Designation:D1506−15(Reapproved2020)StandardTestMethodsforCarbonBlack—AshContent1ThisstandardisissuedunderthefixeddesignationD1506;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thesetestmethodscoverthedeterminationoftheashcontentofcarbonblack.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.ForspecificprecautionarystatementsseeSections6and13.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1799PracticeforCarbonBlack—SamplingPackagedShipmentsD1900PracticeforCarbonBlack—SamplingBulkShip-mentsD4483PracticeforEvaluatingPrecisionforTestMethodStandardsintheRubberandCarbonBlackManufacturingIndustries3.SummaryofTestMethod3.1Apre-driedsample(1hat125°C)isweighedbeforeandaftercombustionfor16hat550°C.Theremainingashisweighedandcalculatedasapercentofthedriedsample.4.SignificanceandUse4.1Theashcontentofacarbonblackistheamountofnon-carboncomponentspresentaftercombustion.Primarycontributantstoasharethemanufacturingprocesswaterandthecatalystinthefeedstock.MethodA—MuffleFurnaceMethod5.Apparatus5.1MuffleFurnace,capableoftemperatureregulationof625°Cat550°C.5.2Crucibles:5.2.1PorcelainCrucible,high-form,sizeO,ri...
