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

043919871

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 cooling the crude hydrolysis mixture to a temperature below 10.degree. C., separating off the precipitated sodium carbonate and concentrating the sodium methioninate solution remaining to 40 to 65 weight percent.

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).
Haugen, "Chemical Process Principles," 2nd Ed., Part 1, pp. 146-159 (1954) TP 155 H65.
"CRC Handbook of Chemistry and Physics," 46th Ed., p. B-222 (1966).

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