ASTMD300840a0759510OObb85s2-#TbDesignation:D3008-90StandardTestMethodResinAcidsinRosinAMERICANSOCIETYFORTESTINGAN0MATERIALS1916RaceSI..Phlladalph~a.Pa19103RaPrintadfromthaAnnualBookdASTMStandards.CopyrightASTMIfnotlistedinthacurrantcombirwtdindax,willappearinthanextadiikn.forbyGas-LiquidChromatography’ThisstandardisissuedunderthefixeddesignationD3008;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asupcrsctiptepsilon(c)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftheresinacidsintalloil,gum,orwoodrosinafterconversiontotheirmethylesters.1.2Thecompositioniscalculatedfromtheratioofeachpeakareatothetotalareaofallpeaksobtained.Rosinsgenerallycontainnonvolatileorpolymericmaterialsforwhichnopeaksareobtainedundertheconditionsused.Ontheotherhand,volatileneutralmaterialseluteinthegeneralregionofresinacidmethylestersandcanresultinerrorsinthecalculatedcomposition.Morereliabledataisobtainedbyremovalofneutralmaterialsbeforegaschromatography.21.3Thisstandarddoesnotpurporttoaddressallofthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardsaregiveninNote2.2.ReferencedDocuments2.1ASTMStandards:D1193SpecificationforReagentWat$D3257TestMethodforAromaticsinMineralSpiritsby‘GasChromatography3-E260PracticeforPackedColumnChromatography43.SummaryofTestMethod.3.1Aportionofthesampleispreparedbyeithercon-vertingittothetetramethylammoniumsaltsoresterifyingitwithdiazomethane.Aspecimenofthepreparedsampleisinjectedintoa275°Cinjectionporttoa200°Ccolumnofethyleneglycolsuccinatesiliconecopolymer(EGSS-X)ordiethyleneglycolsuccinateonsilanizeddiatomaceousearthsolidsupport.Ifaddedasthetetramethylammoniumsalt,thesampleispyrolyzedtothemethylester.Thepyrolyzedestersor...
