC610950444F15E_documentation_en-US" xlink:label="lab_msc_AccountsReceivablesharedservicescosts_C7543DEB68CFCCEE9AC610950444F15E" 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-20180630.xsd#msc_AccountsReceivablesharedservicescosts" xlink:label="loc_msc_AccountsReceivablesharedservicescosts_C7543DEB68CFCCEE9AC610950444F15E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AccountsReceivablesharedservicescosts_C7543DEB68CFCCEE9AC610950444F15E" xlink:to="lab_msc_AccountsReceivablesharedservicescosts_C7543DEB68CFCCEE9AC610950444F15E" xlink:type="arc"/>

<link:label id="lab_us-gaap_RevenueFromRelatedParties_BF19030F9AB8151C0A2E10950444064B_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromRelatedParties_BF19030F9AB8151C0A2E10950444064B" 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_BF19030F9AB8151C0A2E10950444064B_label_en-US" xlink:label="lab_us-gaap_RevenueFromRelatedParties_BF19030F9AB8151C0A2E10950444064B" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromRelatedParties" xlink:label="loc_us-gaap_RevenueFromRelatedParties_BF19030F9AB8151C0A2E10950444064B" xlink:type="locator"/>

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<link:label id="lab_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_77B6CB6FB89B7CF41E5110950444BA28_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_77B6CB6FB89B7CF41E5110950444BA28" 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_77B6CB6FB89B7CF41E5110950444BA28_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_77B6CB6FB89B7CF41E5110950444BA28" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty" xlink:label="loc_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_77B6CB6FB89B7CF41E5110950444BA28" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_77B6CB6FB89B7CF41E5110950444BA28" xlink:to="lab_us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty_77B6CB6FB89B7CF41E5110950444BA28" xlink:type="arc"/>

<link:label id="lab_msc_Revenuesfromdistributionagreement_B1F35139BF6D04C4675210950444F136_terseLabel_en-US" xlink:label="lab_msc_Revenuesfromdistributionagreement_B1F35139BF6D04C4675210950444F136" 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_B1F35139BF6D04C4675210950444F136_label_en-US" xlink:label="lab_msc_Revenuesfromdistributionagreement_B1F35139BF6D04C4675210950444F136" 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_B1F35139BF6D04C4675210950444F136_documentation_en-US" xlink:label="lab_msc_Revenuesfromdistributionagreement_B1F35139BF6D04C4675210950444F136" 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-20180630.xsd#msc_Revenuesfromdistributionagreement" xlink:label="loc_msc_Revenuesfromdistributionagreement_B1F35139BF6D04C4675210950444F136" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_Revenuesfromdistributionagreement_B1F35139BF6D04C4675210950444F136" xlink:to="lab_msc_Revenuesfromdistributionagreement_B1F35139BF6D04C4675210950444F136" xlink:type="arc"/>

<link:label id="lab_us-gaap_AccountsReceivableRelatedParties_D1AD017378020F885FA810950444273A_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableRelatedParties_D1AD017378020F885FA810950444273A" 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_D1AD017378020F885FA810950444273A_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableRelatedParties_D1AD017378020F885FA810950444273A" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableRelatedParties" xlink:label="loc_us-gaap_AccountsReceivableRelatedParties_D1AD017378020F885FA810950444273A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableRelatedParties_D1AD017378020F885FA810950444273A" xlink:to="lab_us-gaap_AccountsReceivableRelatedParties_D1AD017378020F885FA810950444273A" xlink:type="arc"/>

<link:label id="lab_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_7336CB4CE2B0DF259A3D109504440373_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_7336CB4CE2B0DF259A3D109504440373" 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_7336CB4CE2B0DF259A3D109504440373_label_en-US" xlink:label="lab_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_7336CB4CE2B0DF259A3D109504440373" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent" xlink:label="loc_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_7336CB4CE2B0DF259A3D109504440373" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_7336CB4CE2B0DF259A3D109504440373" xlink:to="lab_us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent_7336CB4CE2B0DF259A3D109504440373" xlink:type="arc"/>

<link:label id="lab_msc_PurchasesfromJV_EB14B42FD75EC089C53310950453828E_terseLabel_en-US" xlink:label="lab_msc_PurchasesfromJV_EB14B42FD75EC089C53310950453828E" 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_EB14B42FD75EC089C53310950453828E_label_en-US" xlink:label="lab_msc_PurchasesfromJV_EB14B42FD75EC089C53310950453828E" 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_EB14B42FD75EC089C53310950453828E_documentation_en-US" xlink:label="lab_msc_PurchasesfromJV_EB14B42FD75EC089C53310950453828E" 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-20180630.xsd#msc_PurchasesfromJV" xlink:label="loc_msc_PurchasesfromJV_EB14B42FD75EC089C53310950453828E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_PurchasesfromJV_EB14B42FD75EC089C53310950453828E" xlink:to="lab_msc_PurchasesfromJV_EB14B42FD75EC089C53310950453828E" xlink:type="arc"/>

<link:label id="lab_us-gaap_AccountsReceivableRelatedPartiesCurrent_00D5BBA449A74C781C8B10950453FB7F_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableRelatedPartiesCurrent_00D5BBA449A74C781C8B10950453FB7F" 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_00D5BBA449A74C781C8B10950453FB7F_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableRelatedPartiesCurrent_00D5BBA449A74C781C8B10950453FB7F" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableRelatedPartiesCurrent" xlink:label="loc_us-gaap_AccountsReceivableRelatedPartiesCurrent_00D5BBA449A74C781C8B10950453FB7F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableRelatedPartiesCurrent_00D5BBA449A74C781C8B10950453FB7F" xlink:to="lab_us-gaap_AccountsReceivableRelatedPartiesCurrent_00D5BBA449A74C781C8B10950453FB7F" xlink:type="arc"/>

<link:label id="lab_us-gaap_LoansAndLeasesReceivableRelatedParties_DC2B63444AABA70CDEA11095045304FB_terseLabel_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableRelatedParties_DC2B63444AABA70CDEA11095045304FB" 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_DC2B63444AABA70CDEA11095045304FB_label_en-US" xlink:label="lab_us-gaap_LoansAndLeasesReceivableRelatedParties_DC2B63444AABA70CDEA11095045304FB" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LoansAndLeasesReceivableRelatedParties" xlink:label="loc_us-gaap_LoansAndLeasesReceivableRelatedParties_DC2B63444AABA70CDEA11095045304FB" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LoansAndLeasesReceivableRelatedParties_DC2B63444AABA70CDEA11095045304FB" xlink:to="lab_us-gaap_LoansAndLeasesReceivableRelatedParties_DC2B63444AABA70CDEA11095045304FB" xlink:type="arc"/>

