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HCFC Help Centre HCFCs controlled under the Montreal Protocol

The most commonly encountered HCFCs are -22, -123, -124, -141b and -142b (highlighted in bold below).

To see a full list of trade names of products containing HCFCs, click here.

To see a list of refrigerant blends that contain HCFCs, click here.

Substance

ASHRAE
Code

Chemical name
Chemical formula

Lifetime (years)

HCFC‑21** R-21 Dichlorofluoromethane CHFCl2
0.04
151
1.7
HCFC‑22** R-22 Monochlorodifluoromethane CHF2Cl
0.055
1810
12.0
HCFC‑31 R-31 Monochlorofluoromethane CH2FCl
0.02
HCFC‑121 R-121 Tetrachlorofluoroethane C2HFCl4
0.01-0.04
HCFC‑122 R-122 Trichlorodifluoroethane C2HF2Cl3
0.02-0.08
HCFC‑123** R-123 Dichlorotrifluoroethane C2HF3Cl2
0.02-0.06
77
1.3
HCFC‑124** R-124 Monochlorotetrafluoroethane C2HF4Cl
0.02-0.04
609
5.8
HCFC‑131 R-131 Trichlorofluoroethane C2H2FCl3
0.007-0.05
HCFC‑132 R-132 Dichlorodifluoroethane C2H2F2Cl2
0.008-0.05
HCFC‑133 R-133 Chlorotrifluoroethane C2H2F3Cl
0.02-0.06
HCFC‑141 R-141 Dichlorofluoroethane C2H3FCl2
0.005-0.07
HCFC‑141b** R-141b Dichlorofluoroethane CH3CFCl2
0.11
725
9.3
HCFC‑142 R-142 Chlorodifluoroethane C2H3F2Cl
0.008-0.07
HCFC‑142b** R-142b Chlorodifluoroethane CH3CF2Cl
0.065
2310
17.9
HCFC‑151 R-151 Chlorofluoroethane C2H4FCl
0.003-0.005
HCFC‑221 R-221 Hexachlorofluoropropane C3HFCl6
0.015-0.07
HCFC‑222 R-222 Pentachlorodifluoropropane C3HF2Cl5
0.01-0.09
HCFC‑223 R-223 Tetrachlorotrifluoropropane C3HF3Cl4
0.01-0.08
HCFC‑224 R-224 Trichlorotetrafluoropropane C3HF4Cl3
0.01-0.09
HCFC‑225 R-225 Dichloropentafluoropropane C3HF5Cl2
0.02-0.07
HCFC‑225ca** R-225ca Dichloropentafluoropropane CF3CF2CHCl2
0.025
122
1.9
HCFC‑225cb** R-225cb Dichloropentafluoropropane CF2ClCF2CHClF
0.033
595
5.8
HCFC‑226 R-226 Monochlorohexafluoropropane C3HF6Cl
0.02-0.10
HCFC‑231 R-231 Pentachlorofluoropropane C3H2FCl5
0.05-0.09
HCFC‑232 R-232 Tetrachlorodifluoropropane C3H2F2Cl4
0.008-0.10
HCFC‑233 R-233 Trichlorotrifluoropropane C3H2F3Cl3
0.007-0.23
HCFC‑234 R-234 Dichlorotetrafluoropropane C3H2F4Cl2
0.01-0.28
HCFC‑235 R-235 Monochloropentafluoropropane C3H2F5Cl
0.03-0.52
HCFC‑241 R-241 Tetrachlorofluoropropane C3H3FCl4
0.004-0.09
HCFC‑242 R-242 Trichlorodifluoropropane C3H3F2Cl3
0.005-0.13
HCFC‑243 R-243 Dichlorotrifluoropropane C3H3F3Cl2
0.007-0.12
HCFC‑244 R-244 Monochlorotetrafluoropropane C3H3F4Cl
0.009-0.14
HCFC‑251 R-251 Monochlorotetrafluoropropane C3H4FCl3
0.001-0.01
HCFC‑252 R-252 Dichlorodifluoropropane C3H4F2Cl2
0.005-0.04
HCFC‑253 R-253 Monochlorotrifluoropropane C3H4F3Cl
0.003-0.03
HCFC‑261 R-261 Dichlorofluoropropane C3H5FCl2
0.002-0.02
HCFC‑262 R-262 Monochlorodifluoropropane C3H5F2Cl
0.002-0.02
HCFC‑271 R-271 Monochlorofluoropropane C3H6FCl
0.001-0.03

* Where a range of ODPs is indicated, the highest value in that range shall be used for the purposes of the Protocol. The ODPs listed as a single value have been determined from calculations based on laboratory measurements. Those listed as a range are based on estimates and are less certain. The range pertains to an isomeric group. The upper value is the estimate of the ODP of the isomer with the highest ODP, and the lower value is the estimate of the ODP of the isomer with the lowest ODP.

** Identifies the most commercially viable substances with ODP values listed against them to be used for the purposes of the Protocol.

Source: ODP values - Handbook for the Montreal Protocol on Substances that Deplete the Ozone Layer Seventh edition (2006), Ozone Secretariat, " Annex C, Controlled Substances". GWP values, WMO (World Meteorological Organization), Scientific Assessment of Ozone Depletion: 2006, Global Ozone Research and Monitoring Project—Report No. 50. GWP values represent direct radiative forcing using a 100 year time horizon. Atmospheric lifetime values, WMO Scientific Assessment of Ozone Depletion: 2006, Global Ozone Research and Monitoring Project—Report No. 50.

  
© UNEP DTIE 2007 | updated 2-apr-09