Designation:D7995−19StandardTestMethodforTotalWaterinLiquidButanebyLiquefiedGasSamplerandCoulometricKarlFischerTitration1ThisstandardisissuedunderthefixeddesignationD7995;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThistestmethoddescribestheuseofaspecializedliquefiedgassamplercoupledtoacoulometricKarlFischer(KF)titratorforthedeterminationofwaterinliquidbutanewithwaterconcentrationsfrom1mg⁄kgto100mg⁄kg.NOTE1—OtherliquefiedpetroleumgasesdescribedinSpecificationD1835includingpropane,propene(propylene),butylenesandmixturesofthesematerialsandotherlighthydrocarbons,anddimethyletherdescribedinSpecificationD7901,canbeanalyzedbythismethodbuttheprecisionhasnotbeenstudiedandthereforethestatedprecisionhasnotbeenvalidatedforthesematerials.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesafterSIunitsareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.SeeSection10forspecificwarningstatements.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1265PracticeforSamplingLiquefiedPetroleum(LP)Gases,ManualMethodD1835SpecificationforLiquefiedPetroleum(LP)GasesD2713TestMethodforDrynessofPropane(ValveFreezeMethod)D3700PracticeforObtainingLPGSamplesUsingaFloat-ingPistonCylinderD5623TestMethodforSulfurCompoundsi...
