Designation:D1468–93(Reapproved2001)StandardTestMethodforVolatileMatterinTricresylPhosphate1ThisstandardisissuedunderthefixeddesignationD1468;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thistestmethodcoversaprocedurefordeterminingthevolatilematterintricresylphosphate.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection4.1.3Forhazardinformationandguidance,seethesupplier’sMaterialSafetyDataSheet.2.SignificanceandUse2.1Thistestmethodprovidesameasurementofvolatilematterintricresylphosphate.Theresultsofthismeasurementcanbeusedforspecificationacceptanceanddeterminingperformanceinplasticizeruse.3.Apparatus3.1Oven,thermostaticallycontrolledat10565°C.3.2PetriDish,100-mmdiameter,orequivalent.4.Hazards4.1Tricresylphosphateishazardousthroughinhalationorskinabsorption.Takecareinhandlingthematerial.4.2Ortho-isomeroftricresylphosphateisconsideredtoxic.Traceamountsmaybepresentintricresylphosphatespeci-mens.5.Procedure5.1Placeaflataluminum,glass,orporcelaindishinanovenat10565°Cfor1h.Coolinadesiccatorandweighto10mg.Spreadevenlyoverthebottomofthedishapproximately25gofthesample.Weighthedishandthespecimento10mgandplaceinanovenat10565°Cfor3h.Coolthedishandspecimeninadesiccator,andreweighto10mg.6.Calculation6.1Calculatethevolatilematterintricresylphosphateasfollows:Volatilematter,%5@~S2R!/S#3100(1)where:S=weightofspecimenused,g,andR=weightofspecimenafterheating,g.7.PrecisionandBias7.1Precision—Resultsshouldnotdifferfromthemeanbymorethanthefollowingamounts:Withinlaboratory...
