The present invention provides extractive distillation processes for
removing difluoromethane (HFC-32) from a mixture comprising HFC-32 and at
least one of chlorodifluoromethane (CFC-12), 1,1,1-trifluoroethane
(HFC-143a), chloropentafluoroethane (CFC-115), and pentafluoroethane
(HFC-125) using hydrocarbon, chlorocarbon, and oxygen-containing
extractive agents.