基本解释：2,4-二氯甲苯
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New process of 2,4-dichlorotoluene and analysis on benefit of economic and environment protection;2,4-二氯甲苯新生产工艺及经济环保效益分析
Some measures were adopted in the synthesis of 2,4-dichlorotoluene, such as slowing the stirring rotation rate of the reactor, improvement of chlorine addition to improve the reaction conditions yield of chlorination reaction, chlorine utilization and selectivity of 2,4-dichlorotoluene significantly.采用降低反应釜搅拌转速、改进通氯方式、降低反应温度等方法,改善了2,4-二氯甲苯合成的反应条件。
To solve the problem existed in the synthesis process of 2,4-dichlorotoluene, improvement on this process had been made and the optimal process conditions were established in which the reaction temperature (40 ℃) and speed of agitation (30 r/min) were determined and several tubes used to feed chlorine.针对目前国内2,4-二氯甲苯生产合成工艺中存在的问题,改进了合成工艺,最佳工艺条件为反应温度40℃,转速30r min以及多管道通氯,使氯化收率提高至75%,氯气利用率提高至90%。
In this article, 3-chloro-4-methyl aniline is used as initial material, and 2,4-dichlorobenzaldehyde is synthesized through 4 steps of diazotization, sandmeyer reaction, chlorination and hydrolysis.2,4-二氯苯甲醛是杀菌剂烯唑醇等农(yào)品种的有机中间体。
An analytical method of 2,4-dichlorobenzaldehyde by RP-HPLC has been established.建立了对2,4-二氯苯甲醛含量进行测定的反相高效液相色谱法。
