Designation:D3760−18StandardTestMethodforAnalysisofIsopropylbenzene(Cumene)byGasChromatography1ThisstandardisissuedunderthefixeddesignationD3760;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationofthepurityofisopropylbenzene(cumene)bygaschromatography.1.2Thistestmethodhasbeenfoundapplicabletothemeasurementofimpuritiessuchasnonaromatichydrocarbons,benzene,ethylbenzene,t-butylbenzene,n-propylbenzene,alpha-methylstyrene,sec-butylbenzene,anddiisopropylbenzene,whicharecommontothemanufacturingprocessofisopropylbenzene.Thelimitofquantitationfortheseimpuritiesaverages0.0030wt.%basedonthedatainTable2,whilethelimitofdetectionfortheseimpuritiesaverages0.0010wt.%.Thismethodhasbeenfoundapplicableforconcentrationsofvariouscomponentsupto0.0571wt.%.1.3Indeterminingtheconformanceofthetestresultsusingthismethodtoapplicablespecifications,resultsshallberoundedoffinaccordancewiththerounding-offmethodofPracticeE29.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection7.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D3437PracticeforSamplingandHandlingLiquidCyclicProductsD6809GuideforQualityControlandQualityAssuranceProcedures...