<link:label id="lab_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_D8FF81062EEEE37917B8CD039EBA3AFC_label_en-US" xlink:label="lab_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_D8FF81062EEEE37917B8CD039EBA3AFC" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_D8FF81062EEEE37917B8CD039EBA3AFC" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_D8FF81062EEEE37917B8CD039EBA3AFC" xlink:to="lab_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_D8FF81062EEEE37917B8CD039EBA3AFC" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtDisclosureAbstract_CEC08350353D310802CDC89B5C1FE162_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureAbstract_CEC08350353D310802CDC89B5C1FE162" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="loc_us-gaap_DebtDisclosureAbstract_CEC08350353D310802CDC89B5C1FE162" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureAbstract_CEC08350353D310802CDC89B5C1FE162" xlink:to="lab_us-gaap_DebtDisclosureAbstract_CEC08350353D310802CDC89B5C1FE162" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtInstrumentTable_ADF9656E76D5EB324ED7C89B5C2F8B67_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_ADF9656E76D5EB324ED7C89B5C2F8B67" 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_ADF9656E76D5EB324ED7C89B5C2F8B67_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_ADF9656E76D5EB324ED7C89B5C2F8B67" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_ADF9656E76D5EB324ED7C89B5C2F8B67" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTable_ADF9656E76D5EB324ED7C89B5C2F8B67" xlink:to="lab_us-gaap_DebtInstrumentTable_ADF9656E76D5EB324ED7C89B5C2F8B67" xlink:type="arc"/>

<link:label id="lab_msc_ABLFacilityDomain_8EB19A82233D35246994C89B5C2FA311_terseLabel_en-US" xlink:label="lab_msc_ABLFacilityDomain_8EB19A82233D35246994C89B5C2FA311" 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_8EB19A82233D35246994C89B5C2FA311_label_en-US" xlink:label="lab_msc_ABLFacilityDomain_8EB19A82233D35246994C89B5C2FA311" 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_8EB19A82233D35246994C89B5C2FA311_documentation_en-US" xlink:label="lab_msc_ABLFacilityDomain_8EB19A82233D35246994C89B5C2FA311" 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-20180630.xsd#msc_ABLFacilityDomain" xlink:label="loc_msc_ABLFacilityDomain_8EB19A82233D35246994C89B5C2FA311" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_ABLFacilityDomain_8EB19A82233D35246994C89B5C2FA311" xlink:to="lab_msc_ABLFacilityDomain_8EB19A82233D35246994C89B5C2FA311" xlink:type="arc"/>

<link:label id="lab_msc_A10.00FirstPrioritySeniorNotesDue2020Member_837817A662459FFA693AC89B5C2F1011_terseLabel_en-US" xlink:label="lab_msc_A10.00FirstPrioritySeniorNotesDue2020Member_837817A662459FFA693AC89B5C2F1011" 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_837817A662459FFA693AC89B5C2F1011_label_en-US" xlink:label="lab_msc_A10.00FirstPrioritySeniorNotesDue2020Member_837817A662459FFA693AC89B5C2F1011" 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_837817A662459FFA693AC89B5C2F1011_documentation_en-US" xlink:label="lab_msc_A10.00FirstPrioritySeniorNotesDue2020Member_837817A662459FFA693AC89B5C2F1011" 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-20180630.xsd#msc_A10.00FirstPrioritySeniorNotesDue2020Member" xlink:label="loc_msc_A10.00FirstPrioritySeniorNotesDue2020Member_837817A662459FFA693AC89B5C2F1011" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_A10.00FirstPrioritySeniorNotesDue2020Member_837817A662459FFA693AC89B5C2F1011" xlink:to="lab_msc_A10.00FirstPrioritySeniorNotesDue2020Member_837817A662459FFA693AC89B5C2F1011" xlink:type="arc"/>

<link:label id="lab_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_38EE4D786C93DAB2FB29C89B5C2FE26E_terseLabel_en-US" xlink:label="lab_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_38EE4D786C93DAB2FB29C89B5C2FE26E" 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_38EE4D786C93DAB2FB29C89B5C2FE26E_label_en-US" xlink:label="lab_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_38EE4D786C93DAB2FB29C89B5C2FE26E" 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_38EE4D786C93DAB2FB29C89B5C2FE26E_documentation_en-US" xlink:label="lab_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_38EE4D786C93DAB2FB29C89B5C2FE26E" 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-20180630.xsd#msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member" xlink:label="loc_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_38EE4D786C93DAB2FB29C89B5C2FE26E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_38EE4D786C93DAB2FB29C89B5C2FE26E" xlink:to="lab_msc_A10.375FirstPrioritySenionSecuredNotesdue2022Member_38EE4D786C93DAB2FB29C89B5C2FE26E" xlink:type="arc"/>

<link:label id="lab_msc_A13.75SeniorSecuredNotesdue2022Member_D504773F29F3D9559457C89B5C3E07EB_terseLabel_en-US" xlink:label="lab_msc_A13.75SeniorSecuredNotesdue2022Member_D504773F29F3D9559457C89B5C3E07EB" 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_D504773F29F3D9559457C89B5C3E07EB_label_en-US" xlink:label="lab_msc_A13.75SeniorSecuredNotesdue2022Member_D504773F29F3D9559457C89B5C3E07EB" 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_D504773F29F3D9559457C89B5C3E07EB_documentation_en-US" xlink:label="lab_msc_A13.75SeniorSecuredNotesdue2022Member_D504773F29F3D9559457C89B5C3E07EB" 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-20180630.xsd#msc_A13.75SeniorSecuredNotesdue2022Member" xlink:label="loc_msc_A13.75SeniorSecuredNotesdue2022Member_D504773F29F3D9559457C89B5C3E07EB" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_A13.75SeniorSecuredNotesdue2022Member_D504773F29F3D9559457C89B5C3E07EB" xlink:to="lab_msc_A13.75SeniorSecuredNotesdue2022Member_D504773F29F3D9559457C89B5C3E07EB" xlink:type="arc"/>

<link:label id="lab_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_5947BEBB063E8D668796C89B5C3EEEE6_terseLabel_en-US" xlink:label="lab_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_5947BEBB063E8D668796C89B5C3EEEE6" 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_5947BEBB063E8D668796C89B5C3EEEE6_label_en-US" xlink:label="lab_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_5947BEBB063E8D668796C89B5C3EEEE6" 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_5947BEBB063E8D668796C89B5C3EEEE6_documentation_en-US" xlink:label="lab_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_5947BEBB063E8D668796C89B5C3EEEE6" 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-20180630.xsd#msc_A900SecondPrioritySeniorSecuredNotesDue2020Member" xlink:label="loc_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_5947BEBB063E8D668796C89B5C3EEEE6" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_5947BEBB063E8D668796C89B5C3EEEE6" xlink:to="lab_msc_A900SecondPrioritySeniorSecuredNotesDue2020Member_5947BEBB063E8D668796C89B5C3EEEE6" xlink:type="arc"/>

<link:label id="lab_msc_A92DebenturesDue2021Member_B4016A4D7192C98889DFC89B5C3EC862_terseLabel_en-US" xlink:label="lab_msc_A92DebenturesDue2021Member_B4016A4D7192C98889DFC89B5C3EC862" 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_B4016A4D7192C98889DFC89B5C3EC862_label_en-US" xlink:label="lab_msc_A92DebenturesDue2021Member_B4016A4D7192C98889DFC89B5C3EC862" 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_B4016A4D7192C98889DFC89B5C3EC862_documentation_en-US" xlink:label="lab_msc_A92DebenturesDue2021Member_B4016A4D7192C98889DFC89B5C3EC862" 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-20180630.xsd#msc_A92DebenturesDue2021Member" xlink:label="loc_msc_A92DebenturesDue2021Member_B4016A4D7192C98889DFC89B5C3EC862" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_A92DebenturesDue2021Member_B4016A4D7192C98889DFC89B5C3EC862" xlink:to="lab_msc_A92DebenturesDue2021Member_B4016A4D7192C98889DFC89B5C3EC862" xlink:type="arc"/>

