... HIGH PURITY EXCELLENT THERMAL AND CHEMICAL PROPERTIES FREON GAS R22 HONEYWELL, DAIKAIN, JUHUA, DUPONT, HARP, FORNE BRANDS AVAILABLE. Physical Properties Molecular formula ... :400L,800L,926L,1000LISO-TANK 13.6kg (30lbs) Refrigerant Gas R22,high purity 99.9%