Designation:D5353−95(Reapproved2012)StandardTestMethodforDeterminationofTotalDesulfatedFattyMatter1ThisstandardisissuedunderthefixeddesignationD5353;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthetotaldesulfatedfattymatterinasampleofsulfatedoilsbydecom-positionwithdilutedmineralacidsandextractionofthedecomposedfat.Thistestmethodisnotapplicabletosamplesthatarenotcompletelydecomposeduponboilingwithmineralacids.ThistestmethodwasderivedfromTestMethodsD500,Sections29through32.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D500TestMethodsofChemicalAnalysisofSulfonatedandSulfatedOilsD5350TestMethodforDeterminationofOrganicallyCom-binedSulfuricAnhydridebyTitration,TestMethodAD5351TestMethodforDeterminationofOrganicallyCom-binedSulfuricAnhydridebyExtractionTitration,TestMethodB3.SignificanceandUse3.1Thistestmethodisintendedforthedeterminationofthetotaldesulfatedmattercontainedinsulfatedoilsfollowingtheirtotaldecompositionwithdilutemineralacid.4.Reagents4.1EthylEther.4.2SulfuricAcid(1+19)—Carefullymixonevolumeofconcentratedsulfuricacid(H2SO4,spgr1.84)into19volumesofwaterwhilestirring.5.Procedure5.1TheprocedureconsistsofdecomposingthesamplewithH2SO4,extractingthefattymatterwithether,evaporatingthesolvent,andweighingtheresidue.Aftercooling,transferthetitratedsolutionobtainedafterdeterminingorganicallycom-binedsulfuricanhydrideinaccordancewithTestMethodD5350orTestMethodD5351(6.1.2)intoa...
