Designation:D3591−97(Reapproved2011)StandardTestMethodforDeterminingLogarithmicViscosityNumberofPoly(VinylChloride)(PVC)inFormulatedCompounds1ThisstandardisissuedunderthefixeddesignationD3591;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftheloga-rithmicviscositynumberofpoly(vinylchloride)(PVC)ho-mopolymersaftercompoundingorprocessing.1.2Itisthebasicassumptionofthistechniquethattheformulationofthecompoundedresinisknownandthatanyadditivespresentcanbeseparatedfromtheresinbyextractionwithdiethylether.Thisisnecessarytopermitadjustmentoftheamountofsampleusedinthetesttogivearesinconcentrationincyclohexanoneof0.260.002g/100mL.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Specificprecau-tionarystatementsaregivenin7.3and8.4.1.NOTE1—ThistestmethodandISO1628-2arenotequivalent.2.ReferencedDocuments2.1ASTMStandards:2D445TestMethodforKinematicViscosityofTransparentandOpaqueLiquids(andCalculationofDynamicViscos-ity)D446SpecificationsandOperatingInstructionsforGlassCapillaryKinematicViscometersD1243TestMethodforDiluteSolutionViscosityofVinylChloridePolymersD2124TestMethodforAnalysisofComponentsinPoly(Vi-nylChloride)CompoundsUsinganInfraredSpectropho-tometricTechniqueE1SpecificationforASTMLiquid-in-GlassThermometersE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethodIEEE/ASTMSI-10StandardfortheUseofInternationalSystemofUnits(SI)2.2ISOStandard:1628-2Plastics—DeterminationofViscosityNumberandLimitingViscosityNumber—Part2:Poly(VinylChlo-ride)Resins33.Terminology3.1Unitsandsymbolsusedinthistestmethodaret...
