Designation:D2427−06(Reapproved2019)StandardTestMethodforDeterminationofC2throughC5HydrocarbonsinGasolinesbyGasChromatography1ThisstandardisissuedunderthefixeddesignationD2427;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthetwo(C2)throughfive(C5-)carbonparaffinsandmono-olefinsingasolines.Theconcentrationsbyvolumeormass(weight)ofthefollowingcomponentsaregenerallyreported:1.1.1Ethyleneplusethane1.1.2Propane1.1.3Propylene1.1.4Isobutane1.1.5n-Butane1.1.6Butene-1plusisobutylene1.1.7trans-Butene-21.1.8cis-Butene-21.1.9Isopentane1.1.103-Methylbutene-11.1.11n-Pentane1.1.12Pentene-11.1.132-Methylbutene-11.1.14trans-Pentene-21.1.15cis-Pentene-21.1.162-Methylbutene-21.2Thistestmethoddoesnotcoverthedeterminationofcyclicolefins,diolefins,oracetylenes.Theseareusuallyminorcomponentsinfinishedgasolines.1.3Samplestobeanalyzedshouldnotcontainsignificantamountsofmaterialboilinglowerthanethylene.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4.1Exception—Alternativeunits,incommonusage,arealsoprovidedtoimprovetheclarityandaidtheuserofthistestmethod.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D2001TestMethodforDepentanizationofGasolineandNapht...
