Designation:F766/F766M−82(Reapproved2010)´1StandardTestMethodforMeltingPointofWaxes1ThisstandardisissuedunderthefixeddesignationF766/F766M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—UnitsinformationwaseditoriallyrevisedinDecember2010.1.Scope1.1Thistestmethodcoversthedeterminationoftheinitialandfinalmeltingpointsandrecoverypointofwaxesusingahotstageandmicroscope.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.SeeSection8foraspecificprecautionarystatement.2.ReferencedDocuments2.1ASTMStandards:2E105PracticeforProbabilitySamplingofMaterialsE122PracticeforCalculatingSampleSizetoEstimate,WithSpecifiedPrecision,theAverageforaCharacteristicofaLotorProcess3.DescriptionsofTermsSpecifictoThisStandard3.1finalmeltingpoint—thetemperatureindegreescelsiusobservedonthehot-stagethermometeratthetimethewaxiscompletelymeltedintodroplets.3.2initialmeltingpoint—thetemperatureindegreescelsiusobservedonthehot-stagethermometeratthetimethefirstmovementisnotedinthewax.3.3recoverypoint—thetemperatureindegreescelsiusob-servedonthehot-stagethermometeratthetimethefirstcrystalisobservedforminginthemeltedwaxduringcooling.4.SummaryofTestMethod4.1Afewshavingsorgranulesfromrepresentativewaxsampleareplacedonamicroscopeslideandcoveredwithacoverglass.Theslideassemblyissetuponthehotstagewiththemicroscopelightedandfocusedforbest...
