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  <xs:element id="ce_ChinaEuropeJapanAndSingaporeFactoringAgreementsMember" abstract="true" name="ChinaEuropeJapanAndSingaporeFactoringAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_MasterDiscountingAgreementMember" abstract="true" name="MasterDiscountingAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_TransferOfFinancialAssetsTreatedAsSalesNonRecourseOrLimitedRecourseBasisAccountsReceivablePercentage" abstract="false" name="TransferOfFinancialAssetsTreatedAsSalesNonRecourseOrLimitedRecourseBasisAccountsReceivablePercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_DefinedBenefitPlanBenefitObligationPercentage" abstract="false" name="DefinedBenefitPlanBenefitObligationPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_DefinedBenefitPlanAssetsPercentage" abstract="false" name="DefinedBenefitPlanAssetsPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_DefinedBenefitPlanAssumptionsUsedinCalculatingNetPeriodicBenefitCostDiscountRateforServiceCost" abstract="false" name="DefinedBenefitPlanAssumptionsUsedinCalculatingNetPeriodicBenefitCostDiscountRateforServiceCost" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_DefinedBenefitPlanAssumptionsUsedinCalculatingNetPeriodicBenefitCostDiscountRateforInterestCost" abstract="false" name="DefinedBenefitPlanAssumptionsUsedinCalculatingNetPeriodicBenefitCostDiscountRateforInterestCost" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_ScheduleofHealthCareCostTrendTable" abstract="true" name="ScheduleofHealthCareCostTrendTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ce_ScheduleofHealthCareCostTrendLineItems" abstract="true" name="ScheduleofHealthCareCostTrendLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ce_DefinedBenefitPlanActualReturnOnPlanAssetsPercent" abstract="false" name="DefinedBenefitPlanActualReturnOnPlanAssetsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_EquitySecuritiesInternationalToPlansMember" abstract="true" name="EquitySecuritiesInternationalToPlansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_OtherSecuritiesMember" abstract="true" name="OtherSecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_TotalPlanAssetsMember" abstract="true" name="TotalPlanAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_InsuranceContractsInvestmentsMember" abstract="true" name="InsuranceContractsInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_DefinedBenefitPlanByPlanLiabilityCategoriesAxis" abstract="true" name="DefinedBenefitPlanByPlanLiabilityCategoriesAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="ce_PlanLiabilityCategoriesDomain" abstract="true" name="PlanLiabilityCategoriesDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_TotalPlanLiabilitiesMember" abstract="true" name="TotalPlanLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_DefinedBenefitPlanFairValueOfPlanAssetsNetOfNonFinancialPlanReceivablesAndPayables" abstract="false" name="DefinedBenefitPlanFairValueOfPlanAssetsNetOfNonFinancialPlanReceivablesAndPayables" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_PensionPlanAssetsFairValueNonFinancialReceivables" abstract="false" name="PensionPlanAssetsFairValueNonFinancialReceivables" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_PensionPlanAssetsFairValueNonFinancialPayables" abstract="false" name="PensionPlanAssetsFairValueNonFinancialPayables" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_BenefitObligationsAbstract" abstract="true" name="BenefitObligationsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ce_DemergerObligations" abstract="false" name="DemergerObligations" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_DivestitureObligations" abstract="false" name="DivestitureObligations" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_ActiveSites" abstract="false" name="ActiveSites" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_UsSuperfundSites" abstract="false" name="UsSuperfundSites" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_OtherEnvironmentalRemediationReserves" abstract="false" name="OtherEnvironmentalRemediationReserves" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_ScheduleOfEnvironmentalDisclosureTable" abstract="true" name="ScheduleOfEnvironmentalDisclosureTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ce_InfraservGmbhCoGendorfKgMember" abstract="true" name="InfraservGmbhCoGendorfKgMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_InfraservGmbhCoHoechstKgMember" abstract="true" name="InfraservGmbhCoHoechstKgMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_YNCORISGmbHCo.KGMember" abstract="true" name="YNCORISGmbHCo.KGMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_EnvironmentalDisclosureLineItems" abstract="true" name="EnvironmentalDisclosureLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ce_EnvironmentalLiabilityPercentage" abstract="false" name="EnvironmentalLiabilityPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_PassaicRiverNewJerseyMember" abstract="true" name="PassaicRiverNewJerseyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_NumberOfPartiesIncludedInUsepaOrder" abstract="false" name="NumberOfPartiesIncludedInUsepaOrder" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ce_Environmental" abstract="false" name="Environmental" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_CommonStockDividendsDecreasePercentage" abstract="false" name="CommonStockDividendsDecreasePercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_ComprehensiveIncomeLossTable" abstract="true" name="ComprehensiveIncomeLossTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ce_ComprehensiveIncomeLossLineItems" abstract="true" name="ComprehensiveIncomeLossLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ce_ScheduleOfIncomeTaxesTable" abstract="true" name="ScheduleOfIncomeTaxesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ce_ScheduleOfIncomeTaxesLineItems" abstract="true" name="ScheduleOfIncomeTaxesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ce_IncomeTaxReconciliationEquityIncomeAndDividends" abstract="false" name="IncomeTaxReconciliationEquityIncomeAndDividends" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_IncomeExpenseNotResultingInTaxImpact" abstract="false" name="IncomeExpenseNotResultingInTaxImpact" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_EffectiveIncomeTaxRateReconciliationSubpartFAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationSubpartFAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_EffectiveIncomeTaxRateReconciliationAssetTransfersBetweenWhollyOwnedForeignAffiliatesAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationAssetTransfersBetweenWhollyOwnedForeignAffiliatesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_EffectiveIncomeTaxRateReconciliationTradeTaxesAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationTradeTaxesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_EffectiveIncomeTaxRateReconciliationAssetAndInvestmentImpairmentAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationAssetAndInvestmentImpairmentAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_EffectiveIncomeTaxRateReconciliationCantonalTaxRateAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationCantonalTaxRateAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_EffectiveIncomeTaxRateReconciliationSubpartFPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationSubpartFPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_EffectiveIncomeTaxRateReconciliationAssetTransfersBetweenWhollyOwnedForeignAffiliatesPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationAssetTransfersBetweenWhollyOwnedForeignAffiliatesPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_EffectiveIncomeTaxRateReconciliationTradeTaxesPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationTradeTaxesPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_EffectiveIncomeTaxRateReconciliationAssetAndInvestmentImpairmentPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationAssetAndInvestmentImpairmentPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_EffectiveIncomeTaxRateReconciliationCantonalTaxRatePercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationCantonalTaxRatePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_MobilityMaterialsMember" abstract="true" name="MobilityMaterialsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_EffectiveIncomeTaxRateReconciliationU.S.BenefitsOfForeignDerivedIntangibleIncomeAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationU.S.BenefitsOfForeignDerivedIntangibleIncomeAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_UnrecognizedTaxBenefitDecreaseResultingFromChangesInUncertainTaxPositionAndImpactsOfAmendedTaxReturnFilings" abstract="false" name="UnrecognizedTaxBenefitDecreaseResultingFromChangesInUncertainTaxPositionAndImpactsOfAmendedTaxReturnFilings" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_CapitalLossCarryforwards" abstract="false" name="CapitalLossCarryforwards" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_AlternativeMinimumTaxCreditCarryforwardsBeforeTax" abstract="false" name="AlternativeMinimumTaxCreditCarryforwardsBeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionAndPostretirementObligations" abstract="false" name="DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionAndPostretirementObligations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_LeaseRightofUseAsset" abstract="false" name="LeaseRightofUseAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_LeaseLiability" abstract="false" name="LeaseLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_ForeignCurrencyDenominatedDebtMember" abstract="true" name="ForeignCurrencyDenominatedDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_EuroDenominatedBorrowingDue2030Member" abstract="true" name="EuroDenominatedBorrowingDue2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_JapaneseYenDenominatedBorrowingMember" abstract="true" name="JapaneseYenDenominatedBorrowingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_JPYDenominatedBorrowingsMember" abstract="true" name="JPYDenominatedBorrowingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_EuroDenominatedBorrowingDue2028Member" abstract="true" name="EuroDenominatedBorrowingDue2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_GainLossOnNonDerivativeUsedInNetInvestmentHedge" abstract="false" name="GainLossOnNonDerivativeUsedInNetInvestmentHedge" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_GainLossOnNonDerivativesandDerivativesUsedInNetInvestmentHedge" abstract="false" name="GainLossOnNonDerivativesandDerivativesUsedInNetInvestmentHedge" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_NotionalAmountOfForeignCurrencyDerivativesNet" abstract="false" name="NotionalAmountOfForeignCurrencyDerivativesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_EquityAffiliatesUSDDebtObligationsMember" abstract="true" name="EquityAffiliatesUSDDebtObligationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_EquityAffiliatesEURDebtObligationsMember" abstract="true" name="EquityAffiliatesEURDebtObligationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_IndemnificationAgreementsHoechstMember" abstract="true" name="IndemnificationAgreementsHoechstMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_DivestitureAgreementsMember" abstract="true" name="DivestitureAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_NumberOfDivestitureAgreements" abstract="false" name="NumberOfDivestitureAgreements" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ce_IndemnificationFloorAmount" abstract="false" name="IndemnificationFloorAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_IndemnificationCeilingAmount" abstract="false" name="IndemnificationCeilingAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_IndemnificationPercentageExceedingCeilingAmount" abstract="false" name="IndemnificationPercentageExceedingCeilingAmount" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_IndemnificationPercentageOther" abstract="false" name="IndemnificationPercentageOther" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ce_IncreaseDecreaseOfAccruedCapitalExpenditures" abstract="false" name="IncreaseDecreaseOfAccruedCapitalExpenditures" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ce_OtherForeignCountriesMember" abstract="true" name="OtherForeignCountriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_OneTimeTerminationBenefitsTypeAxis" abstract="true" name="OneTimeTerminationBenefitsTypeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="ce_OneTimeTerminationBenefitsTypeDomain" abstract="true" name="OneTimeTerminationBenefitsTypeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_CompanyWideBusinessOptimizationProjectsMember" abstract="true" name="CompanyWideBusinessOptimizationProjectsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_OtherMember" abstract="true" name="OtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ce_PlantOfficeClosures" abstract="false" name="PlantOfficeClosures" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
