Titrimetric determination of cis-3,6-endomethylene-1,2,3,6-tetrahydrophthalic (endic) anhydride and the impurity of the corresponding acid

被引：0
|
作者：
Evtushenko, YM [1 ]
Zaitsev, BE
Ivanov, VM
Karpushina, NA
机构：
[1] AOZT Elektroizolit, Sergiev Posad 143350, Moscow Oblast, Russia
[2] Patrice Lumumba Peoples Friendship Univ, Dept Physicomath & Nat Sci, Moscow 119517, Russia
[3] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia
来源：
JOURNAL OF ANALYTICAL CHEMISTRY | 1998年 / 53卷 / 11期
关键词：
D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A titrimetric procedure is proposed for the determination of endic anhydride by its reaction with piperidine (anhydride and acid groups) and triethylamine (acid groups) in acetonitrile. The procedure makes it possible to eliminate time-consuming stages of the hydrolysis of anhydride in the presence of pyridine and the dissolution of anhydride in aniline. It is demonstrated that the results of visual titration in the presence of indicators should be normalized with the inclusion of the indicator error in the determination of the total of anhydride and acid groups.
引用
收藏
页码：1053 / 1056
页数：4
相关论文
共 32 条
1234