R502 , a blend refrigerant of HCFC-22 and CFC-115 . Mainly it is a substitute of R502. used specially in Iow tempreture re-frigerating system.

Chlorodifluoromethane(HCFC-22), a colorless gas at room temperature, is a colorless, non-toxic, nonflammable and transparent liquid under the pressure created by itself..........