Designation:D1492−13StandardTestMethodforBromineIndexofAromaticHydrocarbonsbyCoulometricTitration1ThisstandardisissuedunderthefixeddesignationD1492;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationoftheamountofbromine-reactivematerialinaromatichydrocarbons.Itisusuallyappliedtomaterialshavingbromineindexesbelow500.NOTE1—Othertestmethodsfordeterminingbromine-reactivematerialareTestMethodsD1159,D1491,D2710,andD5776.1.2Thistestmethodhasbeenfoundapplicabletoaromatichydrocarbonscontainingnomorethantraceamountsofolefinsandthataresubstantiallyfreefrommateriallighterthanisobutaneandhaveadistillationendpointunder288°C.1.3Thefollowingappliestoallspecifiedlimitsinthistestmethod:Forpurposesofdeterminingconformancewiththistestmethod,anobservedvalueoracalculatedvalueshallberoundedoff“tothenearestunit”inthelastright-handdigitusedinexpressingthespecificationlimit,inaccordancewiththerounding-offmethodofPracticeE29.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.ForaspecifichazardstatementseeSection8.2.ReferencedDocuments2.1ASTMStandards:2D891TestMethodsforSpecificGravity,Apparent,ofLiquidIndustrialChemicalsD1159TestMethodforBromineNumbersofPetroleumDistillatesandCommercialAliphaticOlefinsbyElectro-metricTitrationD1193SpecificationforReagentWaterD1491TestMethodforTestforBromineIndexofAromaticHydrocarbonsbyPotentiometricTitration(Withdrawn1985)3D2710TestMethodforBromineIndexofPetroleumHydro-carbonsbyElectrometricTitrationD3437Practicef...
