Refrigerant gas r22 . COLORLESS AND CLEAR,ODORLESS HIGH PURITY ... ,Odor Odorless Application Chlorodifluoromethane (HCFC-22),a colorless gas at room temperature,is a colorless ,non - toxic ... no corrosivity to metals. Its main applications include refrigerant(-80°Cgrade),raw material for PTFE production and ... Refillable cylinder:400L,800L,926L,1000LISO-TANK Air Conditioner Refrigerant R22, 22.7kg(50lbs)