Process for purifying N-phosphonomethylglycine

Details Process for purifying N-phosphonomethylglycine Process for purifying N-phosphonomethylglycine

1990-07-30

1992-02-11

Evans, J. E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus acids or salts thereof

C07F 938

Patent

active

050877402

ABSTRACT:
N-Phosphonomethylglycine can be purified and concentrated from aqueous solutions containing N-phosphonomethylglycine and impurities, such as N-formyl-N-phosphonomethylglycine, phosphorous acid, and the like, by passing the aqueous solution through an ion exchange column containing a weakly basic ion exchange resin to remove such impurities.

REFERENCES:
patent: 4197254 (1980-04-01), Gaertner
patent: 4439428 (1984-03-01), Cox
patent: 4605522 (1986-08-01), Robbins
patent: 4684483 (1987-08-01), Richard et al.

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