Designation:D7679−16(Reapproved2020)StandardTestMethodforSulfurContentinCarbonBlackFeedstockOils1ThisstandardisissuedunderthefixeddesignationD7679;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheinstrumentaldeterminationofsulfurcontentinsamplesofcarbonblackfeedstockoils.Valuesobtainedrepresentthetotalsulfurcontent.Twoanalysismethodsareavailableforuse:TestMethodA:High-TemperatureCombustionWithInfraredAbsorptionDetectionProceduresSections4–10TestMethodB:X-RayFluorescenceSections13–171.2Thistestmethodisapplicabletocarbonblackfeedstockoilsderivedfrompetroleum,coal,andothersourceswhichincludefueloils,residues,tars,pitches,reclaimedoils,andsimilarmaterialsthatarenormallyhandledasliquids.Thistestmethodisapplicabletoproductstypicallycontaining0to5mass%sulfur.1.3Theresultsofthesetestscanbeexpressedasmass%sulfur.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1619TestMethodsforCarbonBlack—SulfurContentD4057PracticeforManualSamplingofPetroleumandPetroleumProductsD4177PracticeforAutomaticSamplingofPetroleumandPetroleumProductsD4483PracticeforEvaluatingPrecisionforTestMethodStandardsintheRubberandCarbonBlackM...
