Designation:D3057–94StandardTestMethodforMoistureinAerosolProducts1ThisstandardisissuedunderthefixeddesignationD3057;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationofmoistureinaerosolproducts.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.AspecificwarningstatementisgiveninNote1.2.ReferencedDocuments2.1ASTMStandards:D1193SpecificationforReagentWater23.SummaryofTestMethod3.1Moistureisdeterminedinanaerosolproductbyback-titratingthespecimen,towhichKarlFischerreagenthasbeenadded,withamethanol-watersolution.AratiobetweenthemethanolandKarlFischerreagentisobtained,andtheKarlFischerreagentisstandardizedagainstsodiumtartratedihy-drate.4.SignificanceandUse4.1Moderateconcentrationofwaterincertainaerosolformulationscanleadtometalliccancorrosion.NOTE1—Warning:Contaminatedprimaryalcoholswithwaterlevelsof1to2%canproducehydrogengasinaluminumcontainerscausingthemtorupture.4.2Ketones,suchasacetone,canproducefalselyhighresults.5.Apparatus5.1ClosedContainers,glass,three.5.2Stirrer,magnetic.6.Reagents6.1PurityofReagents—Reagentgradechemicalsshallbeusedinalltests.Unlessotherwiseindicated,itisintendedthatallreagentsshallconformtothespecificationsoftheCommit-teeonAnalyticalReagentsoftheAmericanChemicalSociety,wheresuchspecificationsareavailable.3Othergradesmaybeused,provideditisfirstascertainedthatthereagentisofsufficientlyhighpuritytopermititsusewithoutlesseningtheaccuracyofthedetermination.6.2PurityofWater—Unlessotherwiseindicated,referencestowatershallbeunderstoodtomeanwat...
