PROCESS FOR SEPARATING PENTAFLUOROETHANE FROM A MIXTURE COMPRISING HALOGENATED HYDROCARBONS AND CHLOROPENTAFLUOROETHANE

摘要

A process is disclosed for separating pentafluoroethane from a mixture comprising pentafluoroethane, 1,1,1,-trifluoroethane and chloropentafluoroethane by using alcohols such as methanol, ethanol, among others, in an extractive distillation process. In one aspect of the invention, an azeotropic or azeotrope-like composition is formed by distilling the mixture.