In a proposed rule published in the Federal Register, EPA proposes to establish chemical-specific and default global warming potentials (GWPs) for fluorinated greenhouse gases (GHGs) and fluorinated heat transfer fluids (HTFs) that are reported to the Greenhouse Gas Reporting Program (GHGRP) but that do not currently have GWPs under the Program. This would ensure that the atmospheric impacts of all fluorinated GHGs and HTFs are reflected in calculations and reporting under the GHGRP.
Comments must be received on or before September 2, 2014, unless a hearing is requested. If a hearing is requested, comments must be received on or before September 15, 2014. The EPA will provide further information about the hearing on the Greenhouse Gas Reporting Program Web site, http://www.epa.gov/climatechange/emissions/ghgrulemaking.html if a hearing is requested.
Table 2 – CHEMICAL-SPECIFIC GWPS PROPOSED FOR ADDITION TO TABLE A-1
| Common or trade name |
Chemical name(s) | CAS No. | AR5 GWP (100 year) |
| HFC-227ca | 1,1,1,2,2,3,3-Heptafluoropropane | 2252–84–8 | 2640 |
| HFC-245cb | 1,1,1,2,2-Pentafluoropropane | 1814–88–6 | 4620 |
| HFC-245ea | 1,1,2,3,3-Pentafluoropropane | 24270–66–4 | 235 |
| HFC-245eb | 1,1,1,2,3-Pentafluoropropane | 431–31–2 | 290 |
| HFC-263fb | 1,1,1-Trifluoropropane | 421–07–8 | 76 |
| HFC-272ca | 2,2-Difluoropropane | 420–45–1 | 144 |
| HFC-329p | 1,1,1,2,2,3,3,4,4-Nonafluorobutane | 375–17–7 | 2360 |
| PFC-6-1-12 | Hexadecafluoroheptane | 335–57–9 | 7820 |
| PFC-7-1-18 | Octadecafluorooctane Perfluorodecalin (cis) Perfluorodecalin (trans) |
307–34–6 60433–11–6 60433–12–7 |
7620 7240 6290 |
| HFE-263m1; R-E-143a |
1,1,2,2-Tetrafluoro-1-(trifluoromethoxy)ethane | 690–22–2 | 29 |
| HFE-365mcf2 | 1-Ethoxy-1,1,2,2,2-pentafluoroethane | 22052–81–9 | 58 |
| HG’-01 | 1,1,2,2-Tetrafluoro-1,2-dimethoxyethane | 73287–23–7 | 222 |
| HG’-02 | 1,1,2,2-Tetrafluoro-1-methoxy-2-(1,1,2,2- tetrafluoro-2-methoxyethoxy)ethane |
485399–46–0 | 236 |
| HG’-03 | 3,3,4,4,6,6,7,7,9,9,10,10-Dodecafluoro-2,5,8,11- tetraoxadodecane | 485399–48–2359–15–9 | 221 |
| HG’-03 | Difluoro(methoxy)methane | 359–15–9 | 144 |
| HG’-03 | 2-Chloro-1,1,2-trifluoro-1-methoxyethane | 425–87–6 | 122 |
| HG’-03 | 1-Ethoxy-1,1,2,2,3,3,3-heptafluoropropane | 22052–86–4 | 61 |
| HG’-03 | 2-Ethoxy-3,3,4,4,5-pentafluorotetrahydro-2,5-bis[1,2,2,2-tetrafluoro-1-(trifluoromethyl)ethyl]-furan | 920979–28–8 | 56 |
| HG’-03 | 1-Ethoxy-1,1,2,3,3,3-hexafluoropropane | 380–34–7 | 23 |
| HG’-03 | Fluoro(methoxy)methane | 460–22–0 | 13 |
| none | 1,1,2,2-Tetrafluoro-3-methoxy-propane; Methyl 2,2,3,3-tetrafluoropropyl ether. |
60598–17–6 | 0.49 |
| HCFE-235ca2; enflurane | 2-Chloro-1-(difluoromethoxy)-1,1,2- trifluoroethane | 13838–16–9 | 583 |
| HFE-236ca | 1-(Difluoromethoxy)-1,1,2,2-tetrafluoroethane … | 32778–11–3 | 4240 |
| HFE-329me3 | 1,1,1,2,3,3-Hexafluoro-3- (trifluoromethoxy)propane | 428454–68–6 | 4550 |
| HFE-347mmz1; Sevoflurane | 2-(Difluoromethoxy)-1,1,1,3,3,3- hexafluoropropane | 28523–86–6 | 216 |
| HFE-356mff2 | bis(2,2,2-trifluoroethyl) ether… | 333–36–8 | 17 |
| HG-03 | 1,1,3,3,4,4,6,6,7,7,9,9,10,10,12,12- Hexadecafluoro-2,5,8,11-tetraoxadodecane |
173350–37–3 | 2850 |
| HG-20 | (Difluoromethoxy)((difluoromethoxy) difluoromethoxy) difluoromethane |
249932–25–0 | 5300 |
| HG-21 | 1,1,3,3,5,5,7,7,8,8,10,10-Dodecafluoro-2,4,6,9- tetraoxadecane |
249932–26–1 | 3890 |
| HG-30 … | 1,1,3,3,5,5,7,7,9,9-Decafluoro-2,4,6,8- tetraoxanonane | 188690–77–9 | 7330 |
| HG-30 … | 1,1,1,2,2,3,3-Heptafluoro-3-(1,2,2,2-tetrafluoroethoxy)-propane. | 3330–15–2 | 6490 |
| HG-30 … | 1,1’-Oxybis[2-(difluoromethoxy)-1,1,2,2-tetrafluoroethane | 205367–61–9 | 4920 |
| HG-30 … | 1,1,3,3,4,4,6,6,7,7,9,9,10,10,12,12-hexadecafluoro-2,5,8,11-Tetraoxadodecane | 173350–37–3 | 4490 |
| HG-30 … | 1,1,3,3,4,4,6,6,7,7,9,9,10,10,12,12,13,13,15,15-eicosafluoro-2,5,8,11,14-Pentaoxapentadecane | 173350–38–4 | 3630 |
| HG-30 … | 1,1,2-Trifluoro-2-(trifluoromethoxy)-ethane | 84011–06–3 | 1240 |
| HG-30 … | 1,1,2,2-Tetrafluoro-1-(fluoromethoxy)ethane | 37031–31–5 | 871 |
| HG-30 … | Trifluoro (fluoromethoxy) methane | 2261–01–0 | 751 |
| HG-30 … | Difluoro(fluoromethoxy)methane | 461–63-2 | 617 |
| HG-30 … | Fluoro (fluoromethoxy) methane | 462–51–1 | 130 |
| HFC-1132a; VF2 | vinylidiene fluoride | 75–38–7 | 0.04 |
| HFC-1141; VF | vinyl fluoride | 75–02–5 | 0.02 |
| (E)-HFC-1225ye | (E)-1,2,3,3,3-Pentafluoroprop-1-ene | 5595–10–8 | 0.06 |
| (Z)-HFC-1225ye | (Z)-1,2,3,3,3-Pentafluoroprop-1-ene | 5528–43–8 | 0.22 |
| HFC-1234yf; HFO-1234yf | 2,3,3,3-Tetrafluoroprop-1-ene | 754–12–1 | 0.31 |
| HFC-1234ze(E) | (E)-1,3,3,3-Tetrafluoroprop-1-ene | 1645–83–6 | 0.97 |
| HFC-1234ze(Z) | (Z)-1,3,3,3-Tetrafluoroprop-1-ene | 29118–25–0 | 0.29 |
| HFC-1243zf; TF | trifluoro propene (TFP); 3,3,3-Trifluoroprop-1-ene | 677–21–4 | 0.12 |
| (Z)-HFC-1336 | (Z)-1,1,1,4,4,4-Hexafluorobut-2-ene | 692–49–9 | 1.58 |
| HFO–1345zfc | 3,3,4,4,4-Pentafluorobut-1-ene | 374–27–6 | 0.09 |
| Capstone 42-U | perfluorobutyl ethene (42-U); 3,3,4,4,5,5,6,6,6-Nonafluorohex-1-ene | 19430–93–4 | 0.16 |
| Capstone 62-U | perfluorohexyl ethene (62-U); 3,3,4,4,5,5,6,6,7,7,8,8,8-Tridecafluorooct-1-ene | 25291–17–2 | 0.11 |
| Capstone 82-U | perfluorooctyl ethene (82-U); 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10- Heptadecafluorodec-1-ene | 21652–58–4 | 0.09 |
| PFC-1114; TFE | tetrafluoroethylene (TFE); Perfluoroethene | 116–14–3 | 0.004 |
| PFC-1216; Dyneon HFP | hexafluoropropylene (HFP); Perfluoropropene | 116–15–4 | 0.05 |
| PFC C-1418 | Perfluorocyclopentene; Octafluorocyclopentene | 559–40–0 | 1.97 |
