What are CFCs and HCFCs?
Chlorofluorocarbons (CFCs) and Fluorohydrocarbons (CFHCs) are ozone-destroying compounds. CFCs and CFHCs were commonly used as coolants in refrigerators and air conditioners, and as propellants in aerosol spray products. In the presence of ultraviolet light, CFCs and CFHCs break down, releasing a chlorine atom. Chlorine atoms are highly reactive and cause ozone molecules to break apart very quickly. The reaction occurs repeatedly, destroying ozone faster than it can be created. CFCs and CFHCs can endure in the atmosphere for many years. As such, even though many products containing CFCs and CFHCs have been banned in the US, the effect of them will be felt for many years to come.
