Designation:D5556−95(Reapproved2011)StandardTestMethodforDeterminationoftheMoistureandOtherVolatileMatterContainedinFatsandOilsUsedinFatLiquorsandSofteningCompounds1ThisstandardisissuedunderthefixeddesignationD5556;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofmoistureandothervolatilematerialunderconditionsofthetest.Itisapplicabletoallfatsandoils,includingemulsions.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.SignificanceandUse2.1Thistestmethodisintendedforuseinthedeterminationofthemoistureandothervolatilemattercontainedinfatsandoilsusedinthesofteningandstuffingofleather,aswellasthoseusedinthemanufactureofproductsforsuchpurpose.3.Apparatus3.1ElectricHotPlate,withceramictopanduniformheattransferacrossthesurface,chemicalandscratchresistant.3.2GlassBeakers,100to150mL,3.3Desiccator,containinganefficientdesiccant.4.Procedure4.1Accuratelyweigh5to20gofawellmixedsampleintoataredbeakerthathasbeenpreviouslydriedandcooledinadesiccator.Thenheatthesampleonthehotplate,rotatingthebeakergently,byhand,toavoidspatteringthatmayresultfromtoorapidebullitionofmoisture.4.2Judgetheapproachoftheend-pointbythecessationoftherisingbubblesofsteamaswellasbytheabsenceoffoam.Anothergoodmethodofjudgingtheend-pointistoplaceaclean,drywatchglassontopofthebeaker.Theevolutionofsteamisindicatedbycondensationonthewatchglass.Thetemperatureofthesampleshallatnotimebeallowedtoexceed130°C,exceptattheendoftest.4.3Whentheapparentend-pointhasbeenreached,hea...
