| 摘要 |
PURPOSE:To obtain the subject compound useful as a fluorocarbon substitute. having excellent characteristics as a solvent, etc., by combining 1,1-dichloro-1- fluoroethane with methanol or ethanol. CONSTITUTION:A fluorinated hydrocarbon-based azeotropic mixture comprising 1,1-dichloro-1-fluoroethane (R141b) or methanol or ethanol. An azeotropic mixture comprising 99.9 to 90wt.% R141b and 0.1 to 10wt.% ethanol or methanol, especially 96.1wt.% R141b and 3.6wt.% methanol and 98.8wt.% R141b and 1.2wt.% ethanol are preferable as the azeotropic mixture. The azeotropic mixture can reduce the amount of fluorocarbon used and is usable as a fluorocarbon substitute while satisfying excellent characteristics of fluorocarbon. The azeotropic mixture shows excellent cleaning power and has a little change of composition even by recycling. |
