Designation:D3723−05(Reapproved2017)StandardTestMethodforPigmentContentofWater-EmulsionPaintsbyLow-TemperatureAshing1ThisstandardisissuedunderthefixeddesignationD3723;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversaprocedureforthepigmentcontentdeterminationofwater-basedpaints.Itisapplicableonlytopigmentsthatdonotdecomposeorloseweightattemperaturesbelow500°C.Suchpigmentsincludemostmetaloxides,silicates,andamajorityofanhydrousinorganicsalts.1.2Manywater-basedpaintscontainpigmentsandorganiccolorantsthatlosewaterofhydrationordecomposeatthistemperature.Theresidualashshouldbecarefullyinspectedforchangesincolorortexturethatcouldindicateapigmentalterationandhenceleadtoerroneousresults.Cautionshouldthereforebeexercisedwhenapplyingthistestmethodtosamplescontainingunknownpigmentcompositions.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWater3.SignificanceandUse3.1Thistestmethodisusedbypaintproducersandcon-sumersforproductprocesscontrolandforproductacceptance.4.Apparatus4.1Oven,forceddraft,maintainedat10562°C.4.2Furnace,muffle,maintainedat450625°C.4.3Syringe,5-mL.4.4AluminumFoilDis...
