| 摘要 |
A process that can be used for isolating a fluorinated alkanoic acid from an aqueous solution also containing inorganic fluorides is provided. This process comprises (A) acidifying an aqueous solution comprising an ammonium or alkali metal salt of a fluorinated alkanoic acid to produce an acidified solution, (B) heating the acidified solution to produce an organic layer and an aqueous layer, (C) separating and recovering the organic layer from the aqueous layer, (D) optionally washing the organic layer with an acid solution, (E) optionally isolating the fluorinated alkanoic acid, and (F) further optionally converting the fluorinated alkanoic acid to its ammonium or alkali metal salt.
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