METHOD FOR PREPARATION OF N-PHOSPHONOMETHYLGLYCINE OR SALTS

摘要

METHOD FOR PREPARATION OF N-PHOSPHONOMETHYLGLYCINE OR SALTS A method for the production of N-phosphonomethylglycine and soluble salts thereof is disclosed in which glycinemethylenephosphinic acid or its soluble salts are reacted with an excess of an alkali or alkaline earth base for a period of time and at a sufficient temperature to cause oxidation of the glycinemethylenephosphinic acid or its soluble salts thereof to N-phosphonomethylglycine salts, from which N-phosphono-methylglycine may be obtained by acidification. The N-phosphonomethyle-glycine or its soluble salts, are used as herbicides.