Designation:D3988−05(Reapproved2011)StandardTestMethodforVanadiuminPaintDriersbyEDTAMethod1ThisstandardisissuedunderthefixeddesignationD3988;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthetitrimetricdeterminationofvanadiuminliquidvanadiumdriersandutilizesthedisodiumsaltofethylenediaminetetraaceticaciddihydrate(EDTA).1.2Thistestmethodislimitedtothedeterminationofthevanadiumcontentofaliquidvanadiumdrierthatdoesnotcontainotherdrierelements.Thistestmethodisnotapplicabletodrierblends.1.3AllcationsthatcanbetitratedwithEDTAinalkalinemediainterfereandmustnotbepresentinthesample.1.4Thistestmethodhasbeentestedforconcentrationsof3and4%vanadium,butthereisnoreasontobelievethatitisnotsuitableforhigherorlowervanadiumconcentrationsprovidedspecimensizeisadjustedproportionately.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D600SpecificationforLiquidPaintDriersD1193SpecificationforReagentWaterE180PracticeforDeterminingthePrecisionofASTMMethodsforAnalysisandTestingofIndustrialandSpe-cialtyChemicals(Withdrawn2009)3E300PracticeforSamplingIndustrialChemicals3.SummaryofTestMethod3.1Theamountofvanadiumdrierusedinoxidizing-typecoatingssignificantlyaffectstheirdryingproperties.Thevana-diumdrierisacidifiedandheatedtomakethevanadiumavailableforchelationwithEDTA.Itisthenchelated,thepHadjusted,andtheexcesstitratedwithzincchloridesolution,usingEriochromeBlackTastheindicator.4.SignificanceandUse4.1Thistestmethodmaybeusedto...
