Process for the preparation of 3-hydroxybenzoic acid

Details Process for the preparation of 3-hydroxybenzoic acid Process for the preparation of 3-hydroxybenzoic acid

1981-04-27

1982-10-12

Killos, Paul J.

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

Organic compounds

Carboxylic acids and salts thereof

C07C 6503

Patent

active

043540384

ABSTRACT:
A process for the preparation of an alkali metal salt of 3-hydroxybenzoic acid and the preparation of 3-hydroxybenzoic acid therefrom is disclosed wherein sulphophthalic acid or a salt thereof is reacted with an alkali metal hydroxide at a temperature in the range of 200.degree. to 300.degree. C. at a pressure of 10 to 30 bars.

REFERENCES:
patent: 3099686 (1963-07-01), Keith et al.

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