Montreal Protocol – Annex A: Controlled substances Group Substance Ozone-Depleting Potential* 100-Year Global Warming Potential Group I CFCl3 (CFC‑11) 1.0 4 750 CF2Cl2 (CFC‑12) 1.0 10 900 C2F3Cl3 (CFC‑113) 0.8 6 130 C2F4Cl2 (CFC‑114) 1.0 10 000 C2F5Cl (CFC‑115) 0.6 7 370 Group II CF2BrCl (halon‑1211) 3.0 CF3Br (halon‑1301) 10.0 C2F4Br2 (halon‑2402) 6.0 * These ozone depleting potentials are estimates based on existing knowledge and will be reviewed and revised periodically.