Purification of formic acid

Details Purification of formic acid Purification of formic acid

B - Operations, Transporting

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D

202/69

B01D 3/40 (2006.01) C07C 51/44 (2006.01) C07C 51/48 (2006.01)

Patent

CA 1062647

ABSTRACT OF THE DISCLOSURE: Formic acid is purified by extractive distillation of its aqueous solutions using a basic extractant, followed by distillation of the bottom mixture first obtained, the extractant used being N-formylmorpholine.

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