Designation:D2764−99(Reapproved2015)´1StandardTestMethodforDimethylformamide-Insoluble(DMF-I)ContentofTarandPitch1ThisstandardisissuedunderthefixeddesignationD2764;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—SIunitsformattingwascorrectededitoriallyinMay2015.1.Scope1.1Thistestmethodcoversthedeterminationofthedimethylformamide-insolublematter(DMF-I)intarandpitch.1.2Sincethistestmethodisempirical,strictadherencetoalldetailsoftheprocedureisnecessary.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecifichazardinformation,seeSections6and7.2.ReferencedDocuments2.1ASTMStandards:2D329SpecificationforAcetoneD370PracticeforDehydrationofOil-TypePreservativesD4072TestMethodforToluene-Insoluble(TI)ContentofTarandPitchD4296PracticeforSamplingPitchE11SpecificationforWovenWireTestSieveClothandTestSieves3.SummaryofTestMethod3.1AsampleisdigestedinhotDMFandfiltered.Anyinsolublematteriswashed,dried,andweighed.4.SignificanceandUse4.1Thistestmethodisusefulinevaluatingandcharacter-izingtarsandpitchesandasoneelementinestablishingtheuniformityofshipmentsorsourcesofsupply.Itisarapidandreasonablyaccuratemeasureofthetolueneinsoluble(TI)contentoftarandpitchTestMethodD4072.5.Apparatus5.1FilteringCrucible,porcelain,withfine-porositybottom,30mLto40mLcapacity,highform,maximumporediameter7µm.5.2FilterApparatus—Filterflaskandtubewithcrucibleadapter.5.3Sieves,U.S.Standard600µm(No.30)and250µm(No.60),c...
