Process for purifying 1,1,1-trifluoro-2,2-dichloroethane from is

Details Process for purifying 1,1,1-trifluoro-2,2-dichloroethane from is Process for purifying 1,1,1-trifluoro-2,2-dichloroethane from is

1994-04-28

1995-05-09

Siegel, Alan

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

Organic compounds

Halogen containing

570151, 570163, 570178, C07C 1738

Patent

active

054141672

ABSTRACT:
The 1,1,2-trifluoro-1,2-dichloroethane content is reduced or removed from 1,1,1-trifluoro-2,2-dichloroethane by contacting a gaseous mixture comprising said compounds with chrome oxide (Cr.sub.2 O.sub.3) either as such or supported, at temperatures from 180.degree. to 400.degree. C.

REFERENCES:
patent: 3349137 (1967-10-01), Cropp et al.
patent: 4748284 (1988-05-01), Gozzo et al.
patent: 4766260 (1988-08-01), Manzer et al.
patent: 4925993 (1990-05-01), Zawalski
patent: 5030372 (1991-07-01), Manoque et al.

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