AZEOTROPIC OR PSEUDO-AZEOTROPIC COMPOSITION COMPOSED OF HYDROFLUOROETHER

摘要

PROBLEM TO BE SOLVED: To provide a hydrofluoroether exerting minimum influence on the global environment and having high performance as a cleaning solvent, a heat- transmission medium, etc. SOLUTION: This azeotropic or pseudo-azeotropic composition is composed of 43-91 wt.% of HFE-245mf and 57-9 wt.% of HFE-347mcc wherein HFE-245mf is CF3 CH2 OCHF2 and HFE-347mcc is CF3 CF2 CF2 OCH3 defined as the code of hydrofluoroethers HFE.