二丁基镁产物中氯含量测定  

Determination of chlorine content in dibutylmagnesium

作　　者：宋刚[1] 吴广文[1] 陶凌云[1] 朱少坤[1] 魏成林[1] 朱燕[1] 刘璇[1] 

机构地区：[1]武汉工程大学湖北省新型反应器与绿色化学工艺重点实验室,湖北武汉430074

出　　处：《武汉工程大学学报》2009年第9期12-15,共4页Journal of Wuhan Institute of Technology

摘　　要：探讨了用电位滴定法分别测定二丁基镁产物中格氏试剂含量和总氯含量。格氏试剂C4H9MgCl在酸性水溶液中水解，采用电位滴定法进行含量测定；总氯测定是将有机氯在NaOH和C2H5OH的混合溶液作用下水解为Cl^-，然后进行测定。测定结果的相对标准偏差为0-2.2％，用标准加入法做回收率实验，结果在95.2％-108.4％之间。This paper studied the content determination of Grignard reagent and total chlorine by potentiometric titration in dibutylmagnesium. The concentration of Grignard reagent C4H9MgCl was determined by potentiometric titration after it was hydrolyzed in acidic aqueous solution. The sample was added into the mixture solution of NaOH-C2H5OH, after chlorine changed into Cl- , then the total chlorine determination was carried out. The relative standard deviation of determination results was 0-2.2% ,and the recovery range was 95.2%-108.4% through the method of standard addition.

关 键 词：二丁基镁 格氏试剂 电位滴定 总氯 

分 类 号：O657.15[理学—分析化学]