Designation:D6422–99AnAmericanNationalStandardStandardTestMethodforWaterTolerance(PhaseSeparation)ofGasoline-AlcoholBlends1ThisstandardisissuedunderthefixeddesignationD6422;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheabilityofgasoline-alcoholblendstoretainwaterinsolutionorinastablesuspensionatthelowesttemperaturetowhichtheyarelikelytobestoredorexposedinuse.1.2Thistestmethodisintendedtomeasurethetemperatureatwhichagasoline-alcoholblendseparatesintotwodistinctphasesinaccordancewiththecriteriadefinedinthistestmethod.Samplesthatformahazeareconsiderednottohavephaseseparated.1.3Thistestmethodisapplicabletogasoline-alcoholblendsforuseasfuelsinspark-ignitionenginesthatcontainsaturatedC1toC4alcoholsonly.Thetestmethoddoesnotapplytofuelsthatcontainanalcoholastheprimarycomponent,suchasM85orEd85,ortogasoline-etherblends.1.4ThevaluesstatedinSIunitsarethestandard,exceptwhenotherunitsarespecifiedbyfederalregulation.Valuesgiveninparenthesisareprovidedforinformationalpurposes.1.5Thisstandardmayinvolvehazardousmaterials,opera-tions,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthestandardtoestablishappropriatesafetyandhealthpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:D2500TestMethodforCloudPointofPetroleumProd-ucts2D4057PracticeforManualSamplingofPetroleumandPetroleumProducts3D4306PracticeforAviationFuelSampleContainersforTestsAffectedbyTraceContamination3D4814SpecificationforAutomotiveSpark-IgnitionEngineFuel3D5842PracticeforSamplingandHandlingofFuelsforVolatilityMeasurement4E1SpecificationforASTMThermometers53.Terminology3.1Definitions:3.1.1gasoline,n—avolatilemixtureofliquidhydrocar-bons,g...
