A 50:50 isomeric mixture of HCFC-225ca (3, 3-dichloro-1, 1, 1, 2, 2-pentafluoropropane) and HCFC-225cb (1, 3-dichloro-1, 1, 2, 2, 3-pentafluoropropane); proposed as a substitute for CFC-113; inhalation toxicity in liver of rats was reversible following 14 days of recovery.