Designation:D1795−13(Reapproved2021)StandardTestMethodforIntrinsicViscosityofCellulose1ThisstandardisissuedunderthefixeddesignationD1795;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftheintrin-sicviscosityofpurifiedcellulosessuchasbleachedwoodpulps,cottonlinters,andregeneratedcellulose.Itisapplicabletoallcellulosesampleswithanintrinsicviscosityof15dL/gorless.Mostnative(unpurified)celluloseshaveintrinsicviscos-ityvaluestoohighformeasurementbythistestmethod.NOTE1—TheuseofcuprammoniumhydroxidesolutionforregularviscositydeterminationisdescribedinMethodT206m-55oftheTechnicalAssociationofPulpandPaperIndustryon“CuprammoniumDisperseViscosityofPulp,”andJointArmy-NavySpecificationsJAN-C-206.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D445TestMethodforKinematicViscosityofTransparentandOpaqueLiquids(andCalculationofDynamicViscos-ity)D629TestMethodsforQuantitativeAnalysisofTextilesE1SpecificationforASTMLiquid-in-GlassThermometersE2251SpecificationforLiquid-in-GlassASTMThermom-eterswithLow-HazardPrecisionLiquids3.SummaryofTestMethod3.1Aweighedsampleofthematerialisdissolvedina0.5Mcupriethyle...
