Process for making chromic acid

Details Process for making chromic acid Process for making chromic acid

1991-09-09

1995-02-28

Bos, Steven

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

423 57, 423487, 423544, 423596, 423597, 210913, C01G 3700, C01G 3714, C01B 701, C01B 1796

Patent

active

053935039

ABSTRACT:
Disclosed is an improvement on a process in which sodium chromate is reacted with sulfuric acid to produce sodium bichromate and sodium sulfate, and the sodium bichromate is reacted with sulfuric acid to produce chromic acid and sodium bisulfate. In the improvement, the sodium sulfate and sodium bisulfate are reacted with hydrogen chloride to produce sulfuric acid, which is recycled, and sodium chloride.

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