论文部分内容阅读
1-环己烯-1,2-二羧酰亚胺(下称亚胺)是农药胺菊酯的中间体,它由1-环己烯-1,2-二羧酸酐(下称酸酐)和尿素反应在乙醇中制得,关于它们共存时的分析方法,未见报道。它们的类似物4-环己烯-1,2-二羧酸酐和亚胺可用色谱法同时分析,本文采用双指示剂非水滴定法,同时测定亚胺和酸酐的含量,并且可以排除乙醇、尿素等杂质的干扰,对主要物质亚胺而言,相对误差为0.5％,酸酐的相对误差小于0.6％,整个分析周期10分钟左右即可完成。
1-Cyclohexene-1,2-dicarboximide (hereinafter referred to as imine) is an intermediate of pesticide tetramethrin and is composed of 1-cyclohexene-1,2-dicarboxylic anhydride (hereinafter referred to as anhydride) And urea reaction in ethanol, the analysis of their coexistence when the method has not been reported. Their analogues of 4-cyclohexene-1,2-dicarboxylic anhydride and imine can be analyzed simultaneously by chromatography. In this paper, a double indicator non-aqueous titration method was used to determine the content of imine and anhydride simultaneously. And ethanol, urea For impurities such as imine, the relative error is 0.5%, the relative error of anhydride is less than 0.6%, and the whole analysis period can be completed in about 10 minutes.