Azeotropic or azeotrope-like compositions of hydrofluoric acid with dihaloethanes
AssigneeE. I. Du Pont de Nemours and Company
InventorsMaria U. D. Beug-Deeb, Barry Asher Mahler, Ralph Newton Miller
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Abstract
The instant invention relates to azeotropic or azeotrope-like compositions of hydrofluoric acid with at least one of 1,1-dichloroethane, 1-chloro-1-fluoroethane and 1,1-difluoroethane. The invention also relates to manufacturing processes for separating hydrofluoric acid from a mixture comprising hydrofluoric acid and one or more of the 1,1-dihaloethane.
Claims1
An azeotropic or azeotrope-like composition consisting essentially of about 86 to 95 mole % hydrofluoric acid and 14 to 5 mole % 1,1-dichloroethane at a temperature of from about 0.degree. C. to about 70.degree. C. and a pressure of from about 8 psia to about 90 psia.
Dependencies are inferred from the claim text.