Fluorine conversion hydrocarbon type azeotropic blend and azeotropic way blend

摘要

PURPOSE:To obtain a fluorinated hydrocarbon based azeotropic and azeotropic- like composition consisting of the title compound and 1,1-dichloro-1-fluoroethane and usable as a substitute for fluorocarbon and simultaneously having excellent characteristics as a solvent, etc. CONSTITUTION:The above-mentioned composition obtained by using (A) 1,3- dichloro-1,1,2,2,3-pentafluoropropane and (B) 1,1-dichloro-1-fluoroethane as essential components and blending the component (A) with the component B at the azeotropic ratio of 1-36wt.% component A and 64-99wt.% component B, preferably 6-26wt.% component A and 74-99wt.% component B, especially 16wt.% component A and 84wt.% component B and being incombustible and having excellent characteristics which are equivalent or above to that of conventional fluorocarbons and simultaneously free from variation of composition during recycle because of presence of azeotropic point, usable in same manner as a conventional single fluorocarbon and suitable as a substitute for a conventional CCl2FCClF2, because the aimed composition has higher cleaning power than that of the above-mentioned conventional single CCl2FCClF2, especially as a cleaning solvent.