| abstract |
PURPOSE: To provide the subject composition capable of being employed as a freon substituted while being satisfied with the excellent characteristics of the conventional freon and having excellent characteristics as a solvent, etc., by comprising R225ca, R225cb and ethanol. n CONSTITUTION: An azeotropic composition comprising (A) 94.8wt.% of 3,3- dichloro-1,1,1,2,2-pentafluoropropane (R225ca), (B) 2.7wt.% of 1,3-dichloro-1,1,2,2,3- pentafluoropropane (R225cb) and (C) 2.5wt.% of ethanol, and an azeotropic-like composition comprising 85-99wt.%, preferably 90-99wt.%, of A, 1-15wt.%, preferably 1-10wt.%, of B and 1-10wt.%, preferably 1-8wt.%, of C. The composition is satisfied with the excellent characteristics of the conventional R113/ethanol azeotropic system, does not change the composition thereof when recycled, can be employed in the same manner as the R113/ethanol azeotropic system and does not require the large change of the conventional technique. n COPYRIGHT: (C)1991,JPO&Japio |