Process for the preparation of aromatic aminosulphonic acids

Details Process for the preparation of aromatic aminosulphonic acids Process for the preparation of aromatic aminosulphonic acids

1982-03-31

1984-03-06

Chan, Nicky

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260509, 260396R, 260374, 260373, 260371, 546195, 546203, 546204, 546205, 546206, 548400, 548529, 548577, C07C14358, C07C14360

Patent

active

044353367

ABSTRACT:
Aminoarylsulphonic acids which have a relatively high purity and a relatively low content of aminoaryldisulphonic acids can be obtained, if they are prepared, from the corresponding arylammonium hydrogen sulphates, by an improved version of the so-called baking process, wherein the reaction is carried out under pressure at a temperature of at least 140.degree. C. and, at least partially, in the presence of water.

REFERENCES:
Alexander, JACS, 69, 1599 (1947).

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