Designation:C400−98(Reapproved2013)´1StandardTestMethodsforQuicklimeandHydratedLimeforNeutralizationofWasteAcid1ThisstandardisissuedunderthefixeddesignationC400;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Correctederroneousreferencesin7.4.2.1and7.4.3.1inDecember2017.1.Scope1.1Thistestmethodcoversthetestingofquicklimeandhydratedlimeforuseinthetreatmentofwasteacidsolutionsandincludesthecharacterizationofthelimingmaterialandoftheacidwaste.NOTE1—Whenagreeduponbythemanufacturerandthepurchaser,thismethodmaybeuseddirectlytoevaluatethelimerequirementforaplantwasteacidandinthepreparationofthelimeslurry;thepH,thetime,temperature,andotherconditionsoftreatmentmaybeadjustedtoconformtoplantpractice.Otherwisethetestshallbeperformedasdescribedinthismethod.NOTE2—Undersomeconditionsoftestthelimerequirementmayvarysubstantiallyfromthatindicatedbyultimatechemicalanalysisorbytheuseofadeterminationofavailablealkalinitybytitrationtoastoichio-metricendpoint.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.3Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2C50PracticeforSampling,SamplePreparation,Packaging,andMarkingofLimeandLimestoneProductsE70TestMethodforpHofAqueousSolutionsWiththeGlassElectrode3.Terminology3.1Definitions:3.1.1neutralizationcoeffıcient—thenumberofpartsoflimerequiredtoneutra...
