Designation:D873−12(Reapproved2018)BritishStandard4456Designation:138/99StandardTestMethodforOxidationStabilityofAviationFuels(PotentialResidueMethod)1ThisstandardisissuedunderthefixeddesignationD873;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethod2coversthedeterminationofthetendencyofaviationreciprocating,turbine,andjetenginefuelstoformgumanddepositsunderacceleratedagingconditions.(Warning—Thistestmethodisnotintendedfordeterminingthestabilityoffuelcomponents,particularlythosewithahighpercentageoflowboilingunsaturatedcompounds,asthesemaycauseexplosiveconditionswithintheapparatus.)NOTE1—Forthemeasurementoftheoxidationstability(inductionperiod)ofmotorgasoline,refertoTestMethodD525.1.2TheacceptedSIunitofpressureisthekilopascal(kPa);theacceptedSIunitoftemperatureis°C.1.3WARNING—Mercuryhasbeendesignatedbymanyregulatoryagenciesasahazardousmaterialthatcancausecentralnervoussystem,kidneyandliverdamage.Mercury,oritsvapor,maybehazardoustohealthandcorrosivetomaterials.Cautionshouldbetakenwhenhandlingmercuryandmercurycontainingproducts.SeetheapplicableproductMa-terialSafetyDataSheet(MSDS)fordetailsandEPA’swebsite—http://www.epa.gov/mercury/faq.htm—foraddi-tionalinformation.Usersshouldbeawarethatsellingmercuryand/ormercurycontainingproductsintoyourstateorcountrymaybeprohibitedbylaw.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononP...
