【英文标准名称】:TestMethodforVaporPressureofPetroleumProducts(Mini-Method-Atmospheric)
【原文标准名称】:石油产品蒸气压力的试验方法(大气的小型法)
【标准号】:ANSI/ASTMD5482-2007
【标准状态】:作废
【国别】:美国
【发布日期】:2007
【实施或试行日期】:2007-11-27
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:大气的;烃类;石油产品;测试;蒸气压力
【英文主题词】:Atmospheric;Hydrocarbons;Petroleumproducts;Testing;Vapourpressure
【摘要】:Thistestmethodcoversaprocedureforthedeterminationoftotalvaporpressureofpetroleumproductsusingautomaticvaporpressureinstruments.Thetestmethodissuitablefortestingsampleswithboilingpointsabove0?C(32?F)thatexertavaporpressurebetween7and110kPa(1.0and16psi)at37.8?C(100?F)atavapor-to-liquidratioof4:1.Thetestmethodisapplicabletogasolinescontainingoxygenates.Noaccountismadeofdissolvedwaterinthesample.Note1-Becausetheexternalatmosphericpressuredoesnotinfluencetheresultantvaporpressure,thisvaporpressureisanabsolutepressureat37.8?C(100?F)inkPa(psi).Thisvaporpressurediffersfromthetruevaporpressureofthesampleduetosomesmallvaporizationofthesampleanddissolvedairintotheairoftheconfinedspace.Somegasoline-oxygenateblendsmayshowahazewhencooledto0to1?C.Ifahazeisobservedin8.5,itshallbeindicatedinthereportingofresults.Theprecisionandbiasstatementsforhazysampleshavenotbeendetermined(seeNote6).ThistestmethodisamodificationofTestMethodD5191(MiniMethod)inwhichthetestchamberisatatmosphericpressurepriortosampleinjection.Thistestmethodcoverstheuseofautomatedvaporpressureinstrumentsthatperformmeasurementsonliquidsamplesizesintherangefrom1to10mL.Thistestmethodissuitableforthedeterminationofthedryvaporpressureequivalent(DVPE)ofgasolineandgasoline-oxygenateblendsbymeansofacorrelationequation(see13.2).ThecalculatedDVPEisconsideredequivalenttotheresultobtainedonthesamematerialwhentestedbyTestMethodD4953.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(Forspecificwarningstatements,see7.2through7.7.)
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:
【正文语种】:英语