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Class I Ozone-depleting Substances

Chemical Name Lifetime, in years ODP3 (WMO 2006) ODP2 (40 CFR 82) ODP1 (Montreal Protocol) GWP5 (WMO 2006) GWP4 (SROC) GWP3 (40 CFR 82) GWP2 (TAR) GWP1 (WMO 2002) CAS Number
Group I (from section 602 of the CAA)
CFC-11 (CCl3F) Trichlorofluoromethane 45 1 1 1 4750 4680 4000 4600 4680 75-69-4
CFC-12 (CCl2F2) Dichlorodifluoromethane 100 1 1 1 10890 10720 8500 10600 10720 75-71-8
CFC-113 (C2F3Cl3) 1,1,2-Trichlorotrifluoroethane 85 1 0.8 0.8 6130 6030 5000 6000 6030 76-13-1
CFC-114 (C2F4Cl2) Dichlorotetrafluoroethane 300 1 1 1 10040 9300 9800 9880 76-14-2
CFC-115 (C2F5Cl) Monochloropentafluoroethane 1700 0.44 0.6 0.6 7370 9300 7200 7250 76-15-3
Group II (from section 602 of the CAA)
Halon 1211 (CF2ClBr) Bromochlorodifluoromethane 16 7.1 3 3 1890 1860 1300 1860 353-59-3
Halon 1301 (CF3Br) Bromotrifluoromethane 65 16 10 10 7140 7030 6900 7030 75-63-8
Halon 2402 (C2F4Br2) Dibromotetrafluoroethane 20 11.5 6 6 1640 1620 1620 124-73-2
Group III (from section 602 of the CAA)
CFC-13 (CF3Cl) Chlorotrifluoromethane 640 1 1 14420 11700 14000 14190 75-72-9
CFC-111 (C2FCl5) Pentachlorofluoroethane 1 1 354-56-3
CFC-112 (C2F2Cl4) Tetrachlorodifluoroethane 1 1 76-12-0
CFC-211 (C3FCl7) Heptachlorofluoropropane 1 1 422-78-6
CFC-212 (C3F2Cl6) Hexachlorodifluoropropane 1 1 3182-26-1
CFC-213 (C3F3Cl5) Pentachlorotrifluoropropane 1 1 2354-06-5
CFC-214 (C3F4Cl4) Tetrachlorotetrafluoropropane 1 1 29255-31-0
CFC-215 (C3F5Cl3) Trichloropentafluoropropane 1 1 4259-43-2
CFC-216 (C3F6Cl2) Dichlorohexafluoropropane 1 1 661-97-2
CFC-217 (C3F7Cl) Chloroheptafluoropropane 1 1 422-86-6
Group IV (from section 602 of the CAA)
CCl4 Carbon tetrachloride 26 0.73 1.1 1.1 1400 1380 1400 1800 1380 56-23-5
Group V (from section 602 of the CAA)
Methyl Chloroform (C2H3Cl3) 1,1,1-trichloroethane 5 0.12 0.1 0.1 146 144 110 140 144 71-55-6
Group VI (listed in the Accelerated Phaseout Final Rule)
Methyl Bromide (CH3Br) 0.7 0.51 0.7 0.6 5 5 5 5 74-83-9
Group VII (listed in the Accelerated Phaseout Final Rule)
CHFBr2 1 1
HBFC-12B1(CHF2Br) 0.74
CH2FBr 0.73 0.73
C2HFBr4 0.3-0.8 0.3-0.8
C2HF2Br3 0.5 - 1.8 0.5-1.8
C2HF3Br2 0.4 - 1.6 0.4-1.6
C2HF4Br 0.7 - 1.2 0.7-1.2
C2H2FBr3 0.1-1.1 0.1 - 1.1
C2H2F2Br2 0.2-1.5 0.2 - 1.5
C2H2F3Br 0.7-1.6 0.7 - 1.6
C2H3FBr2 0.1-1.7 0.1 - 1.7
C2H3F2Br 0.2-1.1 0.2 - 1.1
C2H4FBr 0.07-0.1 0.07-0.1
C3HFBr6 0.3-1.5 0.3 - 1.5
C3HF2Br5 0.2-1.9 0.2 - 1.9
C3HF3Br4 0.3-1.8 0.3 - 1.8
C3HF4Br3 0.5-2.2 0.5 - 2.2
C3HF5Br2 0.9-2.0 0.9 - 2.0
C3HF6Br 0.7-3.3 0.7 - 3.3
C3H2FBr5       0.1 - 1.9            
C3H2F2Br4 0.2-2.1 0.2 - 2.1
C3H2F3Br3 0.2-5.6 0.2 - 5.6
C3H2F4Br2 0.3-7.5 0.3 - 7.5
C3H2F5Br 0.9-14 0.9 - 1.4
C3H3FBr4 0.08-1.9 0.08-1.9
C3H3F2Br3 0.1-3.1 0.1 - 3.1
C3H3F3Br2 0.1-2.5 0.1 - 2.5
C3H3F4Br 0.3-4.4 0.3 - 4.4
C3H4FBr3 0.03-0.3 0.03-0.3
C3H4F2Br2 0.1-1.0 0.1 - 1.0
C3H4F3Br 0.07-0.8 0.07-0.8
C3H5FBr2 0.04-0.4 0.04-0.4
C3H5F2Br 0.07-0.8 0.07-0.8
C3H6FBr 0.02-0.7 0.02-0.7
Group VIII (from the Chlorobromomethane Phaseout Final Rule)
CH2BrCl Chlorobromomethane 0.37 0.12 0.12
Why are there multiple values given for the ODPs and GWPs?
The numbers in the “ODP1” column are from the Montreal Protocol. Some numbers have been updated as per amendments to the protocol. The “ODP2” column numbers are from the stratospheric ozone protection regulations at 40 CFR Part 82, as required by Title VI of the Clean Air Act amendments. These numbers include the amendments of July 18, 2003 (68 FR 42892). Data in the “ODP3” column come from WMO’sScientific 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 Third Assessment Report: Climate Change 2001, and “GWP3” 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 “GWP4” 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 “GWP5” column come from the WMO’sScientific 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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