Designation:D2959−95(Reapproved2009)StandardTestMethodforEthyleneOxideContentofPolyethoxylatedNonionicSurfactants1ThisstandardisissuedunderthefixeddesignationD2959;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofethyleneoxideinpolyethoxylatednonionicsurfactants.Itcanalsobeusedforcompoundscontainingpropyleneoxideoranycom-pounds(glycolsandglycolandpolyglycolethersandesters)whichformunstable1,2-diiodidesonreactionwithhydriodicacid.NOTE1—Compoundsinwhichtheoxyalkylenegroupisconnectedtoanitrogencannotbeentirelydecomposed.Thiscanbeusedtodeterminethepercentofanethoxylatedsurfactantinamixture,iftheethyleneoxidecontentoftheethoxylatedsurfactantisknown.NOTE2—Thismethodreportsresultsaspercentethyleneoxide.Ifthismethodisappliedtounknowncompoundsorcompositions,theanalystshouldbeawareofthepossiblepresenceofmaterialotherthanethyleneoxide.NOTE3—ForuseonbuiltsyndetcompositionstheorganicactiveingredientmustbeisolatedinaccordancewithTestMethodD2358.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.MaterialSafetyDataSheetsareavailableforreagentsandmaterials.Reviewthemforhazardspriortousage.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterD2358TestMethodforSeparationofActiveIngredientfromSurfactantandSyndetCompositions3.SummaryofTestMethod3.1Bycleavingnonionicsurfactantscontainingpolyethyl-eneoxidechainswithhydriodicacid,theunstable1,2-diiodoethaneisformed.Thisvicinaldiiodidedecomposestoformethyleneandiodine.3.2The...
