Designation:D5347−19aStandardTestMethodforDeterminationoftheAshContentofFatsandOils1ThisstandardisissuedunderthefixeddesignationD5347;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftheashcontentoffatsandoilsusedinthesofteningandstuffingofleatherandinthemanufactureoffatliquorsandothersofteningandstuffingcompounds.ThistestmethodwasderivedfromTestMethodD1951.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.SeeSection5forspecifichazardstatements.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1951TestMethodforAshinDryingOilsandFattyAcids(Withdrawn2003)33.SignificanceandUse3.1Thistestmethodisintendedtodeterminetheashcontentoffatsandoilsusedinthesofteningandstuffingofleather,aswellasthoseusedinthemanufactureofproductsforsuchpurpose.Theashcontentoffatsandoilsismeasuredforthepurposeofqualityassurance.4.Apparatus4.1Crucible,porcelainorhigh-silicaglass(Note1),50-mLcapacity.NOTE1—Platinumisnotrecommended.Boiledoilsoroilscontami-natedwithdrierscontainingleadmayruinplatinumbyalloyformation.4.2ElectricMuffleFurnace.4.3Desiccator,containinganefficientdesiccant.Anhydrouscalciumsulfate(CaSO4),phosphoruspentoxide(P2O5)orconcentratedsulfuricacid(H2S...