<link:label id="lab_msc_A7875DebenturesDue2023Member_2E6D46826FAEC1BE4D90C89B5C3EC82D_terseLabel_en-US" xlink:label="lab_msc_A7875DebenturesDue2023Member_2E6D46826FAEC1BE4D90C89B5C3EC82D" 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_2E6D46826FAEC1BE4D90C89B5C3EC82D_label_en-US" xlink:label="lab_msc_A7875DebenturesDue2023Member_2E6D46826FAEC1BE4D90C89B5C3EC82D" 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_2E6D46826FAEC1BE4D90C89B5C3EC82D_documentation_en-US" xlink:label="lab_msc_A7875DebenturesDue2023Member_2E6D46826FAEC1BE4D90C89B5C3EC82D" 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-20180630.xsd#msc_A7875DebenturesDue2023Member" xlink:label="loc_msc_A7875DebenturesDue2023Member_2E6D46826FAEC1BE4D90C89B5C3EC82D" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_A7875DebenturesDue2023Member_2E6D46826FAEC1BE4D90C89B5C3EC82D" xlink:to="lab_msc_A7875DebenturesDue2023Member_2E6D46826FAEC1BE4D90C89B5C3EC82D" xlink:type="arc"/>

<link:label id="lab_msc_AustraliaFacilityDue2021Member_3F0A7C38D41D448789E2C89B5C3E0CA1_terseLabel_en-US" xlink:label="lab_msc_AustraliaFacilityDue2021Member_3F0A7C38D41D448789E2C89B5C3E0CA1" 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_3F0A7C38D41D448789E2C89B5C3E0CA1_label_en-US" xlink:label="lab_msc_AustraliaFacilityDue2021Member_3F0A7C38D41D448789E2C89B5C3E0CA1" 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_3F0A7C38D41D448789E2C89B5C3E0CA1_documentation_en-US" xlink:label="lab_msc_AustraliaFacilityDue2021Member_3F0A7C38D41D448789E2C89B5C3E0CA1" 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-20180630.xsd#msc_AustraliaFacilityDue2021Member" xlink:label="loc_msc_AustraliaFacilityDue2021Member_3F0A7C38D41D448789E2C89B5C3E0CA1" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AustraliaFacilityDue2021Member_3F0A7C38D41D448789E2C89B5C3E0CA1" xlink:to="lab_msc_AustraliaFacilityDue2021Member_3F0A7C38D41D448789E2C89B5C3E0CA1" xlink:type="arc"/>

<link:label id="lab_msc_BrazilianBankLoansMember_951B177CC409AB00B3D9C89B5C3E51BE_terseLabel_en-US" xlink:label="lab_msc_BrazilianBankLoansMember_951B177CC409AB00B3D9C89B5C3E51BE" 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_951B177CC409AB00B3D9C89B5C3E51BE_label_en-US" xlink:label="lab_msc_BrazilianBankLoansMember_951B177CC409AB00B3D9C89B5C3E51BE" 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_951B177CC409AB00B3D9C89B5C3E51BE_documentation_en-US" xlink:label="lab_msc_BrazilianBankLoansMember_951B177CC409AB00B3D9C89B5C3E51BE" 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-20180630.xsd#msc_BrazilianBankLoansMember" xlink:label="loc_msc_BrazilianBankLoansMember_951B177CC409AB00B3D9C89B5C3E51BE" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_BrazilianBankLoansMember_951B177CC409AB00B3D9C89B5C3E51BE" xlink:to="lab_msc_BrazilianBankLoansMember_951B177CC409AB00B3D9C89B5C3E51BE" xlink:type="arc"/>

<link:label id="lab_us-gaap_CapitalLeaseObligationsMember_4923CA8D7E274B23EC63C89B5C3EE886_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligationsMember_4923CA8D7E274B23EC63C89B5C3EE886" 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_4923CA8D7E274B23EC63C89B5C3EE886_label_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligationsMember_4923CA8D7E274B23EC63C89B5C3EE886" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeaseObligationsMember" xlink:label="loc_us-gaap_CapitalLeaseObligationsMember_4923CA8D7E274B23EC63C89B5C3EE886" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeaseObligationsMember_4923CA8D7E274B23EC63C89B5C3EE886" xlink:to="lab_us-gaap_CapitalLeaseObligationsMember_4923CA8D7E274B23EC63C89B5C3EE886" xlink:type="arc"/>

<link:label id="lab_us-gaap_UnsecuredDebtMember_C879FCE6EFDC21AA1B2DC89B5C3ED1BC_terseLabel_en-US" xlink:label="lab_us-gaap_UnsecuredDebtMember_C879FCE6EFDC21AA1B2DC89B5C3ED1BC" 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_C879FCE6EFDC21AA1B2DC89B5C3ED1BC_label_en-US" xlink:label="lab_us-gaap_UnsecuredDebtMember_C879FCE6EFDC21AA1B2DC89B5C3ED1BC" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnsecuredDebtMember" xlink:label="loc_us-gaap_UnsecuredDebtMember_C879FCE6EFDC21AA1B2DC89B5C3ED1BC" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnsecuredDebtMember_C879FCE6EFDC21AA1B2DC89B5C3ED1BC" xlink:to="lab_us-gaap_UnsecuredDebtMember_C879FCE6EFDC21AA1B2DC89B5C3ED1BC" xlink:type="arc"/>

<link:label id="lab_msc_UnamortizeddebtissuancecostsMember_586890FE2A63E7469ED0C89B5C3E758B_terseLabel_en-US" xlink:label="lab_msc_UnamortizeddebtissuancecostsMember_586890FE2A63E7469ED0C89B5C3E758B" 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_586890FE2A63E7469ED0C89B5C3E758B_label_en-US" xlink:label="lab_msc_UnamortizeddebtissuancecostsMember_586890FE2A63E7469ED0C89B5C3E758B" 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_586890FE2A63E7469ED0C89B5C3E758B_documentation_en-US" xlink:label="lab_msc_UnamortizeddebtissuancecostsMember_586890FE2A63E7469ED0C89B5C3E758B" 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-20180630.xsd#msc_UnamortizeddebtissuancecostsMember" xlink:label="loc_msc_UnamortizeddebtissuancecostsMember_586890FE2A63E7469ED0C89B5C3E758B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_UnamortizeddebtissuancecostsMember_586890FE2A63E7469ED0C89B5C3E758B" xlink:to="lab_msc_UnamortizeddebtissuancecostsMember_586890FE2A63E7469ED0C89B5C3E758B" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtInstrumentLineItems_8B56629042947BF71BAFC89B5C3E60AB_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_8B56629042947BF71BAFC89B5C3E60AB" 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_8B56629042947BF71BAFC89B5C3E60AB_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_8B56629042947BF71BAFC89B5C3E60AB" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_8B56629042947BF71BAFC89B5C3E60AB" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8B56629042947BF71BAFC89B5C3E60AB" xlink:to="lab_us-gaap_DebtInstrumentLineItems_8B56629042947BF71BAFC89B5C3E60AB" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtInstrumentUnamortizedPremium_55F6AD560B093B1D3D55C89B5C3E101A_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedPremium_55F6AD560B093B1D3D55C89B5C3E101A" 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_55F6AD560B093B1D3D55C89B5C3E101A_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedPremium_55F6AD560B093B1D3D55C89B5C3E101A" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentUnamortizedPremium" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedPremium_55F6AD560B093B1D3D55C89B5C3E101A" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedPremium_55F6AD560B093B1D3D55C89B5C3E101A" xlink:to="lab_us-gaap_DebtInstrumentUnamortizedPremium_55F6AD560B093B1D3D55C89B5C3E101A" xlink:type="arc"/>

