Azeotropic compositions of 1,1,2-trichlorotrifluoroethane with c

Details Azeotropic compositions of 1,1,2-trichlorotrifluoroethane with c Azeotropic compositions of 1,1,2-trichlorotrifluoroethane with c

1989-03-01

1990-06-26

Albrecht, Dennis

Cleaning and liquid contact with solids

Processes

Gas or vapor condensation or absorption on work

134 40, 252170, 252171, 252172, 252DIG9, 570118, C11D 726, C11D 730, C11D 750, C23G 502

Patent

active

049369237

ABSTRACT:
Azeotropic mixture of 1,1,2-trichlorotrifluoroethane (CFC-113) with cis-1,2-dichloroethylene and n-propanol or isopropanol with or without nitromethane, the azeotropic mixtures being useful in solvent cleaning applications.
One azeotrope-like "mixture contains about 88-96 weight percent 1,1,2-trichlorotrifluoroethane, about 4-10 weight percent cis-1,2-dichloroethylene and about 0.1-2.0 weight percent n-propanol and boils at about 47.degree. C. at essentially atmospheric pressure. A second azeotrope-like mixture contains about 87-97 weight percent 1,1,2-trichlorotrifluoroethane, about 2-8 weight percent cis-1,2-dichloroethylene and about 1-5 weight percent isopropanol and boils at about 45.degree. C. at essentially atmospheric pressure. A third azeotrope-like mixture contains about 88-98 weight percent 1,2,2-trichlorotrifluoroethane, about 1-7 weight percent cis-1,2-dichloroethylene, about 1-5 weight percent isopropanol and about 0.1-2.0 weight percent nitromethane.

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