Lowering post-precipitation in merchant acid

Details Lowering post-precipitation in merchant acid Lowering post-precipitation in merchant acid

1990-11-26

1991-11-19

Langel, Wayne A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423321R, C01B 25222, C01B 25234

Patent

active

050664719

ABSTRACT:
The present process stabilizes merchant acid from bottoms solutions against post-precipitation by heating the acid to a temperature of at least about 180.degree. F. for about 12 to about 48 hours. The stabilized acid product exhibits less than about 1 wt % solids precipitation after even 14 days of standing at about 70.degree. F.

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