Process for isolating H acid and K acid

Details Process for isolating H acid and K acid Process for isolating H acid and K acid

1982-04-14

1984-01-17

Chan, Nicky

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C14348

Patent

active

044263341

ABSTRACT:
The invention relates to a process for isolating H acid and K acid in the form of their monoalkali metal salts from acid aqueous solutions which contain these two acids and alkali metal ions and may contain other aminonaphtholdisulphonic acids, in which process H acid monoalkali metal salts are precipitated at elevated temperatures from solutions which contain not only sodium ions but also potassium ions and then precipitating K acid monoalkali metal salts by cooling down the filtrate obtained after separating off the H acid monoalkali metal salts.

REFERENCES:
patent: 4111979 (1978-09-01), Kotera et al.
patent: 4166826 (1979-09-01), Schossler et al.
patent: 4178308 (1979-12-01), Schossler et al.
patent: 4325889 (1982-04-01), Behre et al.

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