Designation:D1627–94(Reapproved2000)StandardTestMethodsforChemicalAnalysisofAcidCopperChromate1ThisstandardisissuedunderthefixeddesignationD1627;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverthechemicalanalysisofsolidacidcopperchromateandsolutionsofthismaterial.1.1.1TestMethodD38coversthesamplingofwoodpreservativespriortotesting.1.2Theanalyticalproceduresappearinthefollowingorder:SectionsCopper(calculatedasCuO)7to10Hexavalentchromium(calculatedasCrO3)11to13pHofsolution141.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:D38TestMethodsforSamplingWoodPreservativesPriortoTesting2D1003TestMethodforHazeandLuminousTransmittanceofTransparentPlastics3D1035TestMethodsforChemicalAnalysisofFluor-Chrome-Arsenate-Phenol2D1193SpecificationforReagentWater4D1326MethodsforChemicalAnalysisofAmmoniacalCopperArsenate2D1624SpecificationforAcidCopperChromate2D1628TestMethodsforChemicalAnalysisofChromatedCopperArsenate2E70TestMethodforpHofAqueousSolutionswiththeGlassElectrode52.2OtherStandard:AWPAA2StandardMethodsforAnalysisofWaterbornePreservativesandFire-RetardantFormulations63.SummaryofTestMethods3.1Copper—AmeasuredsampleisreactedwithHydro-chloricAcidandPotassiumIodidetocomplexthecopperion.ThesolutionisthentitratedwithastandardsolutionofSodiumThiosulfate.TheCopperiscalculatedasCuO.3.2Chromium—AdilutedandchemicallytreatedsampleisreactedwithanexcessofFerrousAmmoniumSulfate.TheunreactedFerrousAmmoniumSulfateistitratedwithastan-dardsolutionofPotassiumDichromatetodeterminetheconsumedchromium.HexavalentChromiumiscalculatedas...
