Designation:D1649−01(Reapproved2012)StandardSpecificationforStrontiumChromatePigment1ThisstandardisissuedunderthefixeddesignationD1649;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversthepigmentcommerciallyknownasstrontiumchromatewhichissuitableforuseinthemanufactureofprotectiveordecorativecoatings.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.2.ReferencedDocuments2.1ASTMStandards:2D387TestMethodforColorandStrengthofChromaticPigmentswithaMechanicalMullerD1208TestMethodsforCommonPropertiesofCertainPigmentsD1845TestMethodsforChemicalAnalysisofStrontiumChromatePigment3.CompositionandProperties3.1DryPigment—Thepigmentshallbecommerciallypurestrontiumchromate-freeofextendersandorganicmaterial,exceptformaterialsintroducedtoimprovethosepropertiesforwhichthepigmentisused.Thepigmentshallconformtothefollowingrequirements:percentStrontiumasSrO,min48ChromiumasCrO3,min47ChlorideasCl,max0.1SulfateasSO3,max0.2Watercontent,max0.2Coarseparticles(totalresidueretainedonNo.325(45-µm)sieve),max1.03.2ThemasscolorandcharacterofthetintandtintingstrengthformedbyamixturewithawhitepigmentshallbewithinmutuallyagreeduponlimitsofastandardacceptabletoboththepurchaserandthesellerwhentestedinaccordancewithTestMethodD387.4.Sampling4.1Twosamplesshallbetakenatrandomfromdifferentpackagesfromeachlot,batch,day’spack,orotherunitofproductioninashipment.Whennomarkingsdistinguishingbetweenunitsofproductionappear,samplesshallbetakenfromdifferentpackagesintheratiooftwosamplesforeach4540kgor10000lb,exceptthatforshipmentsoflessthan10000lb,twosamplesshallbetaken.Attheoptionofthepurchaser,thesamplesmaybetestedseparatelyorafterblendinginequalquantitiesthesamplesfromthesameproductionunittoformacompositesample.5.Test...
