Code of Federal Regulations > Title 40 > Chapter I > Part 98 > Subpart A > Appendix - Table A-1 to Subpart A of Part 98—Global Warming Potentials, 100-Year Time Horizon

Regulations last checked for updates: Jan 31, 2025

Title 40 - Protection of Environment last revised: Nov 08, 2025

Appendix - Table A-1 to Subpart A of Part 98—Global Warming Potentials, 100-Year Time Horizon

Table A-1 to Subpart A of Part 98—Global Warming Potentials, 100-Year Time Horizon

Name	CAS No.	Chemical formula	Global warming potential (100 yr.)
Chemical-Specific GWPs
Carbon dioxide	124-38-9	CO2	1
Methane	74-82-8	CH4	^a ^d 28
Nitrous oxide	10024-97-2	N2O	^a ^d 265
Fully Fluorinated GHGs
Sulfur hexafluoride	2551-62-4	SF6	^a ^d 23,500
Trifluoromethyl sulphur pentafluoride	373-80-8	SF5CF3	^d 17,400
Nitrogen trifluoride	7783-54-2	NF3	^d 16,100
PFC-14 (Perfluoromethane)	75-73-0	CF4	^a ^d 6,630
PFC-116 (Perfluoroethane)	76-16-4	C2F6	^a ^d 11,100
PFC-218 (Perfluoropropane)	76-19-7	C3F8	^a ^d 8,900
Perfluorocyclopropane	931-91-9	c-C3F6	^d 9,200
PFC-3-1-10 (Perfluorobutane)	355-25-9	C4F10	^a ^d 9,200
PFC-318 (Perfluorocyclobutane)	115-25-3	c-C4F8	^a ^d 9,540
Perfluorotetrahydrofuran	773-14-8	c-C4F8O	^e 13,900
PFC-4-1-12 (Perfluoropentane)	678-26-2	C5F12	^a ^d 8,550
PFC-5-1-14 (Perfluorohexane, FC-72)	355-42-0	C6F14	^a ^d 7,910
PFC-6-1-12	335-57-9	C7F16; CF3(CF2)5CF3	^b 7,820
PFC-7-1-18	307-34-6	C8F18; CF3(CF2)6CF3	^b 7,620
PFC-9-1-18	306-94-5	C10F18	^d 7,190
PFPMIE (HT-70)	NA	CF3OCF(CF3)CF2OCF2OCF3	^d 9,710
Perfluorodecalin (cis)	60433-11-6	Z-C10F18	^b ^d 7,240
Perfluorodecalin (trans)	60433-12-7	E-C10F18	^b ^d 6,290
Perfluorotriethylamine	359-70-6	N(C2F5)3	^e 10,300
Perfluorotripropylamine	338-83-0	N(CF2CF2CF3)3	^e 9,030
Perfluorotributylamine	311-89-7	N(CF2CF2CF2CF3)3	^e 8,490
Perfluorotripentylamine	338-84-1	N(CF2CF2CF2CF2CF3)3	^e 7,260
Saturated Hydrofluorocarbons (HFCs) With Two or Fewer Carbon-Hydrogen Bonds
(4s,5s)-1,1,2,2,3,3,4,5-octafluorocyclopentane	158389-18-5	trans-cyc (-CF2CF2CF2CHFCHF-)	^e 258
HFC-23	75-46-7	CHF3	^a ^d 12,400
HFC-32	75-10-5	CH2F2	^a ^d 677
HFC-125	354-33-6	C2HF5	^a ^d 3,170
HFC-134	359-35-3	C2H2F4	^a ^d 1,120
HFC-134a	811-97-2	CH2FCF3	^a ^d 1,300
HFC-227ca	2252-84-8	CF3CF2CHF2	^b 2,640
HFC-227ea	431-89-0	C3HF7	^a ^d 3,350
HFC-236cb	677-56-5	CH2FCF2CF3	^d 1,210
HFC-236ea	431-63-0	CHF2CHFCF3	^d 1,330
HFC-236fa	690-39-1	C3H2F6	^a ^d 8,060
HFC-329p	375-17-7	CHF2CF2CF2CF3	^b 2360
