Designation:D2375−05(Reapproved2011)StandardTestMethodforManganeseinPaintDriersbyEDTAMethod1ThisstandardisissuedunderthefixeddesignationD2375;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversatitrimetricdeterminationofmanganeseinliquidpaintdriersthatcanbedissolvedinatoluene-alcoholmixtureandutilizesthedisodiumsaltofethylenediaminetetraaceticaciddihydrate(EDTA).1.2Thistestmethodisnotapplicabletodrierblends.1.3AllcationsthatcanbetitratedwithEDTAinalkalinemediainterfereandmustnotbepresentinthesample.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D600SpecificationforLiquidPaintDriersD1193SpecificationforReagentWaterE180PracticeforDeterminingthePrecisionofASTMMethodsforAnalysisandTestingofIndustrialandSpe-cialtyChemicals(Withdrawn2009)3E300PracticeforSamplingIndustrialChemicals3.SummaryofTestMethod3.1TheliquiddrierisdissolvedintolueneandethylalcoholandtreatedwithanexcessofstandardEDTAsolution.TheexcessistitratedwithstandardzincchloridesolutionusingEriochromeBlack-Tastheindicator.4.SignificanceandUse4.1Theamountofmanganesedrierusedinoxidizing-typecoatingssignificantlyaffectstheirdryingproperties.Thistestmethodmaybeusedtoconfirmthestatedmanganesecontentofpureliquidmanganesedriersolubleintoluene-alcoholandmanufacturedforusebythecoatingsindustry.5.Apparatus5.1Centrifuge,capableofdeveloping1000to2000g.6.Reagents6.1PurityofReagents—Reagentgradechemicalsshallbeusedinalltests.Unlessotherwiseindicated,itisint...
