Process for dearsenifying phosphoric acid solutions

Details Process for dearsenifying phosphoric acid solutions Process for dearsenifying phosphoric acid solutions

1985-11-26

1987-05-26

Doll, John

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

C01B 2516, C01B 2526

Patent

active

046684921

ABSTRACT:
Phosphoric acid solutions are dearsenified by treating them with a sulfide and separating the resulting precipitate from the purified solution. The sulfide is at least one compound of the general formula P.sub.4 S.sub.x in which x stands for a number of 3 to 10.

REFERENCES:
patent: 3421845 (1969-01-01), Peterson
patent: 4146575 (1979-03-01), Gallistru et al.
patent: 4485078 (1984-11-01), Weston et al.

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