Designation:D605−82(Reapproved2019)StandardSpecificationforMagnesiumSilicatePigment(Talc)1ThisstandardisissuedunderthefixeddesignationD605;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoverspigmentsthatconsistsubstan-tiallyofnaturalhydrousmagnesiumsilicate,andisrestrictedtothosemineralsthatconformtothechemicallimitsprescribedhereinandcanbesuitablyprocessedtowhatiscommerciallyknownaspaintpigmentquality.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thefollowinghazardcaveatappliestothetestmethodportionofthisspecificationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafety,health,andenvironmentalpracticesanddeterminetheapplicabilityofregulatorylimita-tionspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D280TestMethodsforHygroscopicMoisture(andOtherMatterVolatileUndertheTestConditions)inPigmentsD281TestMethodforOilAbsorptionofPigmentsbySpatulaRub-outD562TestMethodforConsistencyofPaintsMeasuringKrebsUnit(KU)ViscosityUsingaStormer-TypeViscom-eterD717TestMethodsforAnalysisofMagnesiumSilicatePigmentD1208TestMethodsforCommonPropertiesofCertainPigmentsD1210TestMethodforFinenessofDispersionofPigment-VehicleSystemsbyHegman-TypeGage3.CompositionandProperties3.1Thepigmentshallbemadebygrindingorotherwiseprocessingnatural,hydrousmagnesiumsilicateandshallconformtothefollowingrequirements:Weight%...
