Designation:D5562−95(Reapproved2011)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-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.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.)inoutsidediameter.ThelowerendofthetubeshallbeflaredandgroundtofitthemouthoftheErlenmeyerflask.4.1.3GlassBeads—Perforatedglassbeads,madeofchemi-callyresistantglass,approximately4mm(5⁄32in.)indiameter.Beforeusing,theglassbeadsshallbeboiledthoroughlyinseveralportionsofwateroruntilthewashwaterreactsneutralt...
