ASTM E1194-2007 蒸气压的标准试验方法

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【英文标准名称】:StandardTestMethodforVaporPressure
【原文标准名称】:蒸气压的标准试验方法
【标准号】:ASTME1194-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E47.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:污染控制;测试;蒸气压力
【英文主题词】:gassaturationprocedure;isoteniscopeprocedure;vaporpressure;vaporpressuretemperaturecorrelation
【摘要】:Vaporpressurevaluescanbeusedtopredictvolatilizationrates(5).Vaporpressures,alongwithvapor-liquidpartitioncoefficients(Henryrsquo;Lawconstant)areusedtopredictvolatilizationratesfromliquidssuchaswater.Thesevaluesarethusparticularlyimportantforthepredictionofthetransportofachemicalintheenvironment(6).1.1Thistestmethoddescribesproceduresformeasuringthevaporpressureofpureliquidorsolidcompounds.Sincenosingletechniqueisavailabletomeasurevaporpressuresfrom1X10-11to100kPa(approximately10-10to760torr),twoproceduresarepresented.Anisoteniscope(standard)procedureformeasuringvaporpressuresofliquidsfrom1X10-1to100kPa(approximately1to760torr)isavailableinTestMethodD2879.Agas-saturationprocedureformeasuringvaporpressuresfrom1X10-11to1kPa(approximately10-10to10torr)ispresentedinthistestmethod.BothproceduresaresubjectsofU.S.EnvironmentalProtectionAgencyTestGuidelines.1.2Thesetwomethodswereselectedtoprovidedataatnormalenvironmentaltemperatures(10to60176;C).Atleastthreetemperaturevaluesshouldbestudiedtoallowdefinitionofavaporpressure-temperaturecorrelation.Valuesdeterminedshouldbebasedontemperatureselectionssuchthatameasurementismadeat25176;C(asrecommendedbyIUPAC)(1),avaluecanbeinterpolatedfor25176;C,oravaluecanbereliablyextrapolatedfor25176;C.Extrapolationto25176;Cshouldbeavoidedifthetemperaturerangetestedincludesavalueatwhichaphasechangeoccurs.Extrapolationto25176;Coverarangelargerthan10176;Cshouldalsobeavoided.Thetestmethodswereselectedbecauseoftheirextendedrange,simplicity,andgeneralapplicability(2).Examplesofresultsproducedbythegas-saturationprocedureduringaninterlaboratoryevaluationaregiveninTable1.ThesedatahavebeentakenfromReference(3).1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:17_100
【页数】:5P.;A4
【正文语种】: