Designation:D4322–96(Reapproved2001)e1StandardTestMethodforResidualAcrylonitrileMonomerStyrene-AcrylonitrileCopolymersandNitrileRubberbyHeadspaceGasChromatography1ThisstandardisissuedunderthefixeddesignationD4322;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.e1NOTE—SeveralsectionswerechangededitoriallyinMarch2001.1.Scope1.1Thistestmethodissuitablefordeterminingtheresidualacrylonitrile(RAN)contentofstyrene-acrylonitrile(SAN)copolymer,rubber-modifiedacrylonitrile-butadiene-styrene(ABS)resins,andnitrilerubber(NBR).1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Specificprecau-tionarystatementsaregiveninSection9.NOTE1—AlthoughthepackedcolumnoptionofthistestmethodandISO4581:1994(E)differinsomedetails,dataobtainedusingeithertestmethodshouldbetechnicallyequivalent.ThereisnoequivalentISOstandardforthecapillarycolumnoptionofthistestmethod.2.ReferencedDocuments2.1ASTMStandards:D4526PracticeforDeterminationofVolatilesinPolymersbyHeadspaceGasChromatography2E691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3IEEE/ASTMSI-10StandardforUseoftheInternationalSystemofUnits(SI):TheModernMetricSystem43.Terminology3.1UnitsandSymbolsusedinthistestmethodarethoserecommendedinIEEE/ASTMSI-10.3.2Abbreviations:Abbreviations:3.2.1AN—acrylonitrile.3.2.2RAN—residualacrylonitrile.3.2.3SAN—styrene-acrylonitrilecopolymer.3.2.4ABS—acrylonitrile-butadiene-styrenecopolymer.3.2.5NBR—butadiene-acrylonitrilerubber.3.2.6DMAC—N,N-dimethylacetamide.3.2.7PN—propionitrile(internalstandard).3.2.8PC—propylenecarbonate.3.2.9ppm—µgRAN/gpolymer(partspermillion).4.Summaryof...
