Designation:D3591−17StandardTestMethodforDeterminingLogarithmicViscosityNumberofPoly(VinylChloride)(PVC)inFormulatedCompounds1ThisstandardisissuedunderthefixeddesignationD3591;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationoftheloga-rithmicviscositynumberofpoly(vinylchloride)(PVC)ho-mopolymersaftercompoundingorprocessing.1.2Itisthebasicassumptionofthistechniquethattheformulationofthecompoundedresinisknownandthatanyadditivespresentcanbeseparatedfromtheresinbyextractionwithdiethylether.Thisisnecessarytopermitadjustmentoftheamountofsampleusedinthetesttogivearesinconcentrationincyclohexanoneof0.260.002g/100mL.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Specificprecautionarystatementsaregivenin7.3and8.4.1.NOTE1—ThistestmethodandISO1628-2arenotequivalent.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D445TestMethodforKinematicViscosityofTransparentandOpaqueLiquids(andCalculationofDynamicViscos-ity)D446SpecificationsandOperatingInstructionsforGlassCapillaryKinematicViscometersD1243TestMethodforDiluteSolutionViscosityofVinylChloridePolymersD2124TestMethodforAnalysisofComponentsinPoly(Vi-nylChloride)CompoundsUsinganInfraredSpectropho-tometricTechniqueE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethodE2251...
