Designation:D7515−09(Reapproved2014)StandardTestMethodforPurityof1,3-Propanediol(GasChromatographicMethod)1ThisstandardisissuedunderthefixeddesignationD7515;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribesthegaschromatographicdeterminationofpurityfor1,3-propanediol(PDO).Thistestmethodwasoriginallydevelopedtodeterminethepurityof1,3-propanediolusedfortheapplicationasthefreezepointdepressantbasefluidinformulatedPDOenginecoolants.UseofthemethodforpurityofPDOforotherapplicationsmaybeviable.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3ReviewthecurrentMaterialSafetyDataSheets(MSDS)fordetailedinformationconcerningtoxicity,firstaidprocedures,andsafetyprecautions.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE300PracticeforSamplingIndustrialChemicalsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.SummaryofTestMethod3.1Theneatsampleisanalyzedbyatemperature-programmedgaschromatograph,equippedwithacapillarycolumnandflameionizationdetector(FID),andquantificationisperformedbydirectareanormalization.3.2Additionally,theuseofareferencesampleusingEthylene,PropyleneorDipropyleneGlycol(EG,PGorDPG)in1,3-PDO(minimumpurity99.5%)shouldbeusedasaperformancecheck(seeSection8).NOTE1—Theapplicationofthisreferencesampleisalsousedtodemonstratetheseparationofcommonlyusedglycols(EG,PGandDPG)inenginecoolants,fromPDO.SolutionsofEG,PG,orDPGinconcentrationsof0.1tonotmoretha...
