Method for preparing disodium 2,2'-dithiobis(ethanesulphonate)

摘要

The invention concerns a novel method for industrial preparation of disodium 2,2'-dithiobis(alkylsulphonates), and in particular disodium 2,2'-dithiobis(ethanesulphate) (dimesna). Said novel method is summarized by the reaction diagram (A). In diagram (A), Hal represents a halogen atom, and preferably a bromine atom; M represents a sodium or potassium atom; and n represents an integer ranging between 0 and 2.