<link:label id="lab_us-gaap_LongTermDebtCurrent_D2DC8A7CA2CA4581C91DC89B5C3EDD7E_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_D2DC8A7CA2CA4581C91DC89B5C3EDD7E" 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_D2DC8A7CA2CA4581C91DC89B5C3EDD7E_label_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_D2DC8A7CA2CA4581C91DC89B5C3EDD7E" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_D2DC8A7CA2CA4581C91DC89B5C3EDD7E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtCurrent_D2DC8A7CA2CA4581C91DC89B5C3EDD7E" xlink:to="lab_us-gaap_LongTermDebtCurrent_D2DC8A7CA2CA4581C91DC89B5C3EDD7E" xlink:type="arc"/>

<link:label id="lab_us-gaap_DeferredFinanceCostsGross_EB57C316EA0BEC087E97C89B5C3E94BD_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsGross_EB57C316EA0BEC087E97C89B5C3E94BD" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredFinanceCostsGross" xlink:label="loc_us-gaap_DeferredFinanceCostsGross_EB57C316EA0BEC087E97C89B5C3E94BD" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredFinanceCostsGross_EB57C316EA0BEC087E97C89B5C3E94BD" xlink:to="lab_us-gaap_DeferredFinanceCostsGross_EB57C316EA0BEC087E97C89B5C3E94BD" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_73C047A3CEAAE8DCB2A7C89B5C3EFBCA_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_73C047A3CEAAE8DCB2A7C89B5C3EFBCA" 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_73C047A3CEAAE8DCB2A7C89B5C3EFBCA_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_73C047A3CEAAE8DCB2A7C89B5C3EFBCA" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_73C047A3CEAAE8DCB2A7C89B5C3EFBCA" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_73C047A3CEAAE8DCB2A7C89B5C3EFBCA" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_73C047A3CEAAE8DCB2A7C89B5C3EFBCA" xlink:type="arc"/>

<link:label id="lab_us-gaap_DebtInstrumentMaturityDate_9446F90596F14E173BDAC89B5C3E9239_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentMaturityDate_9446F90596F14E173BDAC89B5C3E9239" 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_9446F90596F14E173BDAC89B5C3E9239_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentMaturityDate_9446F90596F14E173BDAC89B5C3E9239" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="loc_us-gaap_DebtInstrumentMaturityDate_9446F90596F14E173BDAC89B5C3E9239" xlink:type="locator"/>

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<link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_09A435E5532F45E880CCC881E2366694_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_09A435E5532F45E880CCC881E2366694" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-derivative Financial Instruments Fair Value </link:label>

<link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_09A435E5532F45E880CCC881E2366694_label_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_09A435E5532F45E880CCC881E2366694" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTextBlock" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTextBlock_09A435E5532F45E880CCC881E2366694" xlink:type="locator"/>

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<link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_D75186FE6F41D125ABDAF0F11D4D4992_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_D75186FE6F41D125ABDAF0F11D4D4992" 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_D75186FE6F41D125ABDAF0F11D4D4992_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_D75186FE6F41D125ABDAF0F11D4D4992" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_D75186FE6F41D125ABDAF0F11D4D4992" xlink:type="locator"/>

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<link:label id="lab_us-gaap_RestructuringAndRelatedActivitiesAbstract_C60237782455A703476CC80CC34FA715_label_en-US" xlink:label="lab_us-gaap_RestructuringAndRelatedActivitiesAbstract_C60237782455A703476CC80CC34FA715" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restructuring and Related Activities [Abstract] </link:label>

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<link:label id="lab_us-gaap_EnvironmentalRemediationObligationsAbstract_73CBE27ECF8EBC06DF950F99F0C5FD18_label_en-US" xlink:label="lab_us-gaap_EnvironmentalRemediationObligationsAbstract_73CBE27ECF8EBC06DF950F99F0C5FD18" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Environmental Remediation Obligations [Abstract] </link:label>

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<link:label id="lab_us-gaap_SiteContingencyTable_A851DD3535000A6BDD600F99F0C6FE18_terseLabel_en-US" xlink:label="lab_us-gaap_SiteContingencyTable_A851DD3535000A6BDD600F99F0C6FE18" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Site Contingency [Table] </link:label>

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<link:label id="lab_srt_MinimumMember_5249E4BB3FEEFF7419330F99F0C7CED8_terseLabel_en-US" xlink:label="lab_srt_MinimumMember_5249E4BB3FEEFF7419330F99F0C7CED8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Minimum [Member] </link:label>

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<link:label id="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteAxis_CB52C8CF62EB418EF52F0F99F0C713D4_terseLabel_en-US" xlink:label="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteAxis_CB52C8CF62EB418EF52F0F99F0C713D4" 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>

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<link:label id="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain_BFA5DB7B0025E278C7220F99F0C767B6_terseLabel_en-US" xlink:label="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain_BFA5DB7B0025E278C7220F99F0C767B6" 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>

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<link:label id="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain_BFA5DB7B0025E278C7220F99F0C767B6_documentation_en-US" xlink:label="lab_msc_EnvironmentalRemediationAndRestorationLiabilitiesBySiteDomain_BFA5DB7B0025E278C7220F99F0C767B6" 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>

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<link:label id="lab_us-gaap_EnvironmentalRemediationSiteAxis_3B4F4D209BA308E33D390F99F0C81B1B_terseLabel_en-US" xlink:label="lab_us-gaap_EnvironmentalRemediationSiteAxis_3B4F4D209BA308E33D390F99F0C81B1B" 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_3B4F4D209BA308E33D390F99F0C81B1B_label_en-US" xlink:label="lab_us-gaap_EnvironmentalRemediationSiteAxis_3B4F4D209BA308E33D390F99F0C81B1B" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EnvironmentalRemediationSiteAxis" xlink:label="loc_us-gaap_EnvironmentalRemediationSiteAxis_3B4F4D209BA308E33D390F99F0C81B1B" xlink:type="locator"/>

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<link:label id="lab_us-gaap_EnvironmentalRemediationSiteDomain_F627559411282375F3910F99F0C8315E_terseLabel_en-US" xlink:label="lab_us-gaap_EnvironmentalRemediationSiteDomain_F627559411282375F3910F99F0C8315E" 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_F627559411282375F3910F99F0C8315E_label_en-US" xlink:label="lab_us-gaap_EnvironmentalRemediationSiteDomain_F627559411282375F3910F99F0C8315E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Environmental Remediation Site [Domain] </link:label>

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<link:label id="lab_msc_GeismarLaMember_5639A55B934D1E46EFAA0F99F0C8D835_terseLabel_en-US" xlink:label="lab_msc_GeismarLaMember_5639A55B934D1E46EFAA0F99F0C8D835" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Geismar, LA </link:label>

