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Class I Ozone-depleting Substances

Chemical Name Life time, in years ODP5 (WMO 2006) ODP4 (40 CFR Amend) ODP3 (40 CFR) ODP2 (Montreal Protocol) ODP1 (WMO 2002) GWP6 (WMO 2006) GWP5 (SROC) GWP4 (40 CFR) GWP3 (TAR) GWP2 (SAR) GWP1 (WMO 2002) CAS Number
Group I (from section 602 of the CAA)
CFC-11 (CCl3F) Trichlorofluoromethane 45 1 1 1 1 1 4750 4680 4000 4600 3800 4680 75-69-4
CFC-12 (CCl2F2) Dichlorodifluoromethane 100 1 1 1 1 1 10890 10720 8500 10600 8100 10720 75-71-8
CFC-113 (C2F3Cl3)                              1,1,2-Trichlorotrifluoroethane 85 1 0.8 1 0.8 1 6130 6030 5000 6000 4800 6030 76-13-1
CFC-114 (C2F4Cl2) Dichlorotetrafluoroethane 300 1 1 1 1 0.94 10040   9300 9800   9880 76-14-2
CFC-115 (C2F5Cl) Monochloropentafluoroethane 1700 0.44 0.6 0.6 0.6 0.44 7370   9300 7200   7250 76-15-3
Group II (from section 602 of the CAA)
Halon 1211 (CF2ClBr) Bromochlorodifluoromethane 16 7.1 3 3 3 6 1890 1860   1300   1860 353-59-3
Halon 1301 (CF3Br) Bromotrifluoromethane 65 16 10 10 10 12 7140 7030   6900   7030 75-63-8
Halon 2402 (C2F4Br2) Dibromotetrafluoroethane 20 11.5 6 6 6 <8.6 1640 1620       1620 124-73-2
Group III (from section 602 of the CAA)
CFC-13 (CF3Cl) Chlorotrifluoromethane 640   1 1 1 1 14420   11700 14000   14190 75-72-9
CFC-111 (C2FCl5) Pentachlorofluoroethane     1 1 1 1             354-56-3
CFC-112 (C2F2Cl4) Tetrachlorodifluoroethane     1 1 1 1             76-12-0
CFC-211 (C3FCl7) Heptachlorofluoropropane     1 1 1 1             422-78-6
CFC-212 (C3F2Cl6) Hexachlorodifluoropropane     1 1 1 1             3182-26-1
CFC-213 (C3F3Cl5) Pentachlorotrifluoropropane     1 1 1 1             6/5/2354
CFC-214 (C3F4Cl4) Tetrachlorotetrafluoropropane     1 1 1 1             29255-31-0
CFC-215 (C3F5Cl3) Trichloropentafluoropropane     1 1 1 1             4259-43-2
CFC-216 (C3F6Cl2) Dichlorohexafluoropropane     1 1 1 1             661-97-2
CFC-217 (C3F7Cl) Chloroheptafluoropropane     1 1 1 1             422-86-6
Group IV (from section 602 of the CAA)
CCI4 Carbon tetrachloride 26 0.73 1.1 1.1 1.1 0.73 1400 1380 1400 1800 1400 1380 56-23-5
Group V (from section 602 of the CAA)
Methyl Chloroform (C2H3Cl3) 1,1,1-trichloroethane 5 0.12 0.1 0.1 0.1 0.12 146 144 110 140   144 71-55-6
Group VI (listed in the Accelerated Phaseout Final Rule)
Methyl Bromide (CH3Br) 0.7 0.51 0.7   0.6 0.38 5 5   5   5 74-83-9
Group VII (listed in the Accelerated Phaseout Final Rule)
CHFBr2     1   1 1              
HBFC-12B1(CHF2Br)         0.74 0.74              
CH2FBr     0.73   0.73 0.73              
C2HFBr4     0.3-0.8   0.3-0.8 0.3-0.8              
C2HF2Br3     0.5 - 1.8   0.5-1.8 0.5 - 1.8              
C2HF3Br2     0.4 - 1.6   0.4-1.6 0.4 - 1.6              
C2HF4Br     0.7 - 1.2   0.7-1.2 0.7 - 1.2              
C2H2FBr3     0.1-1.1   0.1 - 1.1 0.1 - 1.1              
C2H2F2Br2     0.2-1.5   0.2 - 1.5 0.2 - 1.5              
C2H2F3Br     0.7-1.6   0.7 - 1.6 0.7 - 1.6              
C2H3FBr2     0.1-1.7   0.1 - 1.7 0.1 - 1.7              
C2H3F2Br     0.2-1.1   0.2 - 1.1 0.2 - 1.1              
C2H4FBr     0.07-0.1   0.07-0.1 0.07- 0.1              
C3HFBr6     0.3-1.5   0.3 - 1.5 0.3-1.5              
C3HF2Br5     0.2-1.9   0.2 - 1.9 0.2-1.9              
C3HF3Br4     0.3-1.8   0.3 - 1.8 0.3-1.8              
C3HF4Br3     0.5-2.2   0.5 - 2.2 0.5-2.2              
C3HF5Br2     0.9-2.0   0.9 - 2.0 0.9-2.0              
C3HF6Br     0.7-3.3   0.7 - 3.3 0.7-3.3              
C3H2F2Br4     0.2-2.1   0.2 - 2.1 0.2-2.1              
C3H2F3Br3     0.2-5.6   0.2 - 5.6 0.2-5.6              
C3H2F4Br2     0.3-7.5   0.3 - 7.5 0.3-7.5              
C3H2F5Br     0.9-14   0.9 - 1.4 0.9-1.4              
C3H3FBr4     0.08-1.9   0.08-1.9 0.08-1.9              
C3H3F2Br3     0.1-3.1   0.1 - 3.1 0.1-3.1              
C3H3F3Br2     0.1-2.5   0.1 - 2.5 0.1-2.5              
C3H3F4Br     0.3-4.4   0.3 - 4.4 0.3-4.4              
C3H4FBr3     0.03-0.3   0.03-0.3 0.03-0.3              
C3H4F2Br2     0.1-1.0   0.1 - 1.0 0.1-1.0              
C3H4F3Br     0.07-0.8   0.07-0.8 0.07-0.8              
C3H5FBr2     0.04-0.4   0.04-0.4 0.04-0.4              
C3H5F2Br     0.07-0.8   0.07-0.8 0.07-0.8              
C3H6FBr     0.02-0.7   0.02-0.7 0.02-0.7              
Group VIII (from the Chlorobromomethane Phaseout Final Rule)
CH2BrCl Chlorobromomethane 0.37   0.12 0.12 0.12                
Why are there five values given for the ODPs and six values given for the GWPs?
The numbers in the “ODP1” column are from Table 1-5 of The Scientific Assessment of Ozone Depletion, 2002, a report of the World Meteorological Association’s Global Ozone Research and Monitoring Project. The ODPs in the “ODP1” column that were not in Table 1-5 of the 2002 report have not been updated since 1998 and are from The Scientific Assessment of Ozone Depletion, 1998. The “ODP2” column numbers are from the Montreal Protocol. Some numbers have been updated as per amendments to the protocol. The “ODP3” column numbers are from 40 CFR Part 82, stratospheric ozone protection regulations required by title VI of the Clean Air Act amendments. The “ODP4” numbers come from an amendment to 40 CFR Part 82 as amended at 68 FR 42892, July 18, 2003. Data in the “ODP5” column come from WMO’s Scientific Assessment of Ozone Depletion: 2006. ODP values listed are semi-empirical and can be found in Table 8-1 of the document.
All GWP values represent global warming potential over a 100-year time horizon. The numbers in the “GWP1” column are from Table 1-6 of The Scientific Assessment of Ozone Depletion, 2002, a report of the World Meteorological Association’s Global Ozone Research and Monitoring Project. The GWPs in the “GWP1” column that were not provided Table 1-6 of the 2002 report have not been updated since 1998 and are from The Scientific Assessment of Ozone Depletion, 1998. “GWP2” column numbers are from the Intergovernmental Panel on Climate Change (IPCC Exit EPA Disclaimer) Second Assessment Report: Climate Change 1995, “GWP3” column numbers are from the IPCC Third Assessment Report: Climate Change 2001, and “GWP4” column numbers are from 40 CFR Part 82, stratospheric ozone protection regulations required by title VI of the Clean Air Act amendments. The data in the “GWP5” column come from the IPCC Special Report on Safeguarding the Ozone Layer and the Global Climate System: Issues related to Hydrofluorocarbons and Perfluorocarbons (“SROC”). The values listed are for direct radiative forcing and can be found in Table 2.7 in the document. The numbers in the “GWP6” column come from the WMO’s Scientific Assessment of Ozone Depletion: 2006. The values listed are for direct radiative forcing and can be found in Table 8-2 of the document.

References

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