Part A – Certain halocarbons with an ozone depleting potential (ODP) and a global warming potential (GWP)Category I – Chlorofluorocarbons (CFC)Type | Chemical name | Crude chemical formula | CAS No.1 | ODP2 | GWP3 |
CFC-11 | trichlorofluoromethane | CCl3F | 75-69-4 | 1.0 | 4,750 |
CFC-12 | dichlorodifluoromethane | CCl2F2 | 75-71-8 | 1.0 | 10,900 |
CFC-13 | chlorotrifluoromethane | CF3Cl | 75-72-9 | 1.0 | 14,400 |
CFC-113 | 1,1,2-trichloro-1,2,2 trifluoroethane | CCl2FCClF2 | 76-13-1 | 0.8 | 6,130 |
CFC-114 | 1,2-dichloro-1,1,2,2 tetrafluoroethane | CClF2CClF2 | 76-14-2 | 1.0 | 10,000 |
CFC-115 | 1-chloro-1,1,2,2,2-pentafluoroethane | CClF2CF3 | 76-15-3 | 0.6 | 7,370 |
CFC-500 | dichlorodifluoromethane (CFC-12) 73.8% + 1,1‑difluoroethane (HFC-152a) 26.2% | CCl2F2+CH3CHF2 | ----- | 0.7 | ----- |
CFC-502 | chlorodifluoromethane (HCFC-22) 48.8% + 1‑chloro-1,1,2,2,2-pentafluoroethane (CFC-115) 51.2% | CHF2Cl + CClF2CF3 | ----- | 0.3 | ----- |
CFC-503 | trifluoromethane (HFC‑23) 40.1% + chlorotrifluoromethane (CFC-13) 59.9% | CHF3+CF3Cl | ----- | 0.6 | ----- |
Category II – Bromofluorocarbons (halons)
Type | Chemical name | Crude chemical formula | CAS No.1 | ODP2 | GWP3 |
Halon 1211 | bromochlorodifluoromethane | CBrClF2 | 353-59-3 | 3 | 1,890 |
Halon 1301 | bromotrifluoromethane | CBrF3 | 75-63-8 | 10 | 7,140 |
Halon 2402 | 1,2-dibromo-1, 1, 2,2-tetrafluoroethane | CF2BrCBrF2 | 124-73-2 | 6 | 1,640 |
Category III – Bromocarbons
Type | Chemical name | Crude chemical formula | CAS No.1 | ODP2 | GWP3 |
n-Propyl bromide | 1-bromopropane | CH2BrCH2CH3 | 106-94-5 | 0.0184 | 0,314 |
Methyl bromide | methyl bromide | CH3Br | 74-83-9 | 0.6 | 5 |
Category IV – Chlorocarbons
Type | Chemical name | Crude chemical formula | CAS No.1 | ODP2 | GWP3 |
Methylchloroform | 1, 1,1-trichloroethane | CH3CCl3 | 71-55-6 | 0.1 | 146 |
Carbon tetrachloride | tetrachloromethane | CCl4 | 56-23-5 | 1.1 | 1,400 |
Category V – Hydrochlorofluorocarbons (HCFC)
Subcategory A – Saturated hydrochlorofluorocarbons (HCFC)
Type | Chemical name | Crude chemical formula | CAS No.1 | ODP2 | GWP3 |
HCFC-21 | dichlorofluoromethane | CHFCl2 | 75-43-4 | 0.04 | 151 |
HCFC-22 | chlorodifluoromethane | CHF2Cl | 75-45-6 | 0.055 | 1,810 |
HCFC-31 | chlorofluoromethane | CH2FCl | 593-70-4 | 0.02 | -------- |
HCFC-123 | 2,2-dichloro-1, 1,1‑trifluoroethane | CF3CHCl2 | 306-83-2 | 0.02 | 77 |
HCFC-124 | 2-chloro-1, 1, 1,2‑tetrafluoroethane | CF3CHClF | 2837-89-0 | 0.022 | 609 |
HCFC-141b | 1,1-dichloro-1-fluoroethane | CH3CCl2F | 1717-00-6 | 0.11 | 725 |
HCFC-142b | 1-chloro-1,1difluoroethane | CH3CClF2 | 75-68-3 | 0.065 | 2,310 |
HCFC-225ca | 1,1-dichloro-2, 2, 3, 3,3-pentafluoropropane | CF3CF2CHCl2 | 422-56-0 | 0.025 | 122 |
HCFC-225cb | 1,3-dichloro-1, 2, 2, 3,3-pentafluoropropane | CF2ClCF2CHClF | 507-55-1 | 0.033 | 595 |
Subcategory B – Unsaturated hydrochlorofluorocarbons (HCFO)
Type | Chemical name | Crude chemical formula | CAS No.1 | ODP5 | GWP6 |
HCFO-1233zd(E) | trans-1-chloro-3,3,3-trifluoroprop-1-ene | C3H2ClF3 | 102687-65-0 | ≤0.0004 | 1 |
Part B – Certain halocarbons with a global warming potential exclusively
Category I – Hydrofluorocarbons (HFC)
Subcategory A – Saturated hydrofluorocarbons (HFC)
Type | Chemical name | Crude chemical formula | CAS No.1 | GWP3 |
HFC-23 | trifluoromethane | CHF3 | 75-46-7 | 14,800 |
HFC-32 | difluoromethane | CH2F2 | 75-10-5 | 675 |
HFC-41 | fluoromethane | CH3F | 593-53-3 | 92 |
HFC-125 | pentafluoroethane | CHF2CF3 | 354-33-6 | 3,500 |
HFC-134 | 1, 1, 2,2-tetrafluoroethane | CHF2CHF2 | 359-35-3 | 1,100 |
HFC-134a | 1, 1, 1,2-tetrafluoroethane | CH2FCF3 | 811-97-2 | 1,430 |
HFC-143 | 1, 1,2-trifluoroethane | CH2FCHF2 | 430-66-0 | 353 |
HFC-143a | 1, 1,1-trifluoroethane | CH3CF3 | 420-46-2 | 4,470 |
HFC-152 | 1,2-difluoroethane | CH2FCH2F | 624-72-6 | 53 |
HFC-152a | 1,1-difluoroethane | CH3CHF2 | 75-37-6 | 124 |
HFC-161 | fluoroethane | CH3CH2F | 353-36-6 | 12 |
HFC-227ea | 1, 1, 1, 2, 3, 3,3-heptafluoropropane | CF3CHFCF3 | 431-89-0 | 3,220 |
HFC-236cb | 1, 1, 1, 2, 2,3-hexafluoropropane | CH2FCF2CF3 | 677-56-5 | 1,340 |
HFC-236ea | 1, 1, 1, 2, 3,3-hexafluoropropane | CHF2CHFCF3 | 431-63-0 | 1,370 |
HFC-236fa | 1, 1, 1, 3, 3,3-hexafluoropropane | CF3CH2CF3 | 690-39-1 | 9,810 |
HFC-245ca | 1, 1, 2, 2,3-pentafluoropropane | CH2FCF2CHF2 | 679-86-7 | 693 |
HFC-245fa | 1, 1, 1, 3,3-pentafluoropropane | CHF2CH2CF3 | 460-73-1 | 1,030 |
HFC-365mfc | 1, 1, 1, 3,3-pentafluorobutane | CH3CF2CH2CF3 | 406-58-6 | 794 |
HFC-43-10mee | 1, 1, 1, 2, 2, 3, 4, 5, 5,5-decafluoropentane | CF3CHFCHFCF2CF3 | 138495-42-8 | 1,640 |
Subcategory B – Unsaturated hydrofluorocarbons (HFO)
Type | Chemical name | Crude chemical formula | CAS No.1 | GWP6 |
HFO-1234yf | 2, 3, 3,3-tetrafluoropropene | CF3CF=CH2 | 754-12-1 | <1 |
HFO-1234ze | trans-1, 3, 3,3-tetrafluoropropene | CHF=CHCF3 | 29118-24-9 | <1 |
Category II – Perfluorocarbons (PFC)
Type | Chemical name | Crude chemical formula | CAS No.1 | GWP3 |
PFC-14 | tetrafluoromethane | CF4 | 75-73-0 | 7,390 |
PFC-116 | hexafluoroethane | C2F6 | 76-16-4 | 12,200 |
PFC-218 | octafluoropropane | C3F8 | 76-19-7 | 8,830 |
PFC-318 | octafluorocyclobutane | C4F8 | 115-25-3 | 10,300 |
PFC-31-10 | decafluorobutane | C4F10 | 355-25-9 | 8,860 |
PFC-41-12 | dodecafluoropentane | C5F12 | 678-26-2 | 9,160 |
PFC-51-14 | tetradecafluorohexane | C6F14 | 355-42-0 | 9,300 |
1The numbers entered in respect of the substances listed in this Schedule correspond to the identification code assigned by the Chemical Abstract Services division of the American Chemical Society.
2Handbook for the Montreal Protocol on Substances that Deplete the Ozone Layer, twelfth edition, published by the United Nations Environment Programme in 2018.
3Fourth Assessment Report adopted by the Intergovernmental Panel on Climate Change in 2007.
4USA Federal Register 40 CFR part 82: Protection of Stratospheric Ozone: Listing of Substitutes for Ozone-Depleting Substances-n-Propyl Bromide/Volume 68/No. 106/ June 3, 2003, p. 33303.
5Scientific Assessment of Ozone Depletion: Global Ozone Research and Monitoring Project–Report No. 58, published by the World Meteorological Organization in 2018.
6Fifth Assessment Report adopted by the Intergovernmental Panel on Climate Change in 2013.