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【英文标准名称】:Petroleumproducts-Determinationofsaponificationnumber-Part2:Potentiometrictitrationmethod
【原文标准名称】:石油产品皂化值的测定第2部分:电位滴定法
【标准号】:ISO6293-2-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-05
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC28
【标准类型】:()
【标准水平】:()
【中文主题词】:电势分析法;石油产品;化学分析和试验;皂化值;定义;电位测量法
【英文主题词】:Chemicalanalysisandtesting;Definitions;Petroleumproducts;Potentiometricanalysis;Potentiometricmethods;Saponificationnumber
【摘要】:ThispartofISO6293specifiesamethodforthedetermination,bypotentiometrictitration,oftheamountofconstituentsinpetroleumproductsthatwillsaponifyundertheconditionsofthetest.ISO6293-1specifiesadeterminationbycolourindicatortitration.Themethodisapplicabletomaterialshavingsaponificationnumbersintherange2mgKOH/gto200mgKOH/g.Compoundsofsulfur,phosphorus,halogensandsomeothercompoundsreactwiththealkaliandacidsunderthetestconditions.NOTES1Theresultsonusedcrankcaseandturbineoils,andonoilscontainingthecompoundsaboveasadditiveconstituents,shouldbeinterpretedwithcare,bearinginmindthepossiblehighervaluesobtainableduetotheseadditionalreactions.2Theseextraneousmaterialsincludecertainorganicacidsandmostnon-alkalisoaps.Theodourofhydrogensulfideneartheendoftheback-titrationstepisanindicationofthepresenceofcertainreactivesulfurcompounds,butotherreactivesulfurcompounds,aswellasthoseofchlorine,phosphorusandotherinterferingmaterials,givenosimpleindicationduringthetest.Agravimetricdeterminationoffattyacidcontentisanalternativeprocedurefortheestimationofsuchcompounds.
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:10P.;A4
【正文语种】:英语