Designation:D1243−15StandardTestMethodforDiluteSolutionViscosityofVinylChloridePolymers1ThisstandardisissuedunderthefixeddesignationD1243;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationofthedilutesolutionviscosityofvinylchloridepolymersincyclo-hexanone.Theviscosityisexpressedintermsofinherentviscosity(logarithmicviscositynumber).Thetestmethodislimitedtothosematerialsthatgiveclear,uniformsolutionsatthetestdilution.NOTE1—OtherexpressionsforviscositymaybeusedasdescribedintheAppendix,butanychangefromthetestmethodasspecifiedshallbestatedinthereport.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.NOTE2—ThisstandardandISO1628-2addressthesamesubjectmatter,butdifferintechnicalcontent.2.ReferencedDocuments2.1ASTMStandards:2D445TestMethodforKinematicViscosityofTransparentandOpaqueLiquids(andCalculationofDynamicViscos-ity)D446SpecificationsandOperatingInstructionsforGlassCapillaryKinematicViscometersD883TerminologyRelatingtoPlasticsD1600TerminologyforAbbreviatedTermsRelatingtoPlas-ticsD1755SpecificationforPoly(VinylChloride)ResinsD2857PracticeforDiluteSolutionViscosityofPolymersE2251SpecificationforLiquid-in-GlassASTMThermom-eterswithLow-HazardPrecisionLiquids2.2ISOStandard:ISO1628-2DeterminationofViscosityNumberandLimit-ingViscosityNumber—Part2:Poly(VinylChloride)Res-ins32.3NationalInstituteofStandardsandTechnologyCircu-lar:4C-434TestingofGlassVolumetricApparatus3.Terminology3.1Definitions—DefinitionsareinaccordancewithTermi-nologyD883andTerminologyD1600,unlessotherwisein...
