Designation:D1107−96(Reapproved2013)TechnicalAssociationofPulpandPaperIndustryStandardMethodT204os-76StandardTestMethodforEthanol-TolueneSolubilityofWood1ThisstandardisissuedunderthefixeddesignationD1107;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftheethanol-toluenesolublecontentofwood,whichisameasureofthewaxes,fats,resins,andoils,plustanninsandcertainotherether-insolublecomponents.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoconsultandestablishappropriatesafetyandhealthpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Specificprecautionarystatementsaregivenin4.1.2.SignificanceandUse2.1Theethanol-tolueneextractofwoodconsistsofthesolublematerialsnotgenerallyconsideredpartofthewoodpolymericstructure.Theyareprimarilythewaxes,fats,resins,andsomegums,aswellassomewater-solublesubstances.Theamountsareinfluencedbyseasoninganddrying.3.Apparatus3.1FilteringCrucibles,Alundumorfritted-glassfilteringcruciblesofcoarseporosity.3.2ExtractionApparatus—AcompactformofSoxhletex-tractionapparatus,withground-glassjoints,ispreferable.Theapparatusshallconsistofthefollowingitems:3.2.1SoxhletExtractionFlask,havingacapacityof250mL.3.2.2SoxhletExtractionTube,45to50mmininsidediameter,havingacapacitytothetopofthesiphonofapproximately100mLandasiphontubeapproximately55mminheight.Extractiontubesofthesedimensionssiphonmorerapidlythanextractorswithhighersiphontubes.3.2.3Condenser,oftheHopkinsinner-cooledtype.4.Reagent4.1Ethanol-TolueneSolution—Mix1.0Labsoluteethanoland427mLtoluene.(Warning—Avoidinhalationofvaporsandcontactwithskin.)5.TestSpecimen5.1Thetestspecimenshallconsistof2gofair-driedsawdustthathasbeengroundtopassa425-µm(...