<link:label id="lab_msc_GeismarLaMember_5639A55B934D1E46EFAA0F99F0C8D835_label_en-US" xlink:label="lab_msc_GeismarLaMember_5639A55B934D1E46EFAA0F99F0C8D835" 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_5639A55B934D1E46EFAA0F99F0C8D835_documentation_en-US" xlink:label="lab_msc_GeismarLaMember_5639A55B934D1E46EFAA0F99F0C8D835" 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-20180630.xsd#msc_GeismarLaMember" xlink:label="loc_msc_GeismarLaMember_5639A55B934D1E46EFAA0F99F0C8D835" xlink:type="locator"/>

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<link:label id="lab_msc_SuperfundAndOffsiteLandfillsLessThan1Member_6CA05E41EF0C8FAB88E10F99F0CB744C_terseLabel_en-US" xlink:label="lab_msc_SuperfundAndOffsiteLandfillsLessThan1Member_6CA05E41EF0C8FAB88E10F99F0CB744C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Less than 1% </link:label>

<link:label id="lab_msc_SuperfundAndOffsiteLandfillsLessThan1Member_6CA05E41EF0C8FAB88E10F99F0CB744C_label_en-US" xlink:label="lab_msc_SuperfundAndOffsiteLandfillsLessThan1Member_6CA05E41EF0C8FAB88E10F99F0CB744C" 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_6CA05E41EF0C8FAB88E10F99F0CB744C_documentation_en-US" xlink:label="lab_msc_SuperfundAndOffsiteLandfillsLessThan1Member_6CA05E41EF0C8FAB88E10F99F0CB744C" 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>

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<link:label id="lab_msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member_D843D5BA47E96BAEC4D90F99F0CB540E_terseLabel_en-US" xlink:label="lab_msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member_D843D5BA47E96BAEC4D90F99F0CB540E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equal to or greater than 1% </link:label>

<link:label id="lab_msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member_D843D5BA47E96BAEC4D90F99F0CB540E_label_en-US" xlink:label="lab_msc_SuperfundAndOffsiteLandfillsEqualToOrGreaterThan1Member_D843D5BA47E96BAEC4D90F99F0CB540E" 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>

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<link:label id="lab_msc_CurrentlyOwnedMember_C4A18C36DC67EDDD4F6C0F99F0CB4102_terseLabel_en-US" xlink:label="lab_msc_CurrentlyOwnedMember_C4A18C36DC67EDDD4F6C0F99F0CB4102" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Currently-owned </link:label>

<link:label id="lab_msc_CurrentlyOwnedMember_C4A18C36DC67EDDD4F6C0F99F0CB4102_label_en-US" xlink:label="lab_msc_CurrentlyOwnedMember_C4A18C36DC67EDDD4F6C0F99F0CB4102" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Currently-Owned [Member] </link:label>

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<link:label id="lab_msc_FormerlyOwnedRemediationMember_3A7A3B49E930C734D47B0F99F0CCA142_terseLabel_en-US" xlink:label="lab_msc_FormerlyOwnedRemediationMember_3A7A3B49E930C734D47B0F99F0CCA142" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Remediation </link:label>

<link:label id="lab_msc_FormerlyOwnedRemediationMember_3A7A3B49E930C734D47B0F99F0CCA142_label_en-US" xlink:label="lab_msc_FormerlyOwnedRemediationMember_3A7A3B49E930C734D47B0F99F0CCA142" 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_3A7A3B49E930C734D47B0F99F0CCA142_documentation_en-US" xlink:label="lab_msc_FormerlyOwnedRemediationMember_3A7A3B49E930C734D47B0F99F0CCA142" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Formerly-Owned - Remediation [Member] </link:label>

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<link:label id="lab_msc_FormerlyOwnedMonitoringOnlyMember_DD1D13799B292241F3BB0F99F0CCDCB7_terseLabel_en-US" xlink:label="lab_msc_FormerlyOwnedMonitoringOnlyMember_DD1D13799B292241F3BB0F99F0CCDCB7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Monitoring only </link:label>

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<link:label id="lab_us-gaap_AccrualForEnvironmentalLossContingencies_51D0BBEDE3CF942E2A840F99F0CCEC27_terseLabel_en-US" xlink:label="lab_us-gaap_AccrualForEnvironmentalLossContingencies_51D0BBEDE3CF942E2A840F99F0CCEC27" 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_51D0BBEDE3CF942E2A840F99F0CCEC27_label_en-US" xlink:label="lab_us-gaap_AccrualForEnvironmentalLossContingencies_51D0BBEDE3CF942E2A840F99F0CCEC27" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingencies" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingencies_51D0BBEDE3CF942E2A840F99F0CCEC27" xlink:type="locator"/>

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<link:label id="lab_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_A6A10779F8D794F4A3F50F99F0CC2C60_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_A6A10779F8D794F4A3F50F99F0CC2C60" 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_A6A10779F8D794F4A3F50F99F0CC2C60_label_en-US" xlink:label="lab_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_A6A10779F8D794F4A3F50F99F0CC2C60" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccruedEnvironmentalLossContingenciesCurrent" xlink:label="loc_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_A6A10779F8D794F4A3F50F99F0CC2C60" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_A6A10779F8D794F4A3F50F99F0CC2C60" xlink:to="lab_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_A6A10779F8D794F4A3F50F99F0CC2C60" xlink:type="arc"/>

<link:label id="lab_msc_DiscountRateAssumedToRecordAtPresentValue_AA9419A9F9D8DD422E0D0F99F0CDC27E_terseLabel_en-US" xlink:label="lab_msc_DiscountRateAssumedToRecordAtPresentValue_AA9419A9F9D8DD422E0D0F99F0CDC27E" 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_AA9419A9F9D8DD422E0D0F99F0CDC27E_label_en-US" xlink:label="lab_msc_DiscountRateAssumedToRecordAtPresentValue_AA9419A9F9D8DD422E0D0F99F0CDC27E" 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_AA9419A9F9D8DD422E0D0F99F0CDC27E_documentation_en-US" xlink:label="lab_msc_DiscountRateAssumedToRecordAtPresentValue_AA9419A9F9D8DD422E0D0F99F0CDC27E" 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-20180630.xsd#msc_DiscountRateAssumedToRecordAtPresentValue" xlink:label="loc_msc_DiscountRateAssumedToRecordAtPresentValue_AA9419A9F9D8DD422E0D0F99F0CDC27E" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_DiscountRateAssumedToRecordAtPresentValue_AA9419A9F9D8DD422E0D0F99F0CDC27E" xlink:to="lab_msc_DiscountRateAssumedToRecordAtPresentValue_AA9419A9F9D8DD422E0D0F99F0CDC27E" xlink:type="arc"/>

