R-22 refrigerant, alias R22, Freon 22, F-22, HCFC-22, Chlorodifluoromethane, trade names have Freon 22, Genetron 22 other Chinese name Chlorodifluoromethane, the English name Chlorodifuoromethane, Formula CHClF2 . Because R-22 belong to HCFC substances (ODS second batch of restricted substances Class II Ozone-depleting Substances) - on the ozone layer and the greenhouse effect exists, so in developed countries (the EU, Japan, USA), has stopped the initial installation on a new air-conditioning, refrigeration equipment; China is for the production of R22 refrigerant, initial installation, and then add basically no restrictions. R-22 R-22 as the main purpose of today's most widely used in low-temperature refrigerant, mainly used in home air conditioning, commercial air conditioners, central air conditioning, mobile air conditioning, heat pump water heaters, dehumidifiers, refrigerated dryers, cold storage, food refrigeration equipment , marine refrigeration equipment, industrial refrigeration, commercial refrigeration, refrigeration condensing units, supermarket display display cabinets and other refrigeration equipment. Chlorodifluoromethane polytetrafluoroethylene resin may also be used in the production of raw materials and intermediates 1121 fire extinguishing agent, and a polymer (plastic) a physical blowing agent. Properties R-22 R-22 refrigerant name molecular weight 86.5 boiling point (1atm), ℃ -40.8 critical temperature, ℃ 96.24 critical pressure, kPa 4980 saturated vapor pressure (25 ℃), (kPa 1044 under the boiling point of the heat of vaporization / evaporation latent heat, 1atm ), kJ / kg 233 ozone depleting potential (ODP) 0.034 global warming potential (GWP, 100 yr) 1700 ASHRAE security level A1 (non-toxic and non-flammable) R-22 refrigerant packaging disposable cylinder packaging: 13.6kg / bottle , 22.7kg / bottle; reusable packaging cylinder (on recycled packaging cylinder): 400kg / bottle, 800kg / bottle. R-22 storage, transport R-22 refrigerant cylinders for pressurized containers should be stored away from fire, heat, avoid direct sunlight, usually put storage in a cool, dry and ventilated warehouse; handling should pack light, light unloading prevent the cylinder and valve damage and other accessories.