Also known as: Chlorofluorocarbons, CFCs, Halons Other names include: Fluorotrichloromethane, Dichlorodifluoromethane, Trichlorotrifluoroethane, Bromochlorodifluoromethane, Dibromotetrafluoroethane, Chlorodifluoromethane


Freons are colorless liquids or gases. Freons were used as coolants or pressurizers in spray can products, including drugs. In the 1970s, scientists discovered that these chemicals were destroying the earth's ozone layer. This was allowing potentially dangerous levels of ultraviolet light to reach the earth. The making and using of freons is now restricted, and freons are being replaced by safer chemicals.

Freons are gases at normal room temperature, liquids when cooled or compressed. Spilled liquid freons do not remain at the spill site for more than a few minutes before they evaporate. If liquid freons leak into soil before evaporation, it can seep into groundwater.

(P-44602  Revised 05/2012)

This fact sheet summarizes information about this chemical and is not a complete listing of all possible effects. It does not refer to work exposure or emergency situations.


Last Revised: November 22, 2014