Designation:D284–88(Reapproved1999)StandardTestMethodsforChemicalAnalysisofMercuricOxidePigment1ThisstandardisissuedunderthefixeddesignationD284;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverproceduresforthechemicalanalysisofmercuricoxidepigment.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.AspecifichazardstatementisgivenintheNote1of11.1.2.ReferencedDocuments2.1ASTMStandards:D1193SpecificationforReagentWater2D1208TestMethodsforCommonPropertiesofCertainPigments33.SignificanceandUse3.1Thesetestmethodsareintendedasaquickandreliableprocedureformeasuringpurityofmercuricoxidepigmenttodetermineifitmeetspuritystandardsasagreeduponbetweentheproducerandtheconsumer.4.PurityofReagentsandMaterials4.1Reagentgradechemicalsshallbeusedinalltests.Unlessotherwiseindicated,itisintendedthatallreagentsshallconformtothespecificationsoftheCommitteeonAnalyticalReagentsoftheAmericanChemicalSociety,wheresuchspecificationsareavailable.4Othergradesmaybeused,pro-videditisfirstascertainedthatthereagentisofsufficientlyhighpuritytopermititsusewithoutlesseningtheaccuracyofthedetermination.4.2Unlessotherwiseindicated,referencestowatershallbeunderstoodtomeanreagentwaterconformingtoTypeIIofSpecificationD1193.5.PreparationofSample5.1Ifthesampleislarge,mixitthoroughlybeforetakingarepresentativeportion.Grindtherepresentativeportiontoafinepowderandthoroughlymixbeforetakingportionsforanalysis.Keepthesampleinastopperedglassbottle.6.Precision6.1Repeatabilityandreproducibilityarebelievedtobewellwithinthelimitsusuallyobtainedonsimilarchemicaltestmethods,butnoactualfiguresonpreci...
