PROCESS FOR PRODUCING HIGH PURITY INTERMOLECULAR SALT OF 3-CARBOXY-N,N,N-TRIMETHYL-PROPANE-1-AMINE HYDROXIDE

摘要

A new manufacturing method of high purity grade 3-carboxy-N,N,N-trimethyl-1-propanamine hydroxide inner salt is developed, based on precipitation of inorganic salts by treatment of gamma-butyrobetaine double salts with carbon or sulphur dioxide.