Method for purifying glycine

Details Method for purifying glycine Method for purifying glycine

1991-05-24

1993-10-19

Dees, Jose G.

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

Organic compounds

Carboxylic acids and salts thereof

C07C22908, C07C21508

Patent

active

052547299

ABSTRACT:
A method for purifying glycine characterized by comprising the steps of adjusting the pH of an aqueous glycine solution to 6 or less with a mineral acid and/or an organic acid or an acidic cation exchange resin and subsequently decoloring said aqueous glycine solution by active carbon treatment.

REFERENCES:
patent: 3536726 (1970-10-01), Fink et al.
patent: 3875221 (1975-04-01), Mihara et al.
patent: 4299978 (1981-11-01), Nakayasu et al.
patent: 4619948 (1986-10-01), Kennedy et al.
Semmens et al., J.-Am. Water Works Assoc., 78(5), pp. 89-93 (1986) (Abstract).
Patent Abstracts of Japan, vol. 11, No. 398, Dec. 25, 1987, 62-158246.
Patent Abstracts of Japan, vol. 10, No. 36, Feb. 13, 1986, 60-188353.
Japanese Patents Report, CH Section, vol. 79, No. 5, Mar. 2, 1979, J7 9001686.

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