HFC-43-10mee	138495-42-8	CF3CFHCFHCF2CF3	^a ^d 1,650
Saturated Hydrofluorocarbons (HFCs) With Three or More Carbon-Hydrogen Bonds
1,1,2,2,3,3-hexafluorocyclopentane	123768-18-3	cyc (-CF2CF2CF2CH2CH2-)	^e 120
1,1,2,2,3,3,4-heptafluorocyclopentane	15290-77-4	cyc (-CF2CF2CF2CHFCH2-)	^e 231
HFC-41	593-53-3	CH3F	^a ^d 116
HFC-143	430-66-0	C2H3F3	^a ^d 328
HFC-143a	420-46-2	C2H3F3	^a ^d 4,800
HFC-152	624-72-6	CH2FCH2F	^d 16
HFC-152a	75-37-6	CH3CHF2	^a ^d 138
HFC-161	353-36-6	CH3CH2F	^d 4
HFC-245ca	679-86-7	C3H3F5	^a ^d 716
HFC-245cb	1814-88-6	CF3CF2CH3	^b 4,620
HFC-245ea	24270-66-4	CHF2CHFCHF2	^b 235
HFC-245eb	431-31-2	CH2FCHFCF3	^b 290
HFC-245fa	460-73-1	CHF2CH2CF3	^d 858
HFC-263fb	421-07-8	CH3CH2CF3	^b 76
HFC-272ca	420-45-1	CH3CF2CH3	^b 144
HFC-365mfc	406-58-6	CH3CF2CH2CF3	^d 804
Saturated Hydrofluoroethers (HFEs) and Hydrochlorofluoroethers (HCFEs) With One Carbon-Hydrogen Bond
HFE-125	3822-68-2	CHF2OCF3	^d 12,400
HFE-227ea	2356-62-9	CF3CHFOCF3	^d 6,450
HFE-329mcc2	134769-21-4	CF3CF2OCF2CHF2	^d 3,070
HFE-329me3	428454-68-6	CF3CFHCF2OCF3	^b 4,550
1,1,1,2,2,3,3-Heptafluoro-3-(1,2,2,2-tetrafluoroethoxy)-propane	3330-15-2	CF3CF2CF2OCHFCF3	^b 6,490
Saturated HFEs and HCFEs With Two Carbon-Hydrogen Bonds
HFE-134 (HG-00)	1691-17-4	CHF2OCHF2	^d 5,560
HFE-236ca	32778-11-3	CHF2OCF2CHF2	^b 4,240
HFE-236ca12 (HG-10)	78522-47-1	CHF2OCF2OCHF2	^d 5,350
HFE-236ea2 (Desflurane)	57041-67-5	CHF2OCHFCF3	^d 1,790
HFE-236fa	20193-67-3	CF3CH2OCF3	^d 979
HFE-338mcf2	156053-88-2	CF3CF2OCH2CF3	^d 929
HFE-338mmz1	26103-08-2	CHF2OCH(CF3)2	^d 2,620
HFE-338pcc13 (HG-01)	188690-78-0	CHF2OCF2CF2OCHF2	^d 2,910
HFE-43-10pccc (H-Galden 1040x, HG-11)	E1730133	CHF2OCF2OC2F4OCHF2	^d 2,820
HCFE-235ca2 (Enflurane)	13838-16-9	CHF2OCF2CHFCl	^b 583
HCFE-235da2 (Isoflurane)	26675-46-7	CHF2OCHClCF3	^d 491
HG-02	205367-61-9	HF2C-(OCF2CF2)2-OCF2H	^b ^d 2,730
HG-03	173350-37-3	HF2C-(OCF2CF2)3-OCF2H	^b ^d 2,850
HG-20	249932-25-0	HF2C-(OCF2)2-OCF2H	^b 5,300
HG-21	249932-26-1	HF2C-OCF2CF2OCF2OCF2O-CF2H	^b 3,890
HG-30	188690-77-9	HF2C-(OCF2)3-OCF2H	^b 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-Pentaoxapentadecane	173350-38-4	HCF2O(CF2CF2O)4CF2H	^b 3,630
1,1,2-Trifluoro-2-(trifluoromethoxy)-ethane	84011-06-3	CHF2CHFOCF3	^b 1,240
Trifluoro(fluoromethoxy)methane	2261-01-0	CH2FOCF3	^b 751
Saturated HFEs and HCFEs With Three or More Carbon-Hydrogen Bonds
HFE-143a	421-14-7	CH3OCF3	^d 523
HFE-245cb2	22410-44-2	CH3OCF2CF3	^d 654
HFE-245fa1	84011-15-4	CHF2CH2OCF3	^d 828
