Designation:D7862−19StandardSpecificationforButanolforBlendingwithGasolineforUseasAutomotiveSpark-IgnitionEngineFuel1ThisstandardisissuedunderthefixeddesignationD7862;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversbutanolintendedtobeblendedwithgasolineat1%to12.5%byvolumeforuseasanautomotivespark-ignitionenginefuel.1.1.1Butanolcontains22%bymassoxygen.Themasspercentofoxygenofabutanolblendwithgasolinedependsonthevolumepercentofbutanolblended,thedensityofthebutanolisomer,andthedensityofthebaseblendstock.1.1.2ThemaximumlimitonblendingisnotaperformancelimitbutacurrentregulatorylimitintheUnitedStates.1.2Thisspecificationcoversthreebutanolisomers:1-butanol,2-butanol,and2-methyl-1-propanol.Thisspecifica-tionspecificallyexcludes2-methyl-2-propanol(thatis,tert-butylalcohol).1.2.1Tert-butylalcoholhasdifferentphysicalproperties(meltingpoint,watermiscibility)thantheotherthreeisomers.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D381TestMethodforGumContentinFuelsbyJetEvapo-rationD1298TestMethodforDensity,RelativeDensity,orAPIGravityofCrudePetroleumandLiquidPetroleumProd-uctsbyHydrometerMethodD1613TestMethodforA...
