Designation:D3634−21StandardTestMethodforTraceChlorideIoninEngineCoolants1ThisstandardisissuedunderthefixeddesignationD3634;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationofchlorideioninenginecoolantsintherangefrom5ppmto200ppminthepresenceofupto0.6weight%mercaptobenzothiazole.1.2Othermaterialsthatreactwithsilverionwillinterfere.1.3Chlorideinenginecoolantscontaininganaryltriazoleinsteadofmercaptobenzothiazolecanbedetermineddirectlybythistestmethodwithoutpretreatmentwithhydrogenper-oxide.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardsstatementsaregiveninSection7.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1176PracticeforSamplingandPreparingAqueousSolu-tionsofEngineCoolantsorAntirustsforTestingPurposesD1193SpecificationforReagentWaterE200PracticeforPreparation,Standardization,andStorageofStandardandReagentSolutionsforChemicalAnalysis2.2ManufacturingChemists’AssociationDocument:3MCAChemicalSafetyDataSheetSD-53PropertiesandEssentialInformationforSafeHandlingandUseofHydrogenPeroxide3.SummaryofTestMethod3.1ThesampleisfirsttreatedatapHof12to13withaq...
