Designation:D6468−22StandardTestMethodforHighTemperatureStabilityofMiddleDistillateFuels1ThisstandardisissuedunderthefixeddesignationD6468;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversrelativestabilityofmiddledistillatefuelsunderhightemperatureagingconditionswithlimitedairexposure.ThistestmethodissuitableforallNo.1andNo.2gradesinSpecificationsD396,D975,D2880,andD3699.Itisalsosuitableforsimilarfuelsmeetingotherspecifications.1.2Thistestmethodisnotsuitableforfuelswhoseflashpoint,asdeterminedbyTestMethodsD56,D93,orD3828,islessthan38°C.Thistestmethodisnotsuitableforfuelscontainingresidualoil.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3.1Exception—Themaximumvacuumincludesinch-poundunitsin6.5and11.2.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D56TestMethodforFlashPointbyTagClosedCupTesterD93TestMethodsforFlashPointbyPensky-MartensClosedCupTesterD396SpecificationforFuelOilsD975SpecificationforDieselFuelD1500TestMethodforASTMColorofPetroleumProducts(ASTMColorScale)D2274TestMethodforOxidationStabilityofDistillateFuelOil(AcceleratedMethod)D2880SpecificationforGasTurbineFuelOilsD3699SpecificationforKerosineD3828TestMethodsforFlashPointbySmallSc...
