Designation:D2112−01a(Reapproved2007)StandardTestMethodforOxidationStabilityofInhibitedMineralInsulatingOilbyPressureVessel1ThisstandardisissuedunderthefixeddesignationD2112;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversandisintendedasarapidmethodfortheevaluationoftheoxidationstabilityofnewmineralinsulatingoilscontainingasyntheticoxidationinhibi-tor.Thistestisconsideredofvalueincheckingtheoxidationstabilityofnewmineralinsulatingoilscontaining2,6-ditertiary-butylpara-cresolor2,6-ditertiary-butylphenol,orboth,inordertocontrolthecontinuityofthispropertyfromshipmenttoshipment.Theapplicabilityofthisprocedureforusewithinhibitedmineralinsulatingoilsofmorethan12cStat40°C(approximately65SUSat100°F)hasnotbeenestablished.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.(Seewarningin6.7.)NOTE1—Amodificationofthistestmethod,whichusesthesameprocedureandapparatusbutahigher(150°C)bathtemperature,hasbeenpublishedasTestMethodD2272.2.ReferencedDocuments2.1ASTMStandards:2B1SpecificationforHard-DrawnCopperWireD2272TestMethodforOxidationStabilityofSteamTur-bineOilsbyRotatingPressureVesselE1SpecificationforASTMLiquid-in-GlassThermometers3.SummaryofTestMethod3.1Thetestspecimenisagitatedbyrotatingaxiallyat100rpmatanangleof30°fromthehorizontal,underaninitialoxygenpressureof90psi(620kPa),inastainlesssteelorcoppervessel(forrapidtemperatureequilibrium),withaglasstestspecimencontainerandcoppercatalystcoil,inthepres-enceofwater,atabathtemperatureof140°C.Thetimeforanoiltoreactwithagivenvolum...
