HRID431286

反应详情

EQUATION

反应方程式

HRID 431286 的结构方程式

PROCEDURE

实验过程

GB 1026366 describes the preparation of the tetrasodium salt of dichloromethylenebisphosphonic acid by refluxing dichloromethylene bisphosphonate tetraisopropyl ester with concentrated hydrochloric acid. The acidic solution was concentrated and twice azeotroped with isopropanol. Neutralisation of the acid with sodium hydroxide yielded the tetrasodium salt.

WORKUP

后处理

  1. concentrationThe acidic solution was concentrated
  2. customtwice azeotroped with isopropanol