Designation:D456–85(Reapproved1997)StandardSpecificationforCausticSoda(Anhydrous)1ThisstandardisissuedunderthefixeddesignationD456;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversmaterialsuitableforvariouswashing,cleaning,andscouringprocesses,withorwithoutsoapasconditionsdemand,andwhereastronglyalkalinematerialisdesired.1.2Thismaterialmaybehazardousifnotproperlyman-aged.1.3Precautionaryinformationforthesafeuse,storage,anddisposalofthismaterialshouldbepreliminarilyobtainedfromsuppliersandothers.1.4Incaseofpersonalaccidentwiththismaterial,applyappropriatefirstaid;telephonethenearestPoisonControlCenterforassistance,andgetmedicalattentionimmediately.2.ReferencedDocuments2.1ASTMStandards:D501TestMethodsofSamplingandChemicalAnalysisofAlkalineDetergents23.OrderingInformation3.1Causticsoda(anhydrous)shallbepurchasedbynetweight.4.ChemicalComposition4.1Causticsoda(anhydrous),asreceived,shallconformtothefollowingrequirementsastochemicalcomposition:TotalalkalinityasNa2O,min,%75.5Sodiumhydroxide(NaOH),min,%96CarbonateasNa2CO3,max,%25.GeneralRequirements5.1Causticsoda(anhydrous)shallbefurnishedinair-tightcontainersinflake,coarselypowdered,orsolidformasspecifiedbythepurchaser.6.SamplingandAnalysis6.1Thematerialshallbesampledandanalyzedinaccor-dancewithTestMethodsD501.7.PackagingandLabeling7.1Thematerialshallbepackagedandlabeledinconfor-mitywithlocal,state,andFederalrequirements.TheAmericanSocietyforTestingandMaterialstakesnopositionrespectingthevalidityofanypatentrightsassertedinconnectionwithanyitemmentionedinthisstandard.Usersofthisstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,areentirelytheirownresponsibility.Thisstandardissubjecttorevisionatanytimebytheresponsibletech...
