Designation:D6805−02(Reapproved2016)StandardPracticeforInfrared(IR)ProcedureforDeterminationofAromatic/AliphaticRatioofBituminousEmulsions1ThisstandardisissuedunderthefixeddesignationD6805;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeusesinfraredanalyticaltechniquestoqualitativelydetermineinthelaboratoryaratioofaromaticabsorbancetoaliphaticabsorbance.Thispracticemaybeusedtodetermineifthebitumenintheemulsionispredominantlyaromaticoraliphaticinnature.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D2939TestMethodsforEmulsifiedBitumensUsedasProtectiveCoatings(Withdrawn2012)33.Terminology3.1Definitions:3.1.1aliphatic—agroupoforganiccompoundscharacter-izedbystraight-orbranched-chainarrangementsofthecon-stituentcarbonatoms.Examplesofaliphaticcompoundsin-cludeparaffins(alkanes),olefins(alkenes),andacetylenes(alkynes).Thesecompoundsareprimarilyfoundinpetroleumsources.Hawley’sCondensedChemicalDictionary43.1.2aromatic—agroupoforganiccompoundsmadeupofunsaturatedcyclichydrocarbonscontainingoneormorerings,anexampleofwhichisbenzene.Largenumbersofthesecompoundsarederivedfrompetroleumandcoaltar,andareclassifiedas“aromatics”becauseoftheirstrongandnotunpleasantodorcharacteristics.Hawley’sCondensedChemicalDictionary43.1.3infraredabsorbance—therangeofwavelengthsintheinfraredthatareabsorbedbyaspecimenandidentifyitsmolecularcomponentsandcompoundstructures.Theinfraredregionoftheelectromagneticspectrumincludeswavelengt...
