Designation:D4443−13StandardTestMethodforDeterminingResidualVinylChlorideMonomerContentinPPBRangeinVinylChlorideHomo-andCo-PolymersbyHeadspaceGasChromatography1ThisstandardisissuedunderthefixeddesignationD4443;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodissuitablefordeterminingtheresidualvinylchloridemonomer(RVM)contentofhomopolymerandcopolymersofvinylchloridedowntoalevelof;5ppb.1.2Thistestmethodisapplicabletoanypolymerform,suchasresin,compound,film,bottlewall,etc.thatcanbedissolvedinasuitablesolvent.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninSection9andNote10.NOTE1—ThisstandardisequivalenttoISO6401.2.ReferencedDocuments2.1ISOStandard:ISO6401Plastics—HomopolymerandCopolymerResinsofVinylChloride—DeterminationofResidualVinylChlorideMonomer—GasChromatographicMethod22.2OSHAStandard:29CFR1919.1017VinylChloride33.Terminology3.1Abbreviations:3.1.1DMAc—N,N-dimethylacetamide.3.1.2VCM—Vinylchloridemonomer.4.SummaryofTestMethod4.1Samplesofvinylchloride-containingpolymersaredis-solvedinasuitablesolventinaclosedsystem.4.2Thepolymersolutionandheadspaceareequilibratedatanelevatedtemperature.4.3Aliquotsofheadspacegasareinjectedintoagaschromatographandthevinylchloridemonomerisseparated.Theresponseofvinylchloridemonomerisdeterminedbytheuseofoneofseveralsuggesteddetectors.4.4Calibrationisaccomplishedusingeither(a)vinylchlo-ridemonomerinnitrogengasstandards,(b)standardsolutionscontainingknownamountsofvinylchloridemonomer,or(c)amethodofstandardaddition.5.SignificanceandUse5.1Vinylchloride-containingpolymersarewidel...
