Designation:D1965–87(Reapproved1998)StandardTestMethodforUnsaponifiableMatterinDryingOils,FattyAcids,andPolymerizedFattyAcids1ThisstandardisissuedunderthefixeddesignationD1965;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationoftheunsa-ponifiablematterpresentinallnaturalandsyntheticdryingoilsandtheirfattyacidsandanyotherfattyacidsorpolymerizedfattyacidsusedinprotectivecoatings.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:D460TestMethodsforSamplingandChemicalAnalysisofSoapsandSoapProducts2D1193SpecificationforReagentWater3D1466TestMethodforSamplingLiquidOilsandFattyAcidsCommonlyUsedinPaints,Varnishes,andRelatedMaterials42.2AOSCStandard:SpecificationH2-4153.Terminology3.1Definitions:3.1.1unsaponifiablematter—substancesfrequentlyfounddissolvedinfattyacidsthatcannotbesaponifiedbysodiumhydroxideorpotassiumhydroxideundertheconditionspre-scribedbutaresolubleintheordinaryfatsolvents.Includedarethehigheraliphaticalcohols,sterols,pigments,andhydrocar-bons.4.SignificanceandUse4.1Themajorcomponentsofdryingoilsandfattyacidscanbesaponifiedbyreactionwithalkaliandconvertedtowater-solublesoaps.Thistestmethoddeterminestheamountofmaterialpresentthatissolubleintheoilbutisnotsaponifiable.Underconditionsofthistestmethod,thismaterialisnotconvertedtoawater-solublesoapandisextractedfromthesaponificationmixturewithpetroleumether.4.2Asmallamountofunsaponifiablematerialischaracter-isticofdryingoilsandfattyacidshoweveralargeamountindicatescontam...
