Designation:D5562−95(Reapproved2018)StandardTestMethodforDeterminationoftheAcidityasFreeFattyAcids/AcidNumberinthePresenceofAmmoniumorTriethanolamineSoaps1ThisstandardisissuedunderthefixeddesignationD5562;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversdeterminationoftheacidityasfreefattyacidsinthepresenceofammoniumortrietha-nolaminesoaps,orboth,existinginasampleofsulfonatedorsulfatedoil,orboth,bycalculationfromthetotalalkalinityandfree-and-alkalicombinedfattyacids.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D5350TestMethodforDeterminationofOrganicallyCom-binedSulfuricAnhydridebyTitration,TestMethodA3.SignificanceandUse3.1Thistestmethodisintendedforuseinthedeterminationoftheacidnumberofsulfonatedandsulfatedoilsforthepurposeofqualityassurance.4.Apparatus4.1Theapparatusrequiredconsistsofaglassflaskprovidedwithaglassstopperandanaircondenser.Theconnectionbetweentheflaskandthecondensershallbeagroundjoint.Perforatedglassbeadsshallbeusedtopreventbumping.4.1.1Flask—AnErlenmeyerflask(Fig.1)madeofaboro-silicateglass,havingacapacityofapproximately300mLandprovidedwithaglassstopper.4.1.2Condenser,consistingofaglasstube,915mm(36in.)inlengthand8mm(5⁄16in.)inouts...