<link:label id="lab_msc_UndiscountedLiabilityExpectedToBePaid_EC0FEE4F53C3E43AA5020F99F0CD25DC_terseLabel_en-US" xlink:label="lab_msc_UndiscountedLiabilityExpectedToBePaid_EC0FEE4F53C3E43AA5020F99F0CD25DC" 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_EC0FEE4F53C3E43AA5020F99F0CD25DC_label_en-US" xlink:label="lab_msc_UndiscountedLiabilityExpectedToBePaid_EC0FEE4F53C3E43AA5020F99F0CD25DC" 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_EC0FEE4F53C3E43AA5020F99F0CD25DC_documentation_en-US" xlink:label="lab_msc_UndiscountedLiabilityExpectedToBePaid_EC0FEE4F53C3E43AA5020F99F0CD25DC" 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-20180630.xsd#msc_UndiscountedLiabilityExpectedToBePaid" xlink:label="loc_msc_UndiscountedLiabilityExpectedToBePaid_EC0FEE4F53C3E43AA5020F99F0CD25DC" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_UndiscountedLiabilityExpectedToBePaid_EC0FEE4F53C3E43AA5020F99F0CD25DC" xlink:to="lab_msc_UndiscountedLiabilityExpectedToBePaid_EC0FEE4F53C3E43AA5020F99F0CD25DC" xlink:type="arc"/>

<link:label id="lab_us-gaap_AccrualForEnvironmentalLossContingenciesGross_DF9B3B2CEBF42B4030000F99F0CD5BCC_terseLabel_en-US" xlink:label="lab_us-gaap_AccrualForEnvironmentalLossContingenciesGross_DF9B3B2CEBF42B4030000F99F0CD5BCC" 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_DF9B3B2CEBF42B4030000F99F0CD5BCC_label_en-US" xlink:label="lab_us-gaap_AccrualForEnvironmentalLossContingenciesGross_DF9B3B2CEBF42B4030000F99F0CD5BCC" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesGross" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingenciesGross_DF9B3B2CEBF42B4030000F99F0CD5BCC" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccrualForEnvironmentalLossContingenciesGross_DF9B3B2CEBF42B4030000F99F0CD5BCC" xlink:to="lab_us-gaap_AccrualForEnvironmentalLossContingenciesGross_DF9B3B2CEBF42B4030000F99F0CD5BCC" xlink:type="arc"/>

<link:label id="lab_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C0907FC482014813BBF80F99F0CD04AF_terseLabel_en-US" xlink:label="lab_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C0907FC482014813BBF80F99F0CD04AF" 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_C0907FC482014813BBF80F99F0CD04AF_label_en-US" xlink:label="lab_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C0907FC482014813BBF80F99F0CD04AF" 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_C0907FC482014813BBF80F99F0CD04AF_documentation_en-US" xlink:label="lab_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C0907FC482014813BBF80F99F0CD04AF" 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-20180630.xsd#msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears" xlink:label="loc_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C0907FC482014813BBF80F99F0CD04AF" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C0907FC482014813BBF80F99F0CD04AF" xlink:to="lab_msc_AccrualForEnvironmentalLossContingenciesUndiscountedDueWithinOneToFiveYears_C0907FC482014813BBF80F99F0CD04AF" xlink:type="arc"/>

<link:label id="lab_us-gaap_LossContingencyEstimateOfPossibleLoss_EED5E54758AA354840BA0F99F0CD281B_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyEstimateOfPossibleLoss_EED5E54758AA354840BA0F99F0CD281B" 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_EED5E54758AA354840BA0F99F0CD281B_label_en-US" xlink:label="lab_us-gaap_LossContingencyEstimateOfPossibleLoss_EED5E54758AA354840BA0F99F0CD281B" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyEstimateOfPossibleLoss" xlink:label="loc_us-gaap_LossContingencyEstimateOfPossibleLoss_EED5E54758AA354840BA0F99F0CD281B" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyEstimateOfPossibleLoss_EED5E54758AA354840BA0F99F0CD281B" xlink:to="lab_us-gaap_LossContingencyEstimateOfPossibleLoss_EED5E54758AA354840BA0F99F0CD281B" xlink:type="arc"/>

<link:label id="lab_us-gaap_LitigationReserveCurrent_8E17DB13BEC093A3C36A0F99F0CDA446_terseLabel_en-US" xlink:label="lab_us-gaap_LitigationReserveCurrent_8E17DB13BEC093A3C36A0F99F0CDA446" 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_8E17DB13BEC093A3C36A0F99F0CDA446_label_en-US" xlink:label="lab_us-gaap_LitigationReserveCurrent_8E17DB13BEC093A3C36A0F99F0CDA446" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationReserveCurrent" xlink:label="loc_us-gaap_LitigationReserveCurrent_8E17DB13BEC093A3C36A0F99F0CDA446" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LitigationReserveCurrent_8E17DB13BEC093A3C36A0F99F0CDA446" xlink:to="lab_us-gaap_LitigationReserveCurrent_8E17DB13BEC093A3C36A0F99F0CDA446" xlink:type="arc"/>

<link:label id="lab_us-gaap_LitigationReserveNoncurrent_6771F916D57089FE4BA80F99F0CE5934_terseLabel_en-US" xlink:label="lab_us-gaap_LitigationReserveNoncurrent_6771F916D57089FE4BA80F99F0CE5934" 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_6771F916D57089FE4BA80F99F0CE5934_label_en-US" xlink:label="lab_us-gaap_LitigationReserveNoncurrent_6771F916D57089FE4BA80F99F0CE5934" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationReserveNoncurrent" xlink:label="loc_us-gaap_LitigationReserveNoncurrent_6771F916D57089FE4BA80F99F0CE5934" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LitigationReserveNoncurrent_6771F916D57089FE4BA80F99F0CE5934" xlink:to="lab_us-gaap_LitigationReserveNoncurrent_6771F916D57089FE4BA80F99F0CE5934" xlink:type="arc"/>

<link:label id="lab_us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_A6746F5266824A0D4DB50F99F0CEAC8D_terseLabel_en-US" xlink:label="lab_us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_A6746F5266824A0D4DB50F99F0CEAC8D" 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_A6746F5266824A0D4DB50F99F0CEAC8D_label_en-US" xlink:label="lab_us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_A6746F5266824A0D4DB50F99F0CEAC8D" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate" xlink:label="loc_us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_A6746F5266824A0D4DB50F99F0CEAC8D" xlink:type="locator"/>

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<link:label id="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_03F1955E156FB421558923D8286E6C79_label_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_03F1955E156FB421558923D8286E6C79" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_03F1955E156FB421558923D8286E6C79" xlink:type="locator"/>

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<link:label id="lab_msc_Transitiontaxexpense_CCF28D94AB8B18D3DD8123D8286EE337_terseLabel_en-US" xlink:label="lab_msc_Transitiontaxexpense_CCF28D94AB8B18D3DD8123D8286EE337" 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_CCF28D94AB8B18D3DD8123D8286EE337_label_en-US" xlink:label="lab_msc_Transitiontaxexpense_CCF28D94AB8B18D3DD8123D8286EE337" 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_CCF28D94AB8B18D3DD8123D8286EE337_documentation_en-US" xlink:label="lab_msc_Transitiontaxexpense_CCF28D94AB8B18D3DD8123D8286EE337" 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-20180630.xsd#msc_Transitiontaxexpense" xlink:label="loc_msc_Transitiontaxexpense_CCF28D94AB8B18D3DD8123D8286EE337" xlink:type="locator"/>

