Selective extraction of glyoxylic acid from aqueous mixture with

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

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260530R, C07C 5930

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active

040269299

ABSTRACT:
Glyoxylic acid is selectively extracted from its aqueous mixture with glyoxal by means of aliphatic or cycloaliphatic alcohol containing about 4 to 8 carbon atoms, a ketone containing about 4 to 8 carbon atoms, and an ester of an aliphatic carboxylic acid and aliphatic alcohol each containing up to about 6 carbon atoms, the esters containing a total of about 3 to 8 carbon atoms, allowing the mixture to stratify and separating the solvent layer enriched in glyoxylic acid.

REFERENCES:
patent: 3644508 (1972-02-01), Callighan et al.

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