ASTM D3401-1997(2006) 卤化有机溶剂及其掺和物中的水分的标准试验方法

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【英文标准名称】:StandardTestMethodsforWaterinHalogenatedOrganicSolventsandTheirAdmixtures
【原文标准名称】:卤化有机溶剂及其掺和物中的水分的标准试验方法
【标准号】:ASTMD3401-1997(2006)
【标准状态】:现行
【国别】:
【发布日期】:1997
【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】:D26.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:溶剂;水;含量测定;试验
【英文主题词】:coulometricKarlFischertitration;halogenatedorganicsolvents;KarlFischertestmethod-watercontent;moisturecontent;solvents;volumetricKarlFischertitration;watercontent
【摘要】:Highwaterconcentrationscanhaveadetrimentaleffectonmanyusesofhalogenatedsolvents.4.1.1Watercancausecorrosionandspottingwhensolventsareusedformetalcleaning.4.1.2Watercanreducetheshelflifeofaerosolformulations.4.1.3Watercaninhibitdesiredreactionswhensolventsareusedinformulations.1.1ThesetestmethodsdescribetheuseoftheKarlFischer(KF)titrationfordeterminationofwaterinhalogenatedorganicsolventsandmixturesthereof.Waterconcentrationsfrom2to1000ppmcanbedeterminedinthesesolvents.Twotestmethodsarecoveredasfollows:1.1.1TestMethodA,WaterDeterminationUsingaCoulometricKFTitratorThecoulometrictestmethodisknownforitshighdegreeofsensitivity(typically10gH2O)andshouldbethetestmethodofchoiceifwaterconcentrationsaretypicallybelow50ppmorifonlysmallamountsofsampleareavailableforwaterdeterminations.Thistestmethodrequirestheuseofequipmentspecificallydesignedforcoulometrictitrations.1.1.2TestMethodB,WaterDeterminationUsingaVolumetricKFTitratorThevolumetrictestmethodisamoretraditionalapproachtoKFwaterdeterminations.AlthoughtitratorsarespecificallydesignedforKFvolumetricdeterminations,manyautomatictitratorsonthemarketcanbeadaptedtoperformKFtitrations.1.2Eitherofthesetestmethodscanbeusedtodeterminetypicalwaterconcentrations(15to500ppm)foundinhalogenatedsolvents.1.3ThesetestmethodsrecommendtheuseofcommerciallyavailableKarlFischertitratorsandreagents.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,seeSections11and15.
【中国标准分类号】:G04
【国际标准分类号】:71_080_20
【页数】:5P.;A4
【正文语种】: