Designation:D3443−00(Reapproved2015)StandardTestMethodforChlorideinTrichlorotrifluoroethane1ThisstandardisissuedunderthefixeddesignationD3443;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationofchlorideintrichlorotrifluoroethaneandotherhalocarbonsthatareliquidatroomtemperature.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.SummaryofTestMethod2.1Thistestmethodisbasedonthedeterminationofionizablechloridebytitrationwithmercuricacetatesolutionusings-diphenylcarbazoneastheindicator.3.SignificanceandUse3.1Thistestmethoddeterminesionizablechloridethatcanbeaqueouslyextractedfromtrichlorotrifluoroethane.3.2Thistestmethodcanbeusedtoestablishproductionandpurchasingspecifications.4.Apparatus4.1SeparatoryFunnels,two250-mL,withpolytetra-fluoroethylenestopcocks.4.2ErlenmeyerFlask,125-mL.5.Reagents5.1PurityofReagents—Reagentgradechemicalsshallbeusedinalltests.Unlessotherwiseindicated,itisintendedthatallreagentsshallconformtothespecificationsoftheCommit-teeonAnalyticalReagentsoftheAmericanChemicalSociety,wheresuchspecificationsareavailable.2Othergradesmaybeused,provideditisfirstascertainedthatthereagentisofsufficientlyhighpuritytopermititsusewithoutlesseningtheaccuracyofthedetermination.5.2PurityofWater—Unlessotherwiseindicated,referencestowatershallbeunderstoodtomeanhalide-freedistilledwater.5.3s-DiphenylcarbazoneSolution—Dissolve0.5gofs-diphenylcarbazone,in100...
