New continuous industrial manufacturing process for an aqueous s

Details New continuous industrial manufacturing process for an aqueous s New continuous industrial manufacturing process for an aqueous s

1990-11-16

1992-08-11

Dees, Jose G.

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

Organic compounds

Carboxylic acids and salts thereof

562577, C07C 51235, C07C 59153

Patent

active

051380960

ABSTRACT:
Continuous manufacturing process for an aqueous solution of glyoxylic acid by nitric oxidation of an aqueous solution of glyoxal carried out in the presence of hydrochloric acid in which the oxidation is effected continuously using 0.80.+-.0.2 mole of nitric acid and 0.70.+-.0.05 mole of hydrochloric acid per mole of glyoxal in a reaction medium having a concentration by weight between 5 and 6% of hydrochloric acid and higher than 10% of nitric acid.

REFERENCES:
patent: 4698441 (1987-10-01), Mitani et al.
Patent Abstracts of Japan, vol. 9, No. 74 (C-273) [1797], Apr. 3, 1985.

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