Designation:D3969−01(Reapproved2012)StandardTestMethodforZirconiuminPaintDriersbyEDTAMethod1ThisstandardisissuedunderthefixeddesignationD3969;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthetitrimetricdeterminationofzirconiuminzirconiumdriersusedinthecoatingsindustryandutilizesthedisodiumsaltofethylenediaminetetraaceticaciddihydrate(EDTA).1.2Thistestmethodislimitedtothedeterminationofthezirconiumcontentofaliquidzirconiumdrierthatdoesnotcontainotherdrierelements.Thetestmethodisnotapplicabletodrierblendsanddoesnotdifferentiatehafniumfromzirconium.1.3AllcationsthatcanbetitratedwithEDTAinacidmediainterfereandmustnotbepresentinthesample.1.4Thistestmethodhasbeentestedforconcentrationsof6and12%zirconium,butthereisnoreasontobelievethatitisnotsuitableforhigherorlowerzirconiumconcentrations,providedspecimensizeisadjustedproportionately.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D600SpecificationforLiquidPaintDriersD1193SpecificationforReagentWaterE180PracticeforDeterminingthePrecisionofASTMMethodsforAnalysisandTestingofIndustrialandSpe-cialtyChemicals(Withdrawn2009)3E300PracticeforSamplingIndustrialChemicals3.SummaryofTestMethod3.1Thezirconiumdrierisdigestedwithconcentratedsul-furicacidand30%hydrogenperoxidetodestroyallorganicmatter.ThedilutedsolutionisboiledwithanexcessofEDTA,thepHadjusted,andtheexcesstitratedwithbismuthnitrateusingxylenolorangeastheindicator.4.SignificanceandUse4.1Theamountofzirco...
