苄基胂酸合成研究

介绍了苄基胂酸的合成研究。胂化反应选择弱碱性环境下进行,反应温度为75±5℃、反应时间为5~8 h、氯化苄与亚砷酸钠质量比为1∶1或1∶1.1。得到苄基胂酸产品质量分数90%以上,实收率大于80%,苄基胂酸无机砷质量分数小于0.5%。并且通过母液回用可以使含砷母液得到充分回收利用。

Study on Synthesis of Benzyl Arsonic Acid

This paper overviewed the experiment on optimizing of benzyl arsenic acid synthesis craft. Arsonation should be selected in weak alkaline environment, the reaction temperature was 75 ±5℃, the re- action time ranged from 5 to 8 hours, the concentration ratio of sodium arsenite and benzyl chloride was 1 ： 1 or 1： 1. lmoL/L. The results showed that the content of Benzyl arsenic was more than 90%, the actual yield was more than 80% , and the content of inorganic arsenic of benzyl arsenic was less than 0.5%. Arsenic- containing mother liquor could be fully recycled through cycling the mother liquor to reduce the amount of ar- senic trioxide inputs and reduce production costs as well.