PROCESS FOR PRODUCING 1,1,1,3,3-PENTAFLUOROPROPANE

摘要

A process for producing 1,1,1,3,3-pentafluoropropane (HFC-245fa) which comprises: a first step in which 1-chloro-3,3,3-trifluoropropene (1233zd) is reacted with hydrogen fluoride in a gas phase to mainly obtain 1,3,3,3-tetrafluoropropene (1234ze); and a second step in which the 1,3,3,3-tetrafluoropropene (1234ze) is separated as an ingredient containing no hydrogen chloride from the crude composition obtained in the first step and reacted with hydrogen fluoride in a gas phase to obtain 1,1,1,3,3-pentafluoropropane (HFC-245fa). The process does not necessitate separation of the HFC-245fa from the 1233zd. Thus, HFC-245fa can be economically produced.