Process for preparing alkali metal salts of trifluoroacetic acid

Details Process for preparing alkali metal salts of trifluoroacetic acid Process for preparing alkali metal salts of trifluoroacetic acid

1986-10-20

1988-07-26

Meyer, Donald B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C07B 5321

Patent

active

047601779

ABSTRACT:
A process for preparing alkali metal salts of trifluoroacetic acid in the anhydrous and crystalline state. In a first stage, trifluoroacetic acid is neutralized with an alkaline agent in a medium consisting essentially of an alcohol containing 3 to 4 carbon atoms. In a second stage, the water formed by the neutralization reaction is removed by azeotropic distillation. In a third state, the remainder not removed by distillation in the second stage is treated by adding a hydrocarbon which does not solubilize an alkali metal trifluoroacetate and which forms an azeotrope with the alcohol to separate crystals of anhydrous alkali metal trifluoroacetate.

REFERENCES:
patent: 2920086 (1960-01-01), Barnhart et al.
patent: 3997599 (1976-12-01), Grinstead
patent: 4049681 (1977-09-01), Dietrich et al.

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