| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel azeotropic composition and a novel pseudoazeotropic composition which does not adversely affect the detergency, low toxicity and the like which chlorofluorohydrocarbons and chlorohydrocarbons possess, has no fear of the destruction of the ozone layer and, simultaneously, has a reduced greenhouse effect. SOLUTION: The azeotropic or pseudoazeotropic composition is composed, of 1,1,1,2,3,3-hexafluoro-3-(2,2,2-trifluoroethoxy)propane represented by formula (1): CF<SB>3</SB>CHFCF<SB>2</SB>OCH<SB>2</SB>CF<SB>3</SB>and at least one butanol to be selected from 2-butanol, isobutanol, and t-butanol. COPYRIGHT: (C)2003,JPO
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