Process for the production of aqueous sodium methioninate soluti

Details Process for the production of aqueous sodium methioninate soluti Process for the production of aqueous sodium methioninate soluti

1982-02-10

1983-07-05

Shippen, Michael L.

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

Organic compounds

Carboxylic acids and salts thereof

562554, C07C149247

Patent

active

043919880

ABSTRACT:
Aqueous sodium methioninate solutions having a low content of sodium carbonate can be recovered from the crude hydrolysis mixture resulting from the saponification of 5-(.beta.-methylmercaptoethyl)-hydantoin with 1.1 to 6 equivalents of sodium hydroxide and/or sodium carbonate by distilling off the water from the crude hydrolysis mixture until the sodium methioninate content is 40 to 65 weight percent, and after cooling to at most room temperature separating off the precipitated sodium carbonate.

REFERENCES:
patent: 2557920 (1951-06-01), White
patent: 2642459 (1953-06-01), White
patent: 3636098 (1972-01-01), Shima
Hill, Biochem. J., 28, pp. 1008-1013, (1934).
Hougen, "Chemical Process Principles", 2nd Ed., pp. 146-159, (1954).
CRC Handbook of Chemistry and Physics", 46th Ed., p. B-222, (1966).

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