Designation:D4734−20StandardSpecificationforRefinedBenzene-5451ThisstandardisissuedunderthefixeddesignationD4734;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversbenzene-545.1.2Thefollowingappliestoallspecifiedlimitsinthisstandard:forpurposesofdeterminingconformancewiththisstandard,anobservedvalueoracalculatedvalueshallberoundedoff“tothenearestunit”inthelastright-handdigitusedinexpressingthespecificationlimitinaccordancewiththerounding-offmethodinPracticeE29.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4ConsultcurrentOSHAregulations,supplier’sSafetyDataSheets,andlocalregulationsforallmaterialsusedinthisspecification.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D852TestMethodforSolidificationPointofBenzeneD1492TestMethodforBromineIndexofAromaticHydro-carbonsbyCoulometricTitrationD3437PracticeforSamplingandHandlingLiquidCyclicProductsD4735TestMethodforDeterminationofTraceThiopheneinRefinedBenzenebyGasChromatographyD5386TestMethodforColorofLiquidsUsingTristimulusColorimetryD5776TestMethodforBromineIndexofAromaticHydro-carbonsbyElectrometricTitrationD6875TestMethodforSolidificationPointofIndustrialOrganicChemicalsbyThermistorD7011TestMethodforDeterminationofTraceThiopheneinRefinedBenzenebyGasChromatographyandSulfurSelectiveDetectionD7183TestMethodforDeterminationofTotalSulfurinAromaticHydrocarbonsandRelatedChemicalsbyUltra-violetFluorescenceD7184TestMethodforUltraLowNitrogeninAromaticHydrocar...
