Designation:D6017−97(Reapproved2020)´1StandardTestMethodforDeterminationofMagnesiumSulfate(EpsomSalt)inLeather1ThisstandardisissuedunderthefixeddesignationD6017;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.ε1NOTE—AneditorialchangetoupdatethesourceofFederalTestStandardNo.311wasmadeinApril2020.1.Scope1.1Thistestmethodcoversquantitativelydeterminingthemagnesiumsulfate(epsomsalt)inleather.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D3790TestMethodforVolatileMatter(Moisture)ofLeatherbyOvenDrying2.2FederalStandards:FederalTestStandardNo.311,Method6541MagnesiumSulfate(EpsomSalt)33.SignificanceandUse3.1Thistestmethoddistinguishesmagnesiumsulfatefromotherwatersolublenon-tanningsaltsfoundinleather.4.Apparatus4.1PlatinumCrucible.4.2FilteringCrucible.4.3SuctionFlask.4.4MuffleFurnace.5.Reagents5.1HydrochloricAcid,specificgravity1.19.5.2NitricAcid,specificgravity1.42.5.3AmmoniumChloride.5.4AmmoniumHydroxide,1to1and1to9partsbyvolumewithdistilledwater.5.5AmmoniumNitrateSolution,10gdissolvedindistilledwaterandmadeupto100mL.5.6AmmoniumOxalate,saturatedsolution.5.7Ferric...