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<link:label id="lab_msc_Netoperatinglosscarryforwardreduction_94C9497AB956FA059C7023D8286E4292_terseLabel_en-US" xlink:label="lab_msc_Netoperatinglosscarryforwardreduction_94C9497AB956FA059C7023D8286E4292" 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_94C9497AB956FA059C7023D8286E4292_label_en-US" xlink:label="lab_msc_Netoperatinglosscarryforwardreduction_94C9497AB956FA059C7023D8286E4292" 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_94C9497AB956FA059C7023D8286E4292_documentation_en-US" xlink:label="lab_msc_Netoperatinglosscarryforwardreduction_94C9497AB956FA059C7023D8286E4292" 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-20180630.xsd#msc_Netoperatinglosscarryforwardreduction" xlink:label="loc_msc_Netoperatinglosscarryforwardreduction_94C9497AB956FA059C7023D8286E4292" xlink:type="locator"/>

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<link:label id="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_F805BB25E9BF2E0B1C7923D8286E6058_terseLabel_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_F805BB25E9BF2E0B1C7923D8286E6058" 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_F805BB25E9BF2E0B1C7923D8286E6058_label_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_F805BB25E9BF2E0B1C7923D8286E6058" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_F805BB25E9BF2E0B1C7923D8286E6058" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_F805BB25E9BF2E0B1C7923D8286E6058" xlink:to="lab_us-gaap_EffectiveIncomeTaxRateContinuingOperations_F805BB25E9BF2E0B1C7923D8286E6058" xlink:type="arc"/>

<link:label id="lab_us-gaap_AccountsReceivableNet_A4A6E8400F99D23FB4B1C89C9443F6C8_verboseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNet_A4A6E8400F99D23FB4B1C89C9443F6C8" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNet" xlink:label="loc_us-gaap_AccountsReceivableNet_A4A6E8400F99D23FB4B1C89C9443F6C8" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNet_A4A6E8400F99D23FB4B1C89C9443F6C8" xlink:to="lab_us-gaap_AccountsReceivableNet_A4A6E8400F99D23FB4B1C89C9443F6C8" xlink:type="arc"/>

<link:label id="lab_msc_IntercompanyAccountsReceivable_0C45F581F4C1DDC10CF8C89C9443167C_terseLabel_en-US" xlink:label="lab_msc_IntercompanyAccountsReceivable_0C45F581F4C1DDC10CF8C89C9443167C" 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_0C45F581F4C1DDC10CF8C89C9443167C_label_en-US" xlink:label="lab_msc_IntercompanyAccountsReceivable_0C45F581F4C1DDC10CF8C89C9443167C" 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_0C45F581F4C1DDC10CF8C89C9443167C_documentation_en-US" xlink:label="lab_msc_IntercompanyAccountsReceivable_0C45F581F4C1DDC10CF8C89C9443167C" 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-20180630.xsd#msc_IntercompanyAccountsReceivable" xlink:label="loc_msc_IntercompanyAccountsReceivable_0C45F581F4C1DDC10CF8C89C9443167C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyAccountsReceivable_0C45F581F4C1DDC10CF8C89C9443167C" xlink:to="lab_msc_IntercompanyAccountsReceivable_0C45F581F4C1DDC10CF8C89C9443167C" xlink:type="arc"/>

<link:label id="lab_msc_IntercompanyLoansReceivableCurrentPortion_3D002C041D5E9DAC1992C89C9443FF24_terseLabel_en-US" xlink:label="lab_msc_IntercompanyLoansReceivableCurrentPortion_3D002C041D5E9DAC1992C89C9443FF24" 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_3D002C041D5E9DAC1992C89C9443FF24_label_en-US" xlink:label="lab_msc_IntercompanyLoansReceivableCurrentPortion_3D002C041D5E9DAC1992C89C9443FF24" 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_3D002C041D5E9DAC1992C89C9443FF24_documentation_en-US" xlink:label="lab_msc_IntercompanyLoansReceivableCurrentPortion_3D002C041D5E9DAC1992C89C9443FF24" 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-20180630.xsd#msc_IntercompanyLoansReceivableCurrentPortion" xlink:label="loc_msc_IntercompanyLoansReceivableCurrentPortion_3D002C041D5E9DAC1992C89C9443FF24" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyLoansReceivableCurrentPortion_3D002C041D5E9DAC1992C89C9443FF24" xlink:to="lab_msc_IntercompanyLoansReceivableCurrentPortion_3D002C041D5E9DAC1992C89C9443FF24" xlink:type="arc"/>

<link:label id="lab_us-gaap_AssetsCurrent_DB6845EC4C74999DE6D2C89C9443558C_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_DB6845EC4C74999DE6D2C89C9443558C" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_DB6845EC4C74999DE6D2C89C9443558C" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrent_DB6845EC4C74999DE6D2C89C9443558C" xlink:to="lab_us-gaap_AssetsCurrent_DB6845EC4C74999DE6D2C89C9443558C" xlink:type="arc"/>

<link:label id="lab_msc_IntercompanyLoansReceivable_A3BC686EB90B858F9B8EC89C9443E358_terseLabel_en-US" xlink:label="lab_msc_IntercompanyLoansReceivable_A3BC686EB90B858F9B8EC89C9443E358" 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_A3BC686EB90B858F9B8EC89C9443E358_label_en-US" xlink:label="lab_msc_IntercompanyLoansReceivable_A3BC686EB90B858F9B8EC89C9443E358" 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_A3BC686EB90B858F9B8EC89C9443E358_documentation_en-US" xlink:label="lab_msc_IntercompanyLoansReceivable_A3BC686EB90B858F9B8EC89C9443E358" 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-20180630.xsd#msc_IntercompanyLoansReceivable" xlink:label="loc_msc_IntercompanyLoansReceivable_A3BC686EB90B858F9B8EC89C9443E358" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyLoansReceivable_A3BC686EB90B858F9B8EC89C9443E358" xlink:to="lab_msc_IntercompanyLoansReceivable_A3BC686EB90B858F9B8EC89C9443E358" xlink:type="arc"/>

<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_96A3411FBF8BB0105AFBC89C944383CF_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_96A3411FBF8BB0105AFBC89C944383CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property and equipment, net </link:label>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_96A3411FBF8BB0105AFBC89C944383CF" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_96A3411FBF8BB0105AFBC89C944383CF" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_96A3411FBF8BB0105AFBC89C944383CF" xlink:type="arc"/>

<link:label id="lab_us-gaap_Assets_53BA71ED22B858CDE897C89C94432208_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_53BA71ED22B858CDE897C89C94432208" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_53BA71ED22B858CDE897C89C94432208" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_53BA71ED22B858CDE897C89C94432208" xlink:to="lab_us-gaap_Assets_53BA71ED22B858CDE897C89C94432208" xlink:type="arc"/>

<link:label id="lab_msc_IntercompanyAccountsPayable_7AAE3CC3444155957CEDC89C9443DFEA_terseLabel_en-US" xlink:label="lab_msc_IntercompanyAccountsPayable_7AAE3CC3444155957CEDC89C9443DFEA" 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_7AAE3CC3444155957CEDC89C9443DFEA_label_en-US" xlink:label="lab_msc_IntercompanyAccountsPayable_7AAE3CC3444155957CEDC89C9443DFEA" 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_7AAE3CC3444155957CEDC89C9443DFEA_documentation_en-US" xlink:label="lab_msc_IntercompanyAccountsPayable_7AAE3CC3444155957CEDC89C9443DFEA" 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-20180630.xsd#msc_IntercompanyAccountsPayable" xlink:label="loc_msc_IntercompanyAccountsPayable_7AAE3CC3444155957CEDC89C9443DFEA" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyAccountsPayable_7AAE3CC3444155957CEDC89C9443DFEA" xlink:to="lab_msc_IntercompanyAccountsPayable_7AAE3CC3444155957CEDC89C9443DFEA" xlink:type="arc"/>

