Designation:D209−81(Reapproved2012)StandardSpecificationforLampblackPigment1ThisstandardisissuedunderthefixeddesignationD209;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thisspecificationcoversthepigmentcommerciallyknownaslampblack.Thepigmentmaybepurchasedinthedryformorasapasteinoil.2.ReferencedDocuments2.1ASTMStandards:2D185TestMethodsforCoarseParticlesinPigmentsD387TestMethodforColorandStrengthofChromaticPigmentswithaMechanicalMullerD1208TestMethodsforCommonPropertiesofCertainPigments3.CompositionandProperties3.1DryPigment—Thepigmentshallbemadebyburningoilsortarsinsuchamannerastoformadepositofcarbonorsoot.Itshallbehighgradeineveryrespectandshallbefreefromoil,greasymatter,andadmixtureofanyothersubstance.Thepigmentshallconformtothefollowingrequirements:Ash,max,%0.5Acetoneextract,max,%1.0Moistureandothervolatilematter,max,%3.0Coarseparticles,(totalresidueretainedona45-µm(No.325)sieve),max,%0.5Tonewhendilutedwithzincoxideclear-blue-gray3.2PasteinOil—Thepasteinoilshallbemadebythoroughlygrindingthespecifiedpigmentwithlinseedoil.Asreceiveditshallnotbecakedinthecontainer,andshallbreakupreadilyinoiltoformasmoothpaintofbrushingconsis-tency.Itshallmixreadilyinallproportions,withoutcurdling,withlinseedoil,turpentine,orvolatilepetroleumspirits,oranymixtureofthesesubstances.Thepasteshallconformtothefollowingrequirements:Pigment,min,%25Linseedoil,max,%75Moistureandothervolatilematter,max,%0.7Coarseparticlesandskins(totalresidueretainedona45-µm(No.325)sieve),max,%ofthedrypigment1.03.3Themasscolorandcharacterofthetintandthetintingstrengthformedbyamixturewithawhitepigmentshallbewithinmutuallyagreed-uponlimitsofastandardacceptabletoboththepurchaserandtheseller.4.Sampling4.1Twosamplesshallbe...
