Designation:E1782−14StandardTestMethodforDeterminingVaporPressurebyThermalAnalysis1ThisstandardisissuedunderthefixeddesignationE1782;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribesaprocedureforthedetermi-nationofthevaporpressureofpureliquidsormeltsfromboilingpointmeasurementsmadeusingdifferentialthermalanalysis(DTA)ordifferentialscanningcalorimetry(DSC)instrumentationoperatedatdifferentappliedpressures.1.2Thistestmethodmaybeusedforthetemperaturerange273to773K(0to500°C)andforpressuresbetween0.2kPato2MPa.Theserangesmaydifferdependingupontheinstrumentationusedandthethermalstabilityofmaterialstested.Becausearangeofappliedpressuresisrequiredbythistestmethod,theanalystisbestservedbyuseofinstrumenta-tionreferredtoashighpressuredifferentialthermalinstrumen-tation(HPDSCorHPDTA).1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.(SeealsoIEEE/ASTMSI10.)1.4ThereisnoISOstandardequivalenttothistestmethod.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE473TerminologyRelatingtoThermalAnalysisandRhe-ologyE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethodE967TestMethodforTemperatureCalibrationofDifferen-tialScanningCalorimetersandDifferentialThermalAna-lyzersE1142TerminologyRelatingtoThermophysicalPropertiesE2071PracticeforCalculatingHeatofVaporizationorSublimationfromVaporPressureDataIEEE/ASTMSI10StandardforUseoftheInternationalSystemofUnits(SI)TheModernMetricSystem...
