Designation:D246–04aAmericanAssociationStateHighwayTransportationOfficialsStandardAASHTONo.T62StandardTestMethodforDistillationofCreosoteandCreosote-CoalTarSolutions1ThisstandardisissuedunderthefixeddesignationD246;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversaprocedureforthedistillationofcreosoteandcreosote-coaltarsolution.TestMethodsD38coversthesamplingofwoodpreservativespriortotesting.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D38TestMethodsforSamplingWoodPreservativesPriortoTestingD370PracticeforDehydrationofOil-TypePreservativesD390SpecificationforCoal-TarCreosoteforthePreserva-tiveTreatmentofPiles,Poles,andTimbersforMarine,Land,andFreshwaterUseD391SpecificationforCreosote-CoalTarSolutionE1SpecificationforASTMLiquid-in-GlassThermometersE1404SpecificationforLaboratoryGlassConicalFlasksE1405SpecificationforLaboratoryGlassDistillationFlasks3.SummaryofTestMethod3.1A100-gsampleisdistilledatacontrolledrateina300-mLflask.Theweightsofdistillatefractionsataseriesofspecifiedtemperaturesandofresidueatthemaximumspecifiedtemperaturearedetermined.Theresidueanddistillatesshallbetestedbyappropriateprocedureswhenrequiredbythespeci-fier.4.SignificanceandUse4.1Creosotequalityisdefinedbytheboilingrangesofitsdistillationfractions.TheboilinglimitsofthefractionsasdeterminedbythistestmethodmustconformtothelimitsestablishedbySpecificationsD390andD391toqualifythecreosoteasanacceptablepreservativeforitsintendedappli-cation.5.Apparatus5.1Flask—Distillationflask,300mL,specifiedasTypeII,Class2inSpecificationE1405.5....
