Designation:D6047−17(Reapproved2021)StandardTestMethodsforRubber,Raw—Determinationof5-Ethylidenenorbornene(ENB)orDicyclopentadiene(DCPD)inEthylene-Propylene-Diene(EPDM)Terpolymers1ThisstandardisissuedunderthefixeddesignationD6047;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverthedeterminationofthecontentof5-ethylidenenorbornene(ENB)orDicyclopentadi-ene(DCPD)inethylene-propylene-diene(EPDM)terpoly-mers.Theyareapplicabletodienecontentsinthe0.1to10mass%range.1.2ENBandDCPDaredienesintroducedinethylene/propylenerubberstogeneratespecificcureproperties.Sincehighprecisionfordienecontentdeterminationhasbecomeveryimportant,aFourierTransformInfraredSpectroscopic(FTIR)methodwasdeveloped.Dienedeterminationwasperformedinthepastbyarefractiveindextechnique.NOTE1—Theproceduresfor%ENBand%DCPDdifferonlyinthelocationintheinfrared(IR)oftheIRpeakbeingquantified.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D297TestMethodsforRubberProducts—ChemicalAnaly-sisD1416TestMethodsforRubberfromSyntheticSources—ChemicalAnalysis(Withdrawn1996)3D3568TestMethodsforRubber—EvaluationofEPDM(EthylenePropyleneDieneTerpolymers)Includin...
