Designation:D1093−11(Reapproved2017)StandardTestMethodforAcidityofHydrocarbonLiquidsandTheirDistillationResidues1ThisstandardisissuedunderthefixeddesignationD1093;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthequalitativedeterminationoftheacidityofhydrocarbonliquidsandtheirdistillationresi-dues.(Warning—Manyhydrocarbonliquidsareextremelyflammable.Harmfulifinhaled.Hydrocarbonliquidvaporscancauseaflashfire.)1.2Ifdesiredtodeterminethebasicityofahydrocarbonliquid,proceedinaccordancewith9.2or9.3,butsubstitute3dropsofphenolphthaleinindicatorsolutionforthemethylorangeindicator.Apinkorredcolorintheaqueoussolutionwhenphenolphthaleinisusedindicatesbasicity.1.3Theresultsobtainedbythistestmethodarequalitativeexpressions.However,forthepreparationofreagentsandintheprocedure,acceptableSIunitsaretoberegardedasthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D86TestMethodforDistillationofPetroleumProductsandLiquidFuelsatAtmosphericPressureD91TestMethodforPrecipitationNumberofLubricatingOilsD850TestMethodforDistillationofIndustrialAromaticHydrocarbonsandRelatedMaterialsD1078TestMethodforDistillationRangeofVolatileOr-ganicLiquidsD1193SpecificationforRe...
