Separation of formic acid from acetic acid by extractive distill

Details Separation of formic acid from acetic acid by extractive distill Separation of formic acid from acetic acid by extractive distill

1995-09-08

1997-02-04

Nazario-Gonzalez, Porfirio

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

Organic compounds

Carboxylic acids and salts thereof

562609, 562606, C07C 5142

Patent

active

055999794

ABSTRACT:
Formic acid is difficult to separate from acetic acid by conventional distillation or rectification because of the close proximity of their boiling points. Formic acid can be readily separated from acetic acid by using extractive distillation. Effective agents are propionic acid, butyric acid, valeric acid and 2-ethyl hexanoic acid.

REFERENCES:
patent: 1813636 (1931-07-01), Petersen et al.
patent: 4692219 (1987-09-01), Berg
E. Lloyd Jones, "Economc Saving. . . Solvent Extraction", Chemistry and Industry, pp. 1590-1592.

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