Purification of 1,1,1-trichloroethane by extractive distillation

Details Purification of 1,1,1-trichloroethane by extractive distillation Purification of 1,1,1-trichloroethane by extractive distillation

1975-09-08

1976-11-02

Yudkoff, Norman

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 63, 260652P, B01D 340

Patent

active

039896013

ABSTRACT:
1,1,1-Trichloroethane containing 1,2-dichloroethane as a principal contaminant is purified by extractive distillation, employing as an extraction solvent a saturated or unsaturated tertiary C.sub.4 to C.sub.7 alcohol, e.g., t-amyl alcohol, 2-methyl-3-buten-2-ol or 2-methyl-3-butyn-2-ol, or mixtures thereof, organic monocarboxylic acids and organic monocarboxylic acid anhydrides.

REFERENCES:
patent: 2106158 (1938-01-01), Povenz et al.
patent: 3113079 (1963-12-01), Bergeron et al.
patent: 3282801 (1966-11-01), Wiist
patent: 3658658 (1972-04-01), Bursack et al.

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