Designation:D457–85(Reapproved1997)StandardSpecificationforModifiedSoda(SesquicarbonateType)1ThisstandardisissuedunderthefixeddesignationD457;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversmaterialsuitableforvariouswashing,cleaning,andscouringprocesses,withorwithoutsoapasconditionsdemand,andwhereamildlyalkalinematerialisdesired.1.2Thismaterialmaybehazardousifnotproperlyman-aged.1.3Precautionaryinformationforthesafeuse,storageanddisposalofthismaterialshouldbepreliminarilyobtainedfromsuppliersandothers.1.4Incaseofpersonalaccidentwiththismaterial,applyappropriatefirstaid,telephonethenearestPoisonControlCenterforassistance,andgetmedicalattentionimmediately.2.ReferencedDocuments2.1ASTMStandards:D501TestMethodsofSamplingandChemicalAnalysisofAlkalineDetergents23.Terminology3.1DefinitionofTermSpecifictoThisStandard:3.1.1Modifiedsoda(sesquicarbonatetype)shallbeawhite,uniformpowderorcrystal,asspecifiedbythepurchaser,composedofsodiumcarbonateandsodiumbicarbonate.NOTE1—Thisproductiscommonlyknownaslaundrysoda.4.OrderingInformation4.1Modifiedsoda(sesquicarbonatetype)shallbepurchasedbynetweight.5.ChemicalComposition5.1Modifiedsoda(sesquicarbonatetype),asreceived,shallconformtotherequirementsastochemicalcompositionprescribedinTable1.6.SamplingandAnalysis6.1Thematerialshallbesampledandanalyzedinaccor-dancewithTestMethodsD501.1ThisspecificationisunderthejurisdictionofASTMCommitteeD-12onSoapsandOtherDetergentsandisthedirectresponsibilityofSubcommitteeD12.14onSpecificationsforAnalysisofInorganicAlkalineDetergents.CurrenteditionapprovedMay31,1985.PublishedJuly1985.OriginallypublishedasD457–37.LastpreviouseditionD457–39(1980).2AnnualBookofASTMStandards,Vol15.04.1Copyright©ASTM,100BarrHarborDrive,WestConshohocken,PA19428-2959,UnitedStates.NOTI...
