Dichlorodifluoromethane

Common card · No. 259805

Dichlorodifluoromethane (R-12) is a colorless gas popularly known by the genericized brand name Freon (as Freon-12). It is a chlorofluorocarbon halomethane (CFC) used as a refrigerant and aerosol spray propellant. In compliance with the Montreal Protocol, its manufacture was banned in developed countries in 1996 and developing countries in 2010 due to its damaging effect on the ozone layer. Its only allowed usage is as a fire retardant in submarines and aircraft. It is soluble in many organic solvents. Most R-12 cylinders have been colored white, but more recent standards have shifted to an off-white or metallic gray color protocol. R-12 has the highest potential for ozone destruction of all refrigeration gases.

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