초록 ▼

There is provided an azeotropic mixture consisting substantially of 1,1,1, 3,3-pentafluoropropane and hydrogen fluoride. Further, there is provided a process of separating/purifying R-245fa and/or HF from a mixture comprising R-245fa and HF wherein the mixture comprising 1,1,1,3,3-pentafluoropropane

There is provided an azeotropic mixture consisting substantially of 1,1,1, 3,3-pentafluoropropane and hydrogen fluoride. Further, there is provided a process of separating/purifying R-245fa and/or HF from a mixture comprising R-245fa and HF wherein the mixture comprising 1,1,1,3,3-pentafluoropropane and hydrogen fluoride is subjected to a distillation step so that a distillate is obtained which comprises the azeotropic mixture consisting substantially of 1,1,1,3,3-pentafluoropropane and hydrogen fluoride, and a bottom product is obtained which comprises separated/purified 1,1,1,3,3-pentafluoropropane or hydrogen fluoride.

대표청구항 ▼

[ What is claimed is:] [1.]1. The azeotropic mixture consisting essentially of 1,1,1,3, 3-pentafluoropropane and hydrogen fluoride, wherein under a pressure in a range 2.0 kg/cm.sup.2 -gauge to 10 kg/cm.sup.2 -gauge, the mixture has a 1,1,1,3,3-pentafluoropropane/hydrogen fluoride molar ratio in a r

[ What is claimed is:] [1.]1. The azeotropic mixture consisting essentially of 1,1,1,3, 3-pentafluoropropane and hydrogen fluoride, wherein under a pressure in a range 2.0 kg/cm.sup.2 -gauge to 10 kg/cm.sup.2 -gauge, the mixture has a 1,1,1,3,3-pentafluoropropane/hydrogen fluoride molar ratio in a range of above 25 to below 50 molar .alpha. of R-245fa and the remainder HF.