Illustrated Glossary of Organic Chemistry

Montreal Protocol: An international agreement negotiated in 1987, with the aim of reducing man-made atmospheric organohalides (such as chlorofluorocarbons), and curbing ozone depletion.

Graphs showing the decrease in various atmospheric organohalides, as well as effective equivalent global tropospheric chlorine (EECl) after the implementation of the Montreal Protocol. CFC = chlorofluorocarbon. HCFC = hydrochlorofluorocarbon.