CFC+Alternatives

CFC Alternatives
Hydrochlorofluorocarbons (HCFC's such as CHCIF2) are used in place of CFC's because they are largely destroyed in the lower region of the atmosphere before they reach the stratosphere.

Hydroflorocarbons (HFC's such as CH2FCF3) do not contain chlorine or bromine and therefore have no potential to depleting the ozone layer since cannot form halogen free radicals.