Method for preparation of n-phosphonomethylglycine or salts

Details Method for preparation of n-phosphonomethylglycine or salts Method for preparation of n-phosphonomethylglycine or salts

C - Chemistry, Metallurgy

07

F

260/501.5

C07F 9/38 (2006.01)

Patent

CA 1228596

METHOD FOR PREPARATION OF N-PHOSPHONOMETHYLGLYCINE OR SALTS Abstract of the Disclosure 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.

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