盐酸乙脒中难挥发杂质的重量分析法  

Determination of Involatile Impurities in Acetamidine Hydrochloride by Gravimetric Analysis

作　　者：周学永[1] 李莉莉[2] 吕早生[1] 

机构地区：[1]武汉科技大学,湖北武汉430081 [2]天津理工大学,天津300191

出　　处：《武汉科技大学学报》2006年第3期241-243,共3页Journal of Wuhan University of Science and Technology

基　　金：湖北省教育厅科研计划资助项目(2002A01015)

摘　　要：采用重量分析法测定盐酸乙脒中难挥发杂质的含量。将2.0g盐酸乙脒样品放入恒重瓷坩埚内,将其在电炉上炭化1.0h后转入马弗炉,700℃高温下灼烧1.5h。结果表明,盐酸乙脒平均灰分为0.6‰,当盐酸乙脒中含有氯化钠时,灰分升高,且氯化钠添加量与灰分呈高度正相关关系(相关系数r2=0.998)。The content of involatile impurities in acetamidine hydrochloride was determined by gravimetric analysis. Two grams of acetamidine hydrochloride was transferred into a crucible whose weight was constant. The acetamidine hydrochloride was carbonized on an electric furnace for one hour, then transferred into a maf- fie furnace to be heated at 700 ℃ for 1.5 h. The results show that ： the ash of acetamidine hydrochloride determined by this method is 0.6‰; the ash increases when the sample of acetamidine hydrochloride contains sodium chloride ; and there is a high correlation between the content of sodium chloride and the ash （ the correlation coefficient r^2 = 0. 998）.

关 键 词：盐酸乙脒 杂质 重量分析 

分 类 号：TQ225.264[化学工程—有机化工]