| 摘要 |
PURPOSE:To provide the subject composition composed of 1,1-dichloro-2,2,3,3,3- pentafluoropropane and two other compounds, having incombustibility and characteristics comparable or superior to those of conventional fluorocarbons and suitable as a fluorocarbon substitute or cleaning solvent. CONSTITUTION:An azeotropic composition composed of (A) 88wt.% of 1,1- dichloro-2,2,3,3,3-pentafluoropropane, (B) 8wt.% of 1,3-dichloro-1,1,2,2,3- pentafluoropropane and (C) 4wt.% of 2,3-dimethylbutane and an azeotrope-like composition composed of 6-94wt.% (preferably 82-93wt.%) of the component A, 1-83wt.% (preferably 3-14wt.%) of the component B and 0.1-26wt.% (preferably 0.1-9wt.%) of the component C. The composition has an azeotropic point, causes little variation of the composition in recycling and is usable similar to conventional simple fluorocarbon and applicable without necessitating considerable change of conventional technique. |