HFE-245fa2	1885-48-9	CHF2OCH2CF3	^d 812
HFE-254cb1	425-88-7	CH3OCF2CHF2	^d 301
HFE-263fb2	460-43-5	CF3CH2OCH3	^d 1
HFE-263m1; R-E-143a	690-22-2	CF3OCH2CH3	^b 29
HFE-347mcc3 (HFE-7000)	375-03-1	CH3OCF2CF2CF3	^d 530
HFE-347mcf2	171182-95-9	CF3CF2OCH2CHF2	^d 854
HFE-347mmy1	22052-84-2	CH3OCF(CF3)2	^d 363
HFE-347mmz1 (Sevoflurane)	28523-86-6	(CF3)2CHOCH2F	^c 216
HFE-347pcf2	406-78-0	CHF2CF2OCH2CF3	^d 889
HFE-356mec3	382-34-3	CH3OCF2CHFCF3	^d 387
HFE-356mff2	333-36-8	CF3CH2OCH2CF3	^b 17
HFE-356mmz1	13171-18-1	(CF3)2CHOCH3	^d 14
HFE-356pcc3	160620-20-2	CH3OCF2CF2CHF2	^d 413
HFE-356pcf2	50807-77-7	CHF2CH2OCF2CHF2	^d 719
HFE-356pcf3	35042-99-0	CHF2OCH2CF2CHF2	^d 446
HFE-365mcf2	22052-81-9	CF3CF2OCH2CH3	^b 58
HFE-365mcf3	378-16-5	CF3CF2CH2OCH3	^d 0.99
HFE-374pc2	512-51-6	CH3CH2OCF2CHF2	^d 627
HFE-449s1 (HFE-7100) Chemical blend	163702-07-6	C4F9OCH3	^d 421
	163702-08-7	(CF3)2CFCF2OCH3
HFE-569sf2 (HFE-7200) Chemical blend	163702-05-4	C4F9OC2H5	^d 57
	163702-06-5	(CF3)2CFCF2OC2H5
HFE-7300	132182-92-4	(CF3)2CFCFOC2H5CF2CF2CF3	^e 405
HFE-7500	297730-93-9	n-C3F7CFOC2H5CF(CF3)2	^e 13
HG′-01	73287-23-7	CH3OCF2CF2OCH3	^b 222
HG′-02	485399-46-0	CH3O(CF2CF2O)2CH3	^b 236
HG′-03	485399-48-2	CH3O(CF2CF2O)3CH3	^b 221
Difluoro(methoxy)methane	359-15-9	CH3OCHF2	^b 144
2-Chloro-1,1,2-trifluoro-1-methoxyethane	425-87-6	CH3OCF2CHFCl	^b 122
1-Ethoxy-1,1,2,2,3,3,3-heptafluoropropane	22052-86-4	CF3CF2CF2OCH2CH3	^b 61
2-Ethoxy-3,3,4,4,5-pentafluorotetrahydro-2,5-bis[1,2,2,2-tetrafluoro-1-(trifluoromethyl)ethyl]-furan	920979-28-8	C12H5F19O2	^b 56
1-Ethoxy-1,1,2,3,3,3-hexafluoropropane	380-34-7	CF3CHFCF2OCH2CH3	^b 23
Fluoro(methoxy)methane	460-22-0	CH3OCH2F	^b 13
1,1,2,2-Tetrafluoro-3-methoxy-propane; Methyl 2,2,3,3-tetrafluoropropyl ether	60598-17-6	CHF2CF2CH2OCH3	^b ^d 0.49
1,1,2,2-Tetrafluoro-1-(fluoromethoxy)ethane	37031-31-5	CH2FOCF2CF2H	^b 871
Difluoro(fluoromethoxy)methane	461-63-2	CH2FOCHF2	^b 617
Fluoro(fluoromethoxy)methane	462-51-1	CH2FOCH2F	^b 130
Saturated Chlorofluorocarbons (CFCs)
E-R316c	3832-15-3	trans-cyc (-CClFCF2CF2CClF-)	^e 4,230
Z-R316c	3934-26-7	cis-cyc (-CClFCF2CF2CClF-)	^e 5,660
Fluorinated Formates
Trifluoromethyl formate	85358-65-2	HCOOCF3	^b 588
Perfluoroethyl formate	313064-40-3	HCOOCF2CF3	^b 580
1,2,2,2-Tetrafluoroethyl formate	481631-19-0	HCOOCHFCF3	^b 470
Perfluorobutyl formate	197218-56-7	HCOOCF2CF2CF2CF3	^b 392
Perfluoropropyl formate	271257-42-2	HCOOCF2CF2CF3	^b 376
1,1,1,3,3,3-Hexafluoropropan-2-yl formate	856766-70-6	HCOOCH(CF3)2	^b 333
2,2,2-Trifluoroethyl formate	32042-38-9	HCOOCH2CF3	^b 33
3,3,3-Trifluoropropyl formate	1344118-09-7	HCOOCH2CH2CF3	^b 17
Fluorinated Acetates
Methyl 2,2,2-trifluoroacetate	431-47-0	CF3COOCH3	^b 52
1,1-Difluoroethyl 2,2,2-trifluoroacetate	1344118-13-3	CF3COOCF2CH3	^b 31
Difluoromethyl 2,2,2-trifluoroacetate	2024-86-4	CF3COOCHF2	^b 27
2,2,2-Trifluoroethyl 2,2,2-trifluoroacetate	407-38-5	CF3COOCH2CF3	^b 7
Methyl 2,2-difluoroacetate	433-53-4	HCF2COOCH3	^b 3
Perfluoroethyl acetate	343269-97-6	CH3COOCF2CF3	^b ^d 2
Trifluoromethyl acetate	74123-20-9	CH3COOCF3	^b ^d 2
Perfluoropropyl acetate	1344118-10-0	CH3COOCF2CF2CF3	^b ^d 2
Perfluorobutyl acetate	209597-28-4	CH3COOCF2CF2CF2CF3	^b ^d 2
Ethyl 2,2,2-trifluoroacetate	383-63-1	CF3COOCH2CH3	^b ^d 1
Carbonofluoridates
Methyl carbonofluoridate	1538-06-3	FCOOCH3	^b 95
1,1-Difluoroethyl carbonofluoridate	1344118-11-1	FCOOCF2CH3	^b 27
Fluorinated Alcohols Other Than Fluorotelomer Alcohols
Bis(trifluoromethyl)-methanol	920-66-1	(CF3)2CHOH	^d 182
2,2,3,3,4,4,5,5-Octafluorocyclopentanol	16621-87-7	cyc (-(CF2)4CH(OH)-)	^d 13
2,2,3,3,3-Pentafluoropropanol	422-05-9	CF3CF2CH2OH	^d 19
2,2,3,3,4,4,4-Heptafluorobutan-1-ol	375-01-9	C3F7CH2OH	^b ^d 34
2,2,2-Trifluoroethanol	75-89-8	CF3CH2OH	^b 20
2,2,3,4,4,4-Hexafluoro-1-butanol	382-31-0	CF3CHFCF2CH2OH	^b 17
2,2,3,3-Tetrafluoro-1-propanol	76-37-9	CHF2CF2CH2OH	^b 13
2,2-Difluoroethanol	359-13-7	CHF2CH2OH	^b 3
2-Fluoroethanol	371-62-0	CH2FCH2OH	^b 1.1
4,4,4-Trifluorobutan-1-ol	461-18-7	CF3(CH2)2CH2OH	^b 0.05
Non-Cyclic, Unsaturated Perfluorocarbons (PFCs)
PFC-1114; TFE	116-14-3	CF2 = CF2; C2F4	^b 0.004
PFC-1216; Dyneon HFP	116-15-4	C3F6; CF3CF = CF2	^b 0.05
Perfluorobut-2-ene	360-89-4	CF3CF = CFCF3	^b 1.82
Perfluorobut-1-ene	357-26-6	CF3CF2CF = CF2	^b 0.10
Perfluorobuta-1,3-diene	685-63-2	CF2 = CFCF = CF2	^b 0.003
Non-Cyclic, Unsaturated Hydrofluorocarbons (HFCs) and Hydrochlorofluorocarbons (HCFCs)
HFC-1132a; VF2	75-38-7	C2H2F2, CF2 = CH2	^b 0.04
HFC-1141; VF	75-02-5	C2H3F, CH2 = CHF	^b 0.02
(E)-HFC-1225ye	5595-10-8	CF3CF = CHF(E)	^b 0.06
(Z)-HFC-1225ye	5528-43-8	CF3CF = CHF(Z)	^b 0.22
Solstice 1233zd(E)	102687-65-0	C3H2ClF3; CHCl = CHCF3	^b 1.34
HCFO-1233zd(Z)	99728-16-2	(Z)-CF3CH = CHCl	^e 0.45
HFC-1234yf; HFO-1234yf	754-12-1	C3H2F4; CF3CF = CH2	^b 0.31
HFC-1234ze(E)	1645-83-6	C3H2F4; trans-CF3CH = CHF	^b 0.97
HFC-1234ze(Z)	29118-25-0	C3H2F4; cis-CF3CH = CHF; CF3CH = CHF	^b 0.29
HFC-1243zf; TFP	677-21-4	C3H3F3, CF3CH = CH2	^b 0.12
(Z)-HFC-1336	692-49-9	CF3CH = CHCF3(Z)	^b 1.58
HFO-1336mzz(E)	66711-86-2	(E)-CF3CH = CHCF3	^e 18
HFC-1345zfc	374-27-6	C2F5CH = CH2	^b 0.09
HFO-1123	359-11-5	CHF=CF2	^e 0.005
HFO-1438ezy(E)	14149-41-8	(E)-(CF3)2CFCH = CHF	^e 8.2
HFO-1447fz	355-08-8	CF3(CF2)2CH = CH2	^e 0.24
Capstone 42-U	19430-93-4	C6H3F9, CF3(CF2)3CH = CH2	^b 0.16
Capstone 62-U	25291-17-2	C8H3F13, CF3(CF2)5CH = CH2	^b 0.11
Capstone 82-U	21652-58-4	C10H3F17, CF3(CF2)7CH = CH2	^b 0.09
(e)-1-chloro-2-fluoroethene	460-16-2	(E)-CHCl = CHF	^e 0.004
3,3,3-trifluoro-2-(trifluoromethyl)prop-1-ene	382-10-5	(CF3)2C = CH2	^e 0.38
Non-Cyclic, Unsaturated CFCs
CFC-1112	598-88-9	CClF=CClF	^e 0.13
CFC-1112a	79-35-6	CCl2=CF2	^e 0.021
Non-Cyclic, Unsaturated Halogenated Ethers
PMVE; HFE-216	1187-93-5	CF3OCF = CF2	^b 0.17
Fluoroxene	406-90-6	CF3CH2OCH = CH2	^b 0.05
Methyl-perfluoroheptene-ethers	N/A	CH3OC7F13	^e 15
Non-Cyclic, Unsaturated Halogenated Esters
Ethenyl 2,2,2-trifluoroacetate	433-28-3	CF3COOCH=CH2	^e 0.008
Prop-2-enyl 2,2,2-trifluoroacetate	383-67-5	CF3COOCH2CH=CH2	^e 0.007
Cyclic, Unsaturated HFCs and PFCs
PFC C-1418	559-40-0	c-C5F8	^d 2
Hexafluorocyclobutene	697-11-0	cyc (-CF=CFCF2CF2-)	^e 126
1,3,3,4,4,5,5-heptafluorocyclopentene	1892-03-1	cyc (-CF2CF2CF2CF=CH-)	^e 45
1,3,3,4,4-pentafluorocyclobutene	374-31-2	cyc (-CH=CFCF2CF2-)	^e 92
3,3,4,4-tetrafluorocyclobutene	2714-38-7	cyc (-CH=CHCF2CF2-)	^e 26
Fluorinated Aldehydes
3,3,3-Trifluoro-propanal	460-40-2	CF3CH2CHO	^b 0.01
Fluorinated Ketones
Novec 1230 (perfluoro (2-methyl-3-pentanone))	756-13-8	CF3CF2C(O)CF (CF3)2	^b 0.1
1,1,1-trifluoropropan-2-one	421-50-1	CF3COCH3	^e 0.09
1,1,1-trifluorobutan-2-one	381-88-4	CF3COCH2CH3	^e 0.095
Fluorotelomer Alcohols
3,3,4,4,5,5,6,6,7,7,7-Undecafluoroheptan-1-ol	185689-57-0	CF3(CF2)4CH2CH2OH	^b 0.43
3,3,3-Trifluoropropan-1-ol	2240-88-2	CF3CH2CH2OH	^b 0.35
3,3,4,4,5,5,6,6,7,7,8,8,9,9,9-Pentadecafluorononan-1-ol	755-02-2	CF3(CF2)6CH2CH2OH	^b 0.33
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	CF3(CF2)8CH2CH2OH	^b 0.19
Fluorinated GHGs With Carbon-Iodine Bond(s)
Trifluoroiodomethane	2314-97-8	CF3I	^b 0.4
Remaining Fluorinated GHGs with Chemical-Specific GWPs
Dibromodifluoromethane (Halon 1202)	75-61-6	CBr2F2	^b 231
2-Bromo-2-chloro-1,1,1-trifluoroethane (Halon-2311/Halothane)	151-67-7	CHBrClCF3	^b 41
Heptafluoroisobutyronitrile	42532-60-5	(CF3)2CFCN	^e 2,750
Carbonyl fluoride	353-50-4	COF2	^e 0.14

Fluorinated GHG group ^f	Global warming potential (100 yr.)
Default GWPs for Compounds for Which Chemical-Specific GWPs Are Not Listed Above
Fully fluorinated GHGs ^g	9,200
Saturated hydrofluorocarbons (HFCs) with 2 or fewer carbon-hydrogen bonds ^g	3,000
Saturated HFCs with 3 or more carbon-hydrogen bonds ^g	840
Saturated hydrofluoroethers (HFEs) and hydrochlorofluoroethers (HCFEs) with 1 carbon-hydrogen bond ^g	6,600
Saturated HFEs and HCFEs with 2 carbon-hydrogen bonds ^g	2,900
Saturated HFEs and HCFEs with 3 or more carbon-hydrogen bonds ^g	320
Saturated chlorofluorocarbons (CFCs) ^g	4,900
Fluorinated formates	350
Cyclic forms of the following: unsaturated perfluorocarbons (PFCs), unsaturated HFCs, unsaturated CFCs, unsaturated hydrochlorofluorocarbons (HCFCs), unsaturated bromofluorocarbons (BFCs), unsaturated bromochlorofluorocarbons (BCFCs), unsaturated hydrobromofluorocarbons (HBFCs), unsaturated hydrobromochlorofluorocarbons (HBCFCs), unsaturated halogenated ethers, and unsaturated halogenated esters ^g	58
Fluorinated acetates, carbonofluoridates, and fluorinated alcohols other than fluorotelomer alcohols ^g	25
Fluorinated aldehydes, fluorinated ketones, and non-cyclic forms of the following: unsaturated perfluorocarbons (PFCs), unsaturated HFCs, unsaturated CFCs, unsaturated HCFCs, unsaturated BFCs, unsaturated BCFCs, unsaturated HBFCs, unsaturated HBCFCs, unsaturated halogenated ethers and unsaturated halogenated esters ^g	1
Fluorotelomer alcohols ^g	1
Fluorinated GHGs with carbon-iodine bond(s) ^g	1
Other fluorinated GHGs ^g	1,800

^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 The GWP for this compound was updated in the final rule published on April 25, 2024 and effective on January 1, 2025.

^e The GWP for this compound was added to table A-1 in the final rule published on April 25, 2024 and effective on January 1, 2025.

^f 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 § 98.6), whether or not they are also fluorinated GHGs.

^g The GWP for this fluorinated GHG group was updated in the final rule published on April 25, 2024 and effective on January 1, 2025.

[89 FR 31894, Apr. 25, 2024]

authority: 42 U.S.C. 7401-7671q.

source: 74 FR 56374, Oct. 30, 2009, unless otherwise noted.