第 46 卷第 6 期 Vol. 46 No. 6 2016 年 12 月 Dec 2016

所属栏目：农药及中间体 对甲苯磺酰甲基异腈的稳定性研究

张晓光，王 威，张媛媛，毛明珍，宁斌科 （西安近代化学研究所，陕西 西安 7l0065）

摘　要：研究对甲苯磺酰甲基异腈在酸性、碱性条件及受热时的稳定性。考察对甲苯磺酰甲基异腈在温度20℃和50℃、pH在1～14范围内的稳定性；采用DSC评价甲苯磺酰甲基异腈的热稳定性。结果表明：对甲苯磺酰甲基异腈在无机碱和有机碱中均发生离解，生成-Tos基团和甲酰胺基；在酸性溶液中离解变质并发生一定聚合反应；在109.5℃吸热57.73 J／g，114.2℃发生热分解释放热量667.7 J／g。

关键词：对甲苯磺酰甲基异腈；酸碱稳定性；热稳定性

中图分类号：TQ450.1　　文献标识码：A　　文章编号：1009-9212（2016）06-0028-03

Study on the Stability of Toluenesulfomethyl Isocyanide

ZHANG Xiao-guang, WANG Wei, ZHANG Yuan-yuan, MAO Ming-zhen, NING Bin-ke (Xi’an Modern Chemistry Research Institute, Xi’an 710065, China)

Abstract：The acid-base and thermal stability of the toluenesulfomethyl isocyanide was studied. The stability of toluenesulfomethyl isocyanide was studied in acid-base solution at the temperature of 20℃ and 50℃ respectively; the thermal stability of toluenesulfomethyl isocyanide was studied using DSC. Toluenesulfomethyl isocyanide dissociated completely in inorganic alkali for-Tos group and a carboxamide group in alkaline solution; the dissociation metamorphism were polymerization in the acidic solution; the process of toluenesulfomethyl isocyanide was endothermic at 109.5℃, absorbing 57.73 J/g and the decomposition occurs at 114.2℃, gaving 667.7 J/g; The results can provide theoretical data for the industrial production of toluenesulfomethyl isocyanide.

Key words：toluenesulfomethyl isocyanide; acid-base stability; thermal stability

作者简介： 张晓光（1985-），男，陕西岐山人，硕士，主要从事农药原药及医药中间体，高分子橡塑助剂的研究（E-mail：xg_zhang396@ 163.com）。

收稿日期： 2016-09-2