Designation:D6714−16StandardTestMethodforChromicOxideinAshedWetBlue(PerchloricAcidOxidation)1ThisstandardisissuedunderthefixeddesignationD6714;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThistestmethodcoversthedeterminationofchromicoxideinWetBluethathasbeenpartlyorcompletelytannedwithchromiumcompounds.Ingeneralthesampleswillcon-tainchromiumcontentbetween1and5%,calculatedaschromicoxideexpresseduponadrybasisotherwisereferredtoasmoisture-freebasis(mfb).1.2ThistestmethodisspecificinthatitappliestoasampleorsamplesthataretheresultantashfollowingtheexecutionofTestMethodD6716.1.3ThistestmethoddoesnotapplytoWetWhite.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.SpecifichazardsaregiveninSection8.2.ReferencedDocuments2.1ASTMStandards:2D6658TestMethodforVolatileMatter(Moisture)ofWetBluebyOvenDryingD6659PracticeforSamplingandPreparationofWetBlueandWetWhiteforPhysicalandChemicalTestsD6716TestMethodforTotalAshinWetBlueorWetWhiteE180PracticeforDeterminingthePrecisionofASTMMethodsforAnalysisandTestingofIndustrialandSpe-cialtyChemicals(Withdrawn2009)33.Terminology3.1Definitions—Thetermsanddefinitionsemployedwithinthistestmethodarecommonlyusedinnormallaboratorypracticeandrequirenospecialcomment.4.SummaryofTestMethod4.1TheperchloricacidmethodmaybeappliedtotheashobtainedinTestMethodD6716.Theresultantashisdissolvedintoacidicsolutioninablendofnitricacidandapreparedoxidationmixtureconsistingofsulfuricandperchloricacids.Oncecompleted,oxidationofalltrivalenttohexavalentchro...