<link:label id="lab_msc_IntercompanyLoansPayableWithinOneYear_0DBB61AB6231C04751B1C89C94536B9F_terseLabel_en-US" xlink:label="lab_msc_IntercompanyLoansPayableWithinOneYear_0DBB61AB6231C04751B1C89C94536B9F" 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_0DBB61AB6231C04751B1C89C94536B9F_label_en-US" xlink:label="lab_msc_IntercompanyLoansPayableWithinOneYear_0DBB61AB6231C04751B1C89C94536B9F" 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_0DBB61AB6231C04751B1C89C94536B9F_documentation_en-US" xlink:label="lab_msc_IntercompanyLoansPayableWithinOneYear_0DBB61AB6231C04751B1C89C94536B9F" 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-20180630.xsd#msc_IntercompanyLoansPayableWithinOneYear" xlink:label="loc_msc_IntercompanyLoansPayableWithinOneYear_0DBB61AB6231C04751B1C89C94536B9F" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyLoansPayableWithinOneYear_0DBB61AB6231C04751B1C89C94536B9F" xlink:to="lab_msc_IntercompanyLoansPayableWithinOneYear_0DBB61AB6231C04751B1C89C94536B9F" xlink:type="arc"/>

<link:label id="lab_us-gaap_LiabilitiesCurrent_3FDD15EC8E80BA7D02B5C89C94531E55_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_3FDD15EC8E80BA7D02B5C89C94531E55" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_3FDD15EC8E80BA7D02B5C89C94531E55" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_3FDD15EC8E80BA7D02B5C89C94531E55" xlink:to="lab_us-gaap_LiabilitiesCurrent_3FDD15EC8E80BA7D02B5C89C94531E55" xlink:type="arc"/>

<link:label id="lab_msc_IntercompanyLoansPayable_98C40EE00BF07315731BC89C9453A9A8_terseLabel_en-US" xlink:label="lab_msc_IntercompanyLoansPayable_98C40EE00BF07315731BC89C9453A9A8" 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_98C40EE00BF07315731BC89C9453A9A8_label_en-US" xlink:label="lab_msc_IntercompanyLoansPayable_98C40EE00BF07315731BC89C9453A9A8" 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_98C40EE00BF07315731BC89C9453A9A8_documentation_en-US" xlink:label="lab_msc_IntercompanyLoansPayable_98C40EE00BF07315731BC89C9453A9A8" 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-20180630.xsd#msc_IntercompanyLoansPayable" xlink:label="loc_msc_IntercompanyLoansPayable_98C40EE00BF07315731BC89C9453A9A8" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_IntercompanyLoansPayable_98C40EE00BF07315731BC89C9453A9A8" xlink:to="lab_msc_IntercompanyLoansPayable_98C40EE00BF07315731BC89C9453A9A8" xlink:type="arc"/>

<link:label id="lab_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_DBCDBC9388F47BD04FA3C89C94538F13_terseLabel_en-US" xlink:label="lab_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_DBCDBC9388F47BD04FA3C89C94538F13" 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_DBCDBC9388F47BD04FA3C89C94538F13_label_en-US" xlink:label="lab_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_DBCDBC9388F47BD04FA3C89C94538F13" 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_DBCDBC9388F47BD04FA3C89C94538F13_documentation_en-US" xlink:label="lab_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_DBCDBC9388F47BD04FA3C89C94538F13" 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-20180630.xsd#msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment" xlink:label="loc_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_DBCDBC9388F47BD04FA3C89C94538F13" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_DBCDBC9388F47BD04FA3C89C94538F13" xlink:to="lab_msc_AccumulatedLossesOfUnconsolidatedSubsidiariesInExcessOfInvestment_DBCDBC9388F47BD04FA3C89C94538F13" xlink:type="arc"/>

<link:label id="lab_us-gaap_Liabilities_68EEBC6D2DD442C3C5E3C89C9453C501_totalLabel_en-US" xlink:label="lab_us-gaap_Liabilities_68EEBC6D2DD442C3C5E3C89C9453C501" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_68EEBC6D2DD442C3C5E3C89C9453C501" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_68EEBC6D2DD442C3C5E3C89C9453C501" xlink:to="lab_us-gaap_Liabilities_68EEBC6D2DD442C3C5E3C89C9453C501" xlink:type="arc"/>

<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D615A90834998B7433B4C89C94534C55_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D615A90834998B7433B4C89C94534C55" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D615A90834998B7433B4C89C94534C55" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D615A90834998B7433B4C89C94534C55" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D615A90834998B7433B4C89C94534C55" xlink:type="arc"/>

<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_C2C5B5B41899C6F51ED6C89C94531EC9_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_C2C5B5B41899C6F51ED6C89C94531EC9" 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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_C2C5B5B41899C6F51ED6C89C94531EC9" xlink:type="locator"/>

<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_C2C5B5B41899C6F51ED6C89C94531EC9" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquity_C2C5B5B41899C6F51ED6C89C94531EC9" xlink:type="arc"/>

<link:label id="lab_msc_BackgroundAndBasisOfPresentationAbstract_5F7B9C28B5C062B93928CD039EC95A89_label_en-US" xlink:label="lab_msc_BackgroundAndBasisOfPresentationAbstract_5F7B9C28B5C062B93928CD039EC95A89" 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_5F7B9C28B5C062B93928CD039EC95A89_documentation_en-US" xlink:label="lab_msc_BackgroundAndBasisOfPresentationAbstract_5F7B9C28B5C062B93928CD039EC95A89" 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-20180630.xsd#msc_BackgroundAndBasisOfPresentationAbstract" xlink:label="loc_msc_BackgroundAndBasisOfPresentationAbstract_5F7B9C28B5C062B93928CD039EC95A89" xlink:type="locator"/>

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<link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_9090338D9A1C58D51A67CD039EC972F7_terseLabel_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_9090338D9A1C58D51A67CD039EC972F7" 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>

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<link:label id="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_FE6F08A51C9F86D7E4E7C89C94EFC200_terseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_FE6F08A51C9F86D7E4E7C89C94EFC200" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Pension and Other Postretirement Benefit Plans </link:label>

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<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_59EA86E17F80A508B189F0DCDE5DDCEC_totalLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_59EA86E17F80A508B189F0DCDE5DDCEC" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Comprehensive loss </link:label>

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Filing Submission 0000013239-18-000019 – Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Hexion Inc. – ‘10-Q’ for 6/30/18 – ‘EX-101.LAB’

On: Tuesday, 8/7/18, at 4:35pm ET · For: 6/30/18 · Accession #: 13239-18-19 · File #: 1-00071

Previous ‘10-Q’: ‘10-Q’ on 5/14/18 for 3/31/18 · Next: ‘10-Q’ on 11/13/18 for 9/30/18 · Latest: ‘10-Q’ on 11/12/21 for 9/30/21

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

‘EX-101.LAB’ — XBRL Labels — msc-20180630_lab

This Exhibit is an XBRL XML File.

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