Designation:D476−15(Reapproved2021)StandardClassificationforDryPigmentaryTitaniumDioxideProducts1ThisstandardisissuedunderthefixeddesignationD476;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thisclassificationdescribeseighttypesofdrypigmen-tarytitaniumdioxideproducts,groupedbycomposition,typi-calenduseapplication,andsomeperformanceproperties.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D34GuideforChemicalAnalysisofWhitePigmentsD153TestMethodsforSpecificGravityofPigmentsD185TestMethodsforCoarseParticlesinPigmentsD280TestMethodsforHygroscopicMoisture(andOtherMatterVolatileUndertheTestConditions)inPigmentsD1394TestMethodsforChemicalAnalysisofWhiteTita-niumPigmentsD2448TestMethodforWater-SolubleSaltsinPigmentsbyMeasuringtheSpecificResistanceoftheLeachateofthePigmentD3720TestMethodforRatioofAnatasetoRutileinTitaniumDioxidePigmentsbyX-RayDiffraction3.SignificanceandUse3.1Thisclassificationisgivenasanaidindeterminingthefitnessforuseofatitaniumdioxidepigmentforacoatingapplication.Itislimitedtodry,hidingpigments.Itexcludespigmentdispersions,andnon-hidingspecialtytitaniumdioxideproducts.4.BasisforClassification4.1Titaniumdioxidepigmentscandifferinmanyways,includingcompositionandperformance.Thisclassificationoutlinesdifferencesbetweenpigmenttypesthatshouldbeconsideredwhenselectingaproductforacoatingapplicatio...
