Designation:D20−03(Reapproved2014)StandardTestMethodforDistillationofRoadTars1ThisstandardisissuedunderthefixeddesignationD20;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedistillationofroadtars.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E1SpecificationforASTMLiquid-in-GlassThermometers3.SummaryofTestMethod3.1A100-gsampleisdistilledatacontrolledratefroma300-mLflaskintotaredreceivers.Themassesofdistillatefractionsataseriesofspecifiedtemperaturesandofresidueatthemaximumspecifiedtemperaturearedetermined.Ifdesired,theresidueanddistillatesmaybeusedforfurthertesting.4.SignificanceandUse4.1Thedistillationtestseparatestarintofractionsaccordingtoaseriesofspecifiedtemperatures.5.Apparatus5.1Flask—Aside-armdistillationflask,asshowninFig.1,conformingtothefollowingdimensions:Diameterofbulb,outside,mm86.0±1.5Diameterofneck,inside,mm22.0±1.0Diameterofside-arm,inside,mm10.0±0.5Heightofflask,outside,mm131.0±1.5Verticaldistance,bottomofbulb,outside,tohorizontaltangentatside-arm,inside,mm93.0±1.5Lengthofside-arm,mm220±5Angleofside-arm,deg75±2Thicknessofside-armwall,mm1.0to1.55.2CondenserTube—Ataperedglasscondenser,asshowninFig.2andFig.3,havingthefollowingdimensions:Outsidediameterofsmallend,mm12.5±1.5Outsidediameteroflargeend,mm28.5±3.0Length,mm360±4Lengthofuniformlytaperedpart,mm100±55.3SourceofHeat—Aheatsourceconsisting...
