Designation:D3443−00(Reapproved2020)StandardTestMethodforChlorideinTrichlorotrifluoroethane1ThisstandardisissuedunderthefixeddesignationD3443;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationofchlorideintrichlorotrifluoroethaneandotherhalocarbonsthatareliquidatroomtemperature.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.SummaryofTestMethod2.1Thistestmethodisbasedonthedeterminationofionizablechloridebytitrationwithmercuricacetatesolutionusings-diphenylcarbazoneastheindicator.3.SignificanceandUse3.1Thistestmethoddeterminesionizablechloridethatcanbeaqueouslyextractedfromtrichlorotrifluoroethane.3.2Thistestmethodcanbeusedtoestablishproductionandpurchasingspecifications.4.Apparatus4.1SeparatoryFunnels,two250mL,withpolytetra-fluoroethylenestopcocks.4.2ErlenmeyerFlask,125mL.5.Reagents5.1PurityofReagents—Reagentgradechemicalsshallbeusedinalltests.Unlessotherwiseindicated,itisintendedthatallreagentsshallconformtothespecificationsoftheCommit-teeonAnalyticalReagentsoftheAmericanChemicalSociety,wheresuchspecificationsareavailable.2Othergradesmaybeused,providedit...