| PFC C-1418 | Perfluorobut-2-ene | 360–89–4 | 1.82 |
| PFC C-1418 | Perfluorobut-1-ene | 357–26–6 | 0.10 |
| PFC C-1418 | Perfluorobuta-1,3-diene | 685–63–2 | 0.003 |
| PMVE; HFE-216 | perfluoromethyl vinyl ether (PMVE) | 1187–93–5 | 0.17 |
| Fluoroxene | (2,2,2-Trifluoroethoxy) ethene | 406–90–6 | 0.05 |
| Novec 1230 | FK–5–1–12 Perfluoroketone; FK–5–1–12myy2; perfluoro(2-methyl-3-pentanone) | 756–13–8 | 0.1 |
| none | 3,3,3-Trifluoro-propanal | 460–40–2 | 0.01 |
| none | 3,3,4,4,5,5,6,6,7,7,7-Undecafluoroheptan-1-o | 185689–57–0 | 0.43 |
| none | 3,3,3-Trifluoropropan-1-ol | 2240–88–2 | 0.35 |
| none | 3,3,4,4,5,5,6,6,7,7,8,8,9,9,9-Pentadecafluorononan-1-ol | 755–02– | 0.33 |
| none | 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-Nonadecafluoroundecan-1-ol | 87017–97–8 | 0.19 |
| none | Trifluoroiodomethane | 2314–97–8 | 0.4(a) |
| none | Trifluoromethyl formate | 85358–65–2 | 588 |
| none | Perfluoroethyl formate | 313064–40–3 | 580 |
| none | 1,2,2,2-Tetrafluoroethyl formate | 481631–19–0 | 470 |
| none | Perfluorobutyl formate | 197218–56–7 | 392 |
| none | Perfluoropropyl formate | 271257–42–2 | 376 |
| none | 1,1,1,3,3,3-Hexafluoropropan-2-yl formate | 856766–70–6 | 333 |
| Halon 1202 | Dibromodifluoromethane | 75–61–6 | 231 |
| none | 1,1,1,3,3,3-Hexafluoropropan-2-ol | 920–66–1 | 182 |
| none | Methyl carbonofluoridate | 1538–06–3 | 95 |
| none | Methyl 2,2,2-trifluoroacetate | 431–47–0 | 52 |
| Halon-2311; Halothane | 2-Bromo-2-chloro-1,1,1-trifluoroethane | 151–67–7 | 41 |
| none | 2,2,3,3,4,4,4-Heptafluorobutan-1-ol | 375–01–9 | 34 |
| none | 2,2,2-Trifluoroethyl formate | 32042–38–9 | 33 |
| none | 1,1-Difluoroethyl 2,2,2-trifluoroacetate | 1344118–13–3 | 31 |
| none | Difluoromethyl 2,2,2-trifluoroacetate | 2024–86–4 | 27 |
| none | 1,1-Difluoroethyl carbonofluoridate | 1344118–11–1 | 27 |
| none | 2,2,2-Trifluoroethanol | 75–89–8 | 20 |
| none | 2,2,3,3,3-Pentafluoropropan-1-ol | 422–05–9 | 19 |
| none | 2,2,3,4,4,4-Hexafluoro-1-butanol | 382–31–0 | 17 |
| none | 3,3,3-Trifluoropropyl formate | 1344118–09–7 | 17 |
| none | 2,2,3,3,4,4,4-Heptafluoro-1-butanol | 375–01–9 | 16 |
| none | 2,2,3,3-Tetrafluoro-1-propanol | 76–37–9 | 13 |
| none | 2,2,2-Trifluoroethyl 2,2,2-trifluoroacetate | 407–38–5 | 7 |
| none | Methyl 2,2-difluoroacetate | 433–53–4 | 3 |
| none | 2,2-Difluoroethanol | 359–13–7 | 3 |
| none | Perfluoroethyl acetate | 343269–97–6 | 2.1 |
| none | Trifluoromethyl acetate | 74123–20–9 | 2.0 |
| none | Perfluoropropyl acetate | 1344118–10–0 | 1.8 |
| none | Perfluorobutyl acetate | 209597–28–4 | 1.6 |
| none | Ethyl 2,2,2-trifluoroacetate | 383–63–1 | 1.3 |
| none | 2-Fluoroethanol | 371–62–0 | 1.1 |
| none | 4,4,4-Trifluorobutan-1-ol | 461–18–7 | 0.05 |
Print 
PDF