List of refrigerants

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Chemical refrigerants are assigned an R number which is determined systematically according to molecular stucture. The following is a list of refrigerants with their R numbers, IUPAC chemical name, molecular formula, and CAS number.

R number Name Formula CAS number
R-10 Tetrachloromethane CCl₄ 56-23-5
R-11 Trichlorofluoromethane CCl₃F 75-69-4
R-12 Dichlorodifluoromethane CCl₂F₂ 75-71-8
R-12B1 Bromochlorodifluoromethane CBrClF₂ 353-59-3
R-12B2 Dibromodifluoromethane CBr₂F₂ 75-61-6
R-13 Chlorotrifluoromethane CClF₃ 75-72-9
R-13B1 Bromotrifluoromethane CF₃Br 75-63-8
R-14 Carbon tetrafluoride CF₄ 75-73-0
R-20 Trichloromethane CHCl₃ 67-66-3
R-21 Dichlorofluoromethane CHFCl₂ 75-43-4
R-22 Chlorodifluoromethane CHClF₂ 75-45-6
R-22B1 Bromodifluoromethane CHBrF₂ 1511-62-2
R-23 Trifluoromethane CHF₃ 75-46-7
R-30 Dichloromethane CH₂Cl₂ 75-09-2
R-31 Chlorofluoromethane CH₂FCl 593-70-4
R-32 Difluoromethane CH₂F₂ 75-10-5
R-40 Chloromethane CH₃Cl 74-87-3
R-41 Fluoromethane CH₃F 593-53-3
R-50 Methane CH₄ 74-82-8]
R-110 Hexachloroethane C₂Cl₆ 67-72-1
R-111 Pentachlorofluoroethane C₂FCl₅ 354-56-3
R-112 Tetrachloro-1,2-difluoroethane C₂F₂Cl₄ 76-12-0
R-112a 1,1,1,2-Tetrachloro-2,2-difluoroethane C₂F₂Cl₄ 76-11-9
R-113 1,1,2-Trichlorotrifluoroethane CCl₂FCClF₂ 76-13-1
R-113a 1,1,1-Trichlorotrifluoroethane CCl₂FCClF₂ 354-58-5
R-114 1,2-Dichlorotetrafluoroethane CClF₂CClF₂ 76-14-2
R-114a 1,1-Dichlorotetrafluoroethane CClF₂CClF₂ 374-07-2
R-114B2 Dibromotetrafluoroethane C₂Br₂F₄ 124-73-2
R-115 Chloropentafluoroethane CClF₂CF₃ 76-15-3
R-116 Hexafluoroethane C₂F₆ 76-16-4
R-120 Pentachloroethane C₂HCl₅ 76-01-7
R-121 Tetrachlorofluoroethane C₂HFCl₄ 354-14-3
R-122 Trichlorodifluoroethane C₂HF₂Cl₃ 354-21-2
R-123 2,2-Dichloro-1,1,1-trifluoroethane CHCl₂CF₃ 306-83-2
R-124 Chlorotetrafluoroethane C₂HF₄Cl 2837-89-0
R-124a Chlorotetrafluoroethane C₂HF₄Cl 354-25-6
R-125 Pentafluoroethane C₂HF₅ 354-33-6
R-125E 3822-68-2
R-130 Tetrachloroethane C₂H₂Cl₄ 79-34-5
R-131 Trichlorofluoroethane C₂H₂FCl₃ 359-28-4
R-132B Dichlorodifluoroethane C₂H₂F₂Cl₂ 1649-08-7
R-132bB2 1,2-Dibromo-1,1-difluoroethane C₂H₂Br₂F₂ 75-82-1
R-133a Chlorotrifluoroethane C₂H₂F₃Cl 75-88-7
R-134 1,1,2,2-Tetrafluoroethane C₂H₂F₄
R-134a 1,1,1,2-Tetrafluoroethane CF₃CH₂F 811-97-2
R-E134 Bis(difluoromethyl)ether C₂H₂F₄O
R-140a Trichloroethane C₂H₃Cl₃ 71-55-6
R-141B2 1,2-Dibromofluoroethane C₂H₃Br₂F 358-97-4
R-141b Dichlorofluoroethane C₂H₃FCl₂ 1717-00-6
R-142b Chlorodifluoroethane C₂H₃F₂Cl 75-68-3
R-143a Trifluoroethane C₂H₃F₃ 420-46-2
R-152a Difluoroethane C₂H₄F₂ 75-37-6
R-160 Chloroethane C₂H₅Cl 75-00-3
R-170 Ethane C₂H₆ 74-84-0
R-211 Heptachlorofluoropropane C₃FCl₇
R-212 Hexachlorodifluoropropane C₃F₂Cl₆
R-213 Pentachlorotrifluoropropane C₃F₃Cl₅
R-214 Tetrachlorotetrafluoropropane C₃F₄Cl₄
R-215 Trichloropentafluoropropane C₃F₅Cl₃
R-216 Dichlorohexafluoropropane C₃F₆Cl₂
R-217 Monochloroheptafluoropropane C₃F₇Cl
R-218 Octafluoropropane C₃F₈ 76-19-7
R-221 Hexachlorofluoropropane C₃HFCl₆
R-222 Pentachlorodifluoropropane C₃HF₂Cl₅
R-223 Tetrachlorotrifluoropropane C₃HF₃Cl₄
R-224 Trichlorotetrafluoropropane C₃HF₄Cl₃
R-225CA Dichloropentafluoropropane C₃HF₅Cl₂
R-225CB Dichloropentafluoropropane C₃HF₅Cl₂
R-226 Chlorohexafluoropropane C₃HF₆Cl
R-227ca 2252-84-8
R-227ea 1,1,1,2,3,3,3-Heptafluoropropane C₃HF₇ 431-89-0
R-231 Pentachlorofluoropropane C₃H₂FCl₅
R-232 Tetrachlorodifluoropropane C₃H₂F₂Cl₄
R-233 Trichlorotrifluoropropane C₃H₂F₃Cl₃
R-234 Dichlorotetrafluoropropane C