Designation:D4603−03(Reapproved2011)´1StandardTestMethodforDeterminingInherentViscosityofPoly(EthyleneTerephthalate)(PET)byGlassCapillaryViscometer1ThisstandardisissuedunderthefixeddesignationD4603;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.´1NOTE—Reapprovedwitheditorialchangeto6.5inNovember2011.1.Scope1.1Thistestmethodisforthedeterminationoftheinherentviscosityofpoly(ethyleneterephthalate)(PET)solubleat0.50%concentrationina60/40phenol/1,1,2,2-tetrachloroethanesolutionbymeansofaglasscapillaryvis-cometer.HighlycrystallineformsofPETthatarenotsolubleinthissolventmixturewillrequireadifferentprocedure.1.2TheinherentviscosityvaluesobtainedbythistestmethodarecomparablewiththoseobtainedusingdifferentialviscometrydescribedinTestMethodD5225.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.SpecifichazardsstatementsaregiveninSection8.NOTE1—ThistestmethodandISO1628-5aresimilarbutnottechni-callyequivalent.ThisISOstandardgivesanoptionofsolventsforPET.SolventspecifiedinthisASTMtestmethodisoneoftheoptionsintheISOmethod.ISOalsousesType1CUbbelohdeviscometer,ratherthanthe1B,andreportsviscositynumber,ratherthaninherentviscosity.2.ReferencedDocuments2.1ASTMStandards:2D445TestMethodforKinematicViscosityofTransparentandOpaqueLiquids(andCalculationofDynamicViscos-ity)D446SpecificationsandOperatingInstructionsforGlassCapillaryKinematicViscometersD1972PracticeforGenericMarkingofPlasticProductsD5225TestMethodforMeasuringSolutionViscosityofPolymerswithaDifferentialViscometerE1Specific...
