Designation:D4527−99(Reapproved2011)StandardTestMethodforCarbonBlack—SolventExtractables1ThisstandardisissuedunderthefixeddesignationD4527;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheprocedureformeasuringcarbonblacksolventextractables.1.1.1Thistestmethoddeterminesthetotalmaterialex-tractedfromcarbonblackbytolueneunderspecifiedcondi-tions.Theprocedureisalsoapplicabletoothersolventssuchascyclohexane,etc.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Foraspecificprecautionarystatement,seeSection7.2.ReferencedDocuments2.1ASTMStandards:2D3051PracticeforCarbonBlack—StatingthePrecisionofASTMTestMethods(Withdrawn1990)3D3396PracticeforCarbonBlack—MeasuringthePrecisionofASTMTestMethods(Withdrawn1990)33.SummaryofTestMethod3.1Aspecimenofcarbonblackisextractedfor48h(orotherspecifiedtime)inaSoxhletextractor,thesolventre-movedbycontrolledtemperatureevaporation,andtheex-tractedresiduedeterminedgravimetrically.Ifthecarbonblackextractablesaretobesubjectedtoadditionalanalysis,seeSection7.4.SignificanceandUse4.1Thecarbonblackextracttestprocedureprovidesauniformandprecisemethodforthegravimetricdeterminationoforganic-solventextractablesoncarbonblack.Accuracyandprecisionareacceptableformostspecificationorregulatorypurposes,orboth.However,carbonblackwithverylowextract(lessthan0.02%)mayrequireamorerigorousextractionprocedure.Theactualchemicalcompositionoftheextractcanvarysignificantlywiththetypeandoriginofthecarbonblack.5.Apparatus5.1SoxhletExtracti...
