Hydrogen chlorine fluorine carbons, used as replacement for CFC's. Because of the presence of a hydrogen atom, the HCFC's are much faster degraded than CFC's. That means that a much smaller part is reaching the ozone layer. Replacement of CFC's by HCFC's and other materials already reduced the global ozone depletion potential to 3% of what it was in the early nineties.

Compounds used as substitutes for CFC?s, designed to degrade / break down before reaching the ozone layer. Suspected of contributing to atmospheric chlorine.

Hydro chlorofluorocarbons. G aseous compounds that contribute to stratospheric ozone depletion.