40 C.F.R. § 98 app Table A-1 to Subpart A of Part 98

Current through September 30, 2024
Appendix Table A-1 to Subpart A of Part 98 - Global Warming Potentials

[100-Year Time Horizon]

NameCAS No. Chemical formulaGlobal
warming
potential
(100 yr.)
Chemical-Specific GWPs
Carbon dioxide124-38-9CO21
Methane74-82-8CH4a 25
Nitrous oxide10024-97-2N2Oa 298
Fully Fluorinated GHGs
Sulfur hexafluoride2551-62-4SF6a 22,800
Trifluoromethyl sulphur pentafluoride373-80-8SF5CF317,700
Nitrogen trifluoride7783-54-2NF317,200
PFC-14 (Perfluoromethane)75-73-0CF4a 7,390
PFC-116 (Perfluoroethane)76-16-4C2F6a 12,200
PFC-218 (Perfluoropropane)76-19-7C3F8a 8,830
Perfluorocyclopropane931-91-9C-C3F617,340
PFC-3-1-10 (Perfluorobutane)355-25-9C4F10a 8,860
PFC-318 (Perfluorocyclobutane)115-25-3C-C4F8a 10,300
PFC-4-1-12 (Perfluoropentane)678-26-2C5F12a 9,160
PFC-5-1-14 (Perfluorohexane, FC-72)355-42-0C6F14a 9,300
PFC-6-1-12335-57-9C7F16; CF3(CF2)5CF3b 7,820
PFC-7-1-18307-34-6C8F18; CF3(CF2)6CF3b 7,620
PFC-9-1-18306-94-5C10F187,500
PFPMIE (HT-70)NA CF3OCF(CF3)CF2OCF2OCF 310,300
Perfluorodecalin (cis)60433-11-6Z-C10F18b 7,236
Perfluorodecalin (trans)60433-12-7E-C10F18b 6,288
Saturated Hydrofluorocarbons (HFCs) With Two or Fewer Carbon-Hydrogen Bonds
HFC-2375-46-7CHF3a 14,800
HFC-3275-10-5CH2F2a 675
HFC-125354-33-6C2HF5a 3,500
HFC-134359-35-3C2H2F4a 1,100
HFC-134a811-97-2CH2FCF3a 1,430
HFC-227ca2252-84-8CF3CF2CHF2b 2640
HFC-227ea431-89-0C3HF7a 3,220
HFC-236cb677-56-5CH2FCF2CF31,340
HFC-236ea431-63-0CHF2CHFCF31,370
HFC-236fa690-39-1C3H2F6a 9,810
HFC-329p375-17-7 CHF2CF2CF2CF3b 2360
HFC-43-10mee138495-42-8 CF3CFHCFHCF2CF3a 1,640
Saturated Hydrofluorocarbons (HFCs) With Three or More Carbon-Hydrogen Bonds
HFC-41593-53-3CH3Fa 92
HFC-143430-66-0C2H3F3a 353
HFC-143a420-46-2C2H3F3a 4,470
HFC-152624-72-6CH2FCH2F53
HFC-152a75-37-6CH3CHF2a 124
HFC-161353-36-6CH3CH2F12
HFC-245ca679-86-7C3H3F5a 693
HFC-245cb1814-88-6CF3CF2CH3b 4620
HFC-245ea24270-66-4CHF2CHFCHF2b 235
HFC-245eb431-31-2CH2FCHFCF3b 290
HFC-245fa460-73-1CHF2CH2CF31,030
HFC-263fb421-07-8CH3CH2CF3b 76
HFC-272ca420-45-1CH3CF2CH3b 144
HFC-365mfc406-58-6 CH3CF2CH2CF3794
Saturated Hydrofluoroethers (HFEs) and Hydrochlorofluoroethers (HCFEs) With One Carbon-Hydrogen Bond
HFE-1253822-68-2CHF2OCF314,900
HFE-227ea2356-62-9CF3CHFOCF31,540
HFE-329mcc2134769-21-4 CF3CF2OCF2CHF2919
HFE-329me3428454-68-6 CF3CFHCF2OCF3b 4,550
1,1,1,2,2,3,3-Heptafluoro-3-(1,2,2,2-tetrafluoroethoxy)-propane3330-15-2 CF3CF2CF2OCHFCF3b 6,490
Saturated HFEs and HCFEs With Two Carbon-Hydrogen Bonds
HFE-134 (HG-00)1691-17-4CHF2OCHF26,320
HFE-236ca32778-11-3 CHF2OCF2CHF2b 4,240
HFE-236ca12 (HG-10)78522-47-1 CHF2OCF2OCHF22,800
HFE-236ea2 (Desflurane)57041-67-5CHF2OCHFCF3989
HFE-236fa20193-67-3CF3CH2OCF3487
HFE-338mcf2156053-88-2 CF3CF2OCH2CF3552
HFE-338mmz126103-08-2 CHF2OCH(CF3)2380
HFE-338pcc13 (HG-01)188690-78-0 CHF2OCF2CF2OCHF21,500
HFE-43-10pccc (H-Galden 1040x, HG-11)E1730133 CHF2OCF2OC2F4OCHF21,870
HCFE-235ca2 (Enflurane)13838-16-9CHF2OCF2CHFClb 583
HCFE-235da2 (Isoflurane)26675-46-7CHF2OCHClCF3350
HG-02205367-61-9 HF2C-(OCF2CF2)2-OCF 2Hb 3,825
HG-03173350-37-3 HF2C-(OCF2CF2)3-OCF 2Hb 3,670
HG-20249932-25-0 HF2C-(OCF2)2-OCF2Hb 5,300
HG-21249932-26-1 HF2C-OCF2CF2OCF2OCF 2O-CF2Hb 3,890
HG-30188690-77-9 HF2C-(OCF2)3-OCF2Hb 7,330
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-Pentaoxapentadecane173350-38-4 HCF2O(CF2CF2O)4CF2Hb 3,630
1,1,2-Trifluoro-2-(trifluoromethoxy)-ethane84011-06-3CHF2CHFOCF3b 1,240
Trifluoro(fluoromethoxy)methane2261-01-0CH2FOCF3b 751
Saturated HFEs and HCFEs With Three or More Carbon-Hydrogen Bonds
HFE-143a421-14-7CH3OCF3756
HFE-245cb222410-44-2CH3OCF2CF3708
HFE-245fa184011-15-4CHF2CH2OCF3286
HFE-245fa21885-48-9CHF2OCH2CF3659
HFE-254cb2425-88-7CH3OCF2CHF2359
HFE-263fb2460-43-5CF3CH2OCH311
HFE-263m1; R-E-143a690-22-2CF3OCH2CH3b 29
HFE-347mcc3 (HFE-7000)375-03-1 CH3OCF2CF2CF3575
HFE-347mcf2171182-95-9 CF3CF2OCH2CHF2374
HFE-347mmy122052-84-2 CH3OCF(CF3)2343
HFE-347mmz1 (Sevoflurane)28523-86-6 (CF3)2CHOCH2Fc 216
HFE-347pcf2406-78-0 CHF2CF2OCH2CF3580
HFE-356mec3382-34-3 CH3OCF2CHFCF3101
HFE-356mff2333-36-8 CF3CH2OCH2CF3b 17
HFE-356mmz113171-18-1 (CF3)2CHOCH327
HFE-356pcc3160620-20-2 CH3OCF2CF2CHF2110
HFE-356pcf250807-77-7 CHF2CH2OCF2CHF2265
HFE-356pcf335042-99-0 CHF2OCH2CF2CHF2502
HFE-365mcf222052-81-9 CF3CF2OCH2CH3b 58
HFE-365mcf3378-16-5 CF3CF2CH2OCH311
HFE-374pc2512-51-6 CH3CH2OCF2CHF2557
HFE-449s1 (HFE-7100) Chemical blend163702-07-6C4F9OCH3297
163702-08-7 (CF3)2CFCF2OCH3
HFE-569sf2 (HFE-7200) Chemical blend163702-05-4 C4F9OC2H559
163702-06-5 (CF3)2CFCF2OC2H5
HG'-0173287-23-7 CH3OCF2CF2OCH3b 222
HG'-02485399-46-0 CH3O(CF2CF2O)2CH3b 236
HG'-03485399-48-2 CH3O(CF2CF2O)3CH3b 221
Difluoro(methoxy)methane359-15-9CH3OCHF2b 144
2-Chloro-1,1,2-trifluoro-1-methoxyethane425-87-6CH3OCF2CHFClb 122
1-Ethoxy-1,1,2,2,3,3,3-heptafluoropropane22052-86-4 CF3CF2CF2OCH2CH3b 61
2-Ethoxy-3,3,4,4,5-pentafluorotetrahydro-2,5-bis[1,2,2,2-tetrafluoro-1-(trifluoromethyl)ethyl]-furan920979-28-8 C12H5F19O2b 56
1-Ethoxy-1,1,2,3,3,3-hexafluoropropane380-34-7 CF3CHFCF2OCH2CH3b 23
Fluoro(methoxy)methane460-22-0CH3OCH2Fb 13
1,1,2,2-Tetrafluoro-3-methoxy-propane; Methyl 2,2,3,3-tetrafluoropropyl ether60598-17-6 CHF2CF2CH2OCH3b 0.5
1,1,2,2-Tetrafluoro-1-(fluoromethoxy)ethane37031-31-5 CH2FOCF2CF2Hb 871
Difluoro(fluoromethoxy)methane461-63-2CH2FOCHF2b 617
Fluoro(fluoromethoxy)methane462-51-1CH2FOCH2Fb 130
Fluorinated Formates
Trifluoromethyl formate85358-65-2HCOOCF3b 588
Perfluoroethyl formate313064-40-3HCOOCF2CF3b 580
1,2,2,2-Tetrafluoroethyl formate481631-19-0HCOOCHFCF3b 470
Perfluorobutyl formate197218-56-7 HCOOCF2CF2CF2CF3b 392
Perfluoropropyl formate271257-42-2 HCOOCF2CF2CF3b 376
1,1,1,3,3,3-Hexafluoropropan-2-yl formate856766-70-6HCOOCH(CF3)2b 333
2,2,2-Trifluoroethyl formate32042-38-9HCOOCH2CF3b 33
3,3,3-Trifluoropropyl formate1344118-09-7 HCOOCH2CH2CF3b 17
Fluorinated Acetates
Methyl 2,2,2-trifluoroacetate431-47-0CF3COOCH3b 52
1,1-Difluoroethyl 2,2,2-trifluoroacetate1344118-13-3 CF3COOCF2CH3b 31
Difluoromethyl 2,2,2-trifluoroacetate2024-86-4CF3COOCHF2b 27
2,2,2-Trifluoroethyl 2,2,2-trifluoroacetate407-38-5 CF3COOCH2CF3b 7
Methyl 2,2-difluoroacetate433-53-4HCF2COOCH3b 3
Perfluoroethyl acetate343269-97-6 CH3COOCF2CF3b 2.1
Trifluoromethyl acetate74123-20-9CH3COOCF3b 2.0
Perfluoropropyl acetate1344118-10-0 CH3COOCF2CF2CF3b 1.8
Perfluorobutyl acetate209597-28-4 CH3COOCF2CF2CF2CF3b 1.6
Ethyl 2,2,2-trifluoroacetate383-63-1 CF3COOCH2CH3b 1.3
Carbonofluoridates
Methyl carbonofluoridate1538-06-3FCOOCH3b 95
1,1-Difluoroethyl carbonofluoridate1344118-11-1FCOOCF2CH3b 27
Fluorinated Alcohols Other Than Fluorotelomer Alcohols
Bis(trifluoromethyl)-methanol920-66-1(CF3)2CHOH195
(Octafluorotetramethy-lene) hydroxymethyl groupNAX-(CF2)4CH(OH)-X73
2,2,3,3,3-Pentafluoropropanol422-05-9 CF3CF2CH2OH42
2,2,3,3,4,4,4-Heptafluorobutan-1-ol375-01-9C3F7CH2OHb 25
2,2,2-Trifluoroethanol75-89-8CF3CH2OHb 20
2,2,3,4,4,4-Hexafluoro-1-butanol382-31-0 CF3CHFCF2CH2OHb 17
2,2,3,3-Tetrafluoro-1-propanol76-37-9 CHF2CF2CH2OHb 13
2,2-Difluoroethanol359-13-7CHF2CH2OHb 3
2-Fluoroethanol371-62-0CH2FCH2OHb 1.1
4,4,4-Trifluorobutan-1-ol461-18-7 CF3(CH2)2CH2OHb 0.05
Unsaturated Perfluorocarbons (PFCs)
PFC-1114; TFE116-14-3CF2 = CF2; C2F4b 0.004
PFC-1216; Dyneon HFP116-15-4C3F6; CF3CF = CF2b 0.05
PFC C-1418559-40-0c-C5F8b 1.97
Perfluorobut-2-ene360-89-4CF3CF = CFCF3b 1.82
Perfluorobut-1-ene357-26-6CF3CF2CF = CF2b 0.10
Perfluorobuta-1,3-diene685-63-2CF2 = CFCF = CF2b 0.003
Unsaturated Hydrofluorocarbons (HFCs) and Hydrochlorofluorocarbons (HCFCs)
HFC-1132a; VF275-38-7C2H2F2, CF2 = CH2b 0.04
HFC-1141; VF75-02-5C2H3F, CH2 = CHFb 0.02
(E)-HFC-1225ye5595-10-8CF3CF = CHF(E)b 0.06
(Z)-HFC-1225ye5528-43-8CF3CF = CHF(Z)b 0.22
Solstice 1233zd(E)102687-65-0C3H2ClF3; CHCl = CHCF3b 1.34
HFC-1234yf; HFO-1234yf754-12-1C3H2F4; CF3CF = CH2b 0.31
HFC-1234ze(E)1645-83-6C3H2F4; trans-CF3CH = CHFb 0.97
HFC-1234ze(Z)29118-25-0C3H2F4; cis-CF3CH = CHF; CF3CH = CHFb 0.29
HFC-1243zf; TFP677-21-4C3H3F3, CF3CH = CH2b 0.12
(Z)-HFC-1336692-49-9CF3CH = CHCF3(Z)b 1.58
HFC-1345zfc374-27-6C2F5CH = CH2b 0.09
Capstone 42-U19430-93-4C6H3F9, CF3(CF2)3CH = CH2b 0.16
Capstone 62-U25291-17-2C8H3F13, CF3(CF2)5CH = CH2b 0.11
Capstone 82-U21652-58-4C10H3F17, CF3(CF2)7CH = CH2b 0.09
Unsaturated Halogenated Ethers
PMVE; HFE-2161187-93-5CF3OCF = CF2b 0.17
Fluoroxene406-90-6CF3CH2OCH = CH2b 0.05
Fluorinated Aldehydes
3,3,3-Trifluoro-propanal460-40-2CF3CH2CHOb 0.01
Fluorinated Ketones
Novec 1230 (perfluoro (2-methyl-3-pentanone))756-13-8CF3CF2C(O)CF (CF3)2b 0.1
Fluorotelomer Alcohols
3,3,4,4,5,5,6,6,7,7,7-Undecafluoroheptan-1-ol185689-57-0 CF3(CF2)4CH2CH2OHb 0.43
3,3,3-Trifluoropropan-1-ol2240-88-2 CF3CH2CH2OHb 0.35
3,3,4,4,5,5,6,6,7,7,8,8,9,9,9-Pentadecafluorononan-1-ol755-02-2 CF3(CF2)6CH2CH2OHb 0.33
3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-Nonadecafluoroundecan-1-ol87017-97-8 CF3(CF2)8CH2CH2OHb 0.19
Fluorinated GHGs With Carbon-Iodine Bond(s)
Trifluoroiodomethane2314-97-8CF3Ib 0.4
Other Fluorinated Compounds
Dibromodifluoromethane (Halon 1202)75-61-6CBR2F2b 231
2-Bromo-2-chloro-1,1,1-trifluoroethane (Halon-2311/Halothane)151-67-7CHBrClCF3b 41

Fluorinated GHG GroupdGlobal
warming
potential
(100 yr.)
Default GWPs for Compounds for Which Chemical-Specific GWPs Are Not Listed Above
Fully fluorinated GHGs10,000
Saturated hydrofluorocarbons (HFCs) with 2 or fewer carbon-hydrogen bonds3,700
Saturated HFCs with 3 or more carbon-hydrogen bonds930
Saturated hydrofluoroethers (HFEs) and hydrochlorofluoroethers (HCFEs) with 1 carbon-hydrogen bond5,700
Saturated HFEs and HCFEs with 2 carbon-hydrogen bonds2,600
Saturated HFEs and HCFEs with 3 or more carbon-hydrogen bonds270
Fluorinated formates350
Fluorinated acetates, carbonofluoridates, and fluorinated alcohols other than fluorotelomer alcohols30
Unsaturated perfluorocarbons (PFCs), unsaturated HFCs, unsaturated hydrochlorofluorocarbons (HCFCs), unsaturated halogenated ethers, unsaturated halogenated esters, fluorinated aldehydes, and fluorinated ketones1
Fluorotelomer alcohols1
Fluorinated GHGs with carbon-iodine bond(s)1
Other fluorinated GHGs2,000

a The GWP for this compound was updated in the final rule published on November 29, 2013 [78 FR 71904] and effective on January 1, 2014.

b This compound was added to Table A-1 in the final rule published on December 11, 2014, and effective on January 1, 2015.

c The GWP for this compound was updated in the final rule published on December 11, 2014, and effective on January 1, 2015.

d For electronics manufacturing (as defined in § 98.90 ), the term "fluorinated GHGs" in the definition of each fluorinated GHG group in § 98.6 shall include fluorinated heat transfer fluids (as defined in § 98.98 ), whether or not they are also fluorinated GHGs.

40 C.F.R. 98 app Table A-1 to Subpart A of Part 98

79 FR 73779, Dec. 11, 2014