Designation:D81−87(Reapproved2014)StandardSpecificationforBasicCarbonateWhiteLeadPigment1ThisstandardisissuedunderthefixeddesignationD81;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversthematerialcommerciallyknownasbasiccarbonatewhitelead,usedasapigmentandinputty.Thepigmentmaybepurchasedinthedryformorasapasteinoil.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.2.ReferencedDocuments2.1ASTMStandards:2D185TestMethodsforCoarseParticlesinPigmentsD280TestMethodsforHygroscopicMoisture(andOtherMatterVolatileUndertheTestConditions)inPigmentsD1208TestMethodsforCommonPropertiesofCertainPigmentsD1301TestMethodsforChemicalAnalysisofWhiteLeadPigments3.CompositionandProperties3.1DryPigment—Thepigmentshallbefreeofadulterantsandshallcontainnotmorethantracesofimpuritiesincidenttowell-controlledmanufactureofhigh-gradebasiccarbonatewhitelead.Thepigmentshallconformtothefollowingrequirements:Leadcarbonate,%62to75Moistureandothervolatilematter,max,%0.7Totalotherimpurities,max,%1.0Coarseparticles(totalresidueretainedonaNo.325(45-µm)sieve),max,%1.03.2PasteinOil—Thepasteshallbemadebythoroughlygrindingthespecifiedpigmentwithlinseedoil.Thepasteshallnotbecakedinthecontainerandshallbreakupreadilyinoiltoformasmoothpaintofbrushingconsistency.Thepasteshallconformtothefollowingrequirements:Pigment,min,%89Linseedoil,max,%11Moistureandothervolatilematter,max,%0.7Coarseparticlesandskins(totalresidueretainedonaNo.325(45-µm)sieve),max,%ofthedrypigment1.53.3SemipasteContainingVolatileThinner—Thesemipasteshallbemadebythoroughlygrindingthespecifiedpigmentwithamixtureoflinseedoilandasmallamountofvolatilethinner.Thesemipasteshal...
