Patent ID: 6303838
Filing Date: 2001-10-16
Classification: C07C

Abstract:
A process for separating 1,1,1,3,3-pentafluoropropane (HFC-245fa) from hydrogen fluoride (HF), comprising:contacting a first mixture comprising 1,1,1,3,3-pentafluoropropane (HFC-245fa) and hydrogen fluoride (HF) with an entraining agent selected from the group consisting of hydrocarbons, chlorofluorocarbons, hydrochlorofluorocarbons and fluorocarbons, wherein said entraining agent has a normal boiling point of from about -50.degree. C. to about 10.degree. C., to form a second mixture,distilling the second mixture and thereby separating the 1,1,1,3,3-pentafluoropropane (HFC-245fa) from hydrogen fluoride (HF) and entraining agent, andrecovering 1,1,1,3,3-pentafluoropropane (HFC-245fa).