【英文标准名称】:StandardTestMethodforAnalysisofToluenebyCapillaryColumnGasChromatography
【原文标准名称】:毛细管柱气象色谱法分析甲苯的标准试验方法
【标准号】:ASTMD6526-2003e1
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:D16.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:杂质;试验方法;气相色谱法;苯;甲苯
【英文主题词】:benzene;gaschromatography;impurities;1,4-dioxane;toluenepurity
【摘要】:Thistestmethodissuitablefordeterminingtheconcentrationsofknownimpuritiesinrefinedtolueneandforuseasanintegralqualitycontroltoolwheretolueneisproducedorusedinmanufacturing.Toluenepurityisreported,butachromatographicanalysiscannotdetermineabsolutepurityifunknownorundetectedcomponentsarepresentinthesample.1.1Thistestmethodcoversthedeterminationofhydrocarbonimpuritiestypicallyfoundin,andthepurityof,samplescontaining98wt%andgreatertoluene.Thistestmethodisapplicabletoimpurityconcentrationsintherangeof0.0005to1.6wt%.1.2Monocyclicaromatichydrocarbonscontaining6through8carbonatoms,cumene,1,4-dioxane,andnonaromaticaliphatichydrocarbonscontainingupto12carbonatomscanbedetectedbythistestmethod.Thenonaromaticcompoundsaredeterminedasacomposite.1.3Thefollowingappliestoallspecifiedlimitsinthistestmethod:forpurposesofdeterminingconformancewiththistestmethod,anobservedvalueoracalculatedvalueshallberoundedoff"tothenearestunit"inthelastright-handdigitusedinexpressingthespecificationlimit,inaccordancewiththerounding-offmethodofPracticeE29.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection9.
【中国标准分类号】:G16
【国际标准分类号】:71_040_50;71_080_15
【页数】:6P.;A4
【正文语种】: