Designation:D7318−19´1StandardTestMethodforExistentInorganicSulfateinEthanolbyPotentiometricTitration1ThisstandardisissuedunderthefixeddesignationD7318;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.NOTE—Subsection11.2.1wascorrectedandtheyeardatechangedonFebruary14,2019.Footnote1wascorrectededitoriallyinDecember2019.1.Scope*1.1Thistestmethodcoversapotentiometrictitrationpro-cedurefordeterminingtheexistentinorganicsulfatecontentofhydrous,anhydrousethanol,andanhydrousdenaturedethanol,whichisaddedasablendingagentwithsparkignitionfuels.Itisintendedfortheanalysisofdenaturedethanolsamplescontainingbetween1.0mg⁄kgto20mg⁄kgexistentinorganicsulfate.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.MaterialSafetyDataSheetsareavailableforreagentsandmaterials.Reviewthemforhazardspriortousage.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterD4052TestMethodforDensity,RelativeDensity,andAPIGravityofLiquidsbyDigitalDensityMeterD4057PracticeforManualSamplingofPetroleumandPetroleumProductsD4177PracticeforAutomaticSamplingofPetroleumandPetroleumProductsD6299PracticeforApplyingStatisticalQualityAssuranceandControlChartingTechniquestoEvaluateAnalyticalMeasurementSys...
