Designation:D269−97(Reapproved2015)StandardTestMethodforInsolubleMatterinRosinandRosinDerivatives1ThisstandardisissuedunderthefixeddesignationD269;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThistestmethodcoversthedeterminationoftheamountofinsolublematterinrosinandrosinderivativesasdescribedinTerminologyD804.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D804TerminologyRelatingtoPineChemicals,IncludingTallOilandRelatedProductsE11SpecificationforWovenWireTestSieveClothandTestSieves3.SignificanceandUse3.1Rosin,particularlygumandwoodrosin,occasionallycontainssmallamountsofcontaminationsuchassand,dirtorbark.Rosinderivativesoccasionallycontaintracesofinsolublematerialasaresultoftherawmaterialsusedintheirproductionortheymaybegeneratedduringtheproductionprocess.Inallinstancesthepresenceofsuchinsolublematerialshouldbeminimal.Thistestmethoddescribesarapidandreliableprocedurefordeterminingtheamountofsuchinsolublematter.Itisbasedontheknowledgethatrosinandmostofitsderivativesaresolubleinnumerousorganicsolventswhereasmostcommoncontaminantsarenot.Itisespeciallyusefulforinternalqualitycontrolratherthansalesspecifications.4.Apparatus4.1Beaker,800mL.4.2MagneticStirringHotPlatewithPolytetrafluoroethyl-ene(PTFE)Stirbar,orhotplatewithmanualstirringrod.4.3PrecutStainlessSteelCircularScreen,325meshwith0.0014-in.wirediameter.(44-µmopenings)asdescribedinSpecificationE11.4.4Two-PieceFilterApparatus,appropriatetoholdthestainlesssteelsc...
