|
The most commonly encountered HCFCs are -22, -123, -124, -141b
and -142b (highlighted in bold below).
|
Substance
|
Chemical name |
Chemical formula
|
|
|
| HCFC‑21** |
Dichlorofluoromethane |
CHFCl2 |
0.04
|
|
| HCFC‑22** |
Monochlorodifluoromethane |
CHF2Cl |
0.055
|
1780
|
| HCFC‑31 |
Monochlorofluoromethane |
CH2FCl |
0.02
|
|
| HCFC‑121 |
Tetrachlorofluoroethane |
C2HFCl4 |
0.01-0.04
|
|
| HCFC‑122 |
Trichlorodifluoroethane |
C2HF2Cl3 |
0.02-0.08
|
|
| HCFC‑123** |
Dichlorotrifluoroethane |
C2HF3Cl2 |
0.02-0.06
|
76
|
| HCFC‑124** |
Monochlorotetrafluoroethane |
C2HF4Cl |
0.02-0.04
|
599
|
| HCFC‑131 |
Trichlorofluoroethane
|
C2H2FCl3 |
0.007-0.05
|
|
| HCFC‑132 |
Dichlorodifluoroethane |
C2H2F2Cl2 |
0.008-0.05
|
|
| HCFC‑133 |
Chlorotrifluoroethane |
C2H2F3Cl |
0.02-0.06
|
|
| HCFC‑141 |
Dichlorofluoroethane |
C2H3FCl2 |
0.005-0.07
|
|
| HCFC‑141b** |
Dichlorofluoroethane |
CH3CFCl2 |
0.11
|
713
|
| HCFC‑142 |
Chlorodifluoroethane |
C2H3F2Cl |
0.008-0.07
|
|
| HCFC‑142b** |
Chlorodifluoroethane |
CH3CF2Cl |
0.065
|
2270
|
| HCFC‑151 |
Chlorofluoroethane |
C2H4FCl |
0.003-0.005
|
|
| HCFC‑221 |
Hexachlorofluoropropane |
C3HFCl6 |
0.015-0.07
|
|
| HCFC‑222 |
Pentachlorodifluoropropane |
C3HF2Cl5 |
0.01-0.09
|
|
| HCFC‑223 |
Tetrachlorotrifluoropropane |
C3HF3Cl4 |
0.01-0.08
|
|
| HCFC‑224 |
Trichlorotetrafluoropropane |
C3HF4Cl3 |
0.01-0.09
|
|
| HCFC‑225 |
Dichloropentafluoropropane |
C3HF5Cl2 |
0.02-0.07
|
|
| HCFC‑225ca** |
Dichloropentafluoropropane |
CF3CF2CHCl2 |
0.025
|
120
|
| HCFC‑225cb** |
Dichloropentafluoropropane |
CF2ClCF2CHClF |
0.033
|
586
|
| HCFC‑226 |
Monochlorohexafluoropropane |
C3HF6Cl |
0.02-0.10
|
|
| HCFC‑231 |
Pentachlorofluoropropane |
C3H2FCl5 |
0.05-0.09
|
|
| HCFC‑232 |
Tetrachlorodifluoropropane |
C3H2F2Cl4 |
0.008-0.10
|
|
| HCFC‑233 |
Trichlorotrifluoropropane |
C3H2F3Cl3 |
0.007-0.23
|
|
| HCFC‑234 |
Dichlorotetrafluoropropane |
C3H2F4Cl2 |
0.01-0.28
|
|
| HCFC‑235 |
Monochloropentafluoropropane |
C3H2F5Cl |
0.03-0.52
|
|
| HCFC‑241 |
Tetrachlorofluoropropane |
C3H3FCl4 |
0.004-0.09
|
|
| HCFC‑242 |
Trichlorodifluoropropane |
C3H3F2Cl3 |
0.005-0.13
|
|
| HCFC‑243 |
Dichlorotrifluoropropane |
C3H3F3Cl2 |
0.007-0.12
|
|
| HCFC‑244 |
Monochlorotetrafluoropropane |
C3H3F4Cl |
0.009-0.14
|
|
| HCFC‑251 |
Monochlorotetrafluoropropane |
C3H4FCl3 |
0.001-0.01
|
|
| HCFC‑252 |
Dichlorodifluoropropane |
C3H4F2Cl2 |
0.005-0.04
|
|
| HCFC‑253 |
Monochlorotrifluoropropane |
C3H4F3Cl |
0.003-0.03
|
|
| HCFC‑261 |
Dichlorofluoropropane |
C3H5FCl2 |
0.002-0.02
|
|
| HCFC‑262 |
Monochlorodifluoropropane |
C3H5F2Cl |
0.002-0.02
|
|
| HCFC‑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, IPCC
Special Report on Safeguarding the Ozone Layer and the Global Climate
System - Issues related to Hydrofluorocarbons and Perfluorocarbons,
Table 2.6, page 30. GWP values represent direct radiative forcing.
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