Designation:D928−03(Reapproved2017)StandardSpecificationforSodiumBicarbonate1ThisstandardisissuedunderthefixeddesignationD928;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversmaterialsuitableforuseinvariouswashing,cleaning,andscouringprocesses,withorwithoutsoapasconditionsdemand,andwhereamildlyalkalinematerialisdesired.(Warning—Thismaterialmaybehazardousifnotproperlymanaged.Precautionaryinformationforthesafeuse,storage,anddisposalofthismaterialshouldbepreliminarilyobtainedfromsuppliersandothers.Incaseofpersonalaccidentwiththismaterial,applyappropriatefirstaid;telephonenearestPoisonControlCenterforassistance,andgetmedicalattentionimmediately.)2.ReferencedDocuments2.1ASTMStandards:2D501TestMethodsofSamplingandChemicalAnalysisofAlkalineDetergents3.OrderingInformation3.1Sodiumbicarbonateshallbepurchasedbynetweight.4.ChemicalComposition4.1Sodiumbicarbonate(NaHCO3)asreceivedshallcon-formtothefollowingrequirementsastochemicalcomposi-tion:Na2CO3,max,%0.4NaHCO3,min,%99.6Matterinsolubleinwater,max,%0.15.OtherRequirements5.1Sodiumbicarbonateshallbeawhite,uniformpowder.Anycakingshallbecapableofbeingreadilydisintegrated.6.MethodsofSamplingandAnalysis6.1Thematerialshallbesampledandanalyzedinaccor-dancewithTestMethodsD501.ASTMInternationaltakesnopositionrespectingthevalidityofanypatentrightsassertedinconnectionwithanyitemmentionedinthisstandard.Usersofthisstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,areentirelytheirownresponsibility.Thisstandardissubjecttorevisionatanytimebytheresponsibletechnicalcommitteeandmustbereviewedeveryfiveyearsandifnotrevised,eitherreapprovedorwithdrawn.Yourcommentsareinvitedeitherforrevisionofthisstandardorforadditionalstandardsandshouldbeaddr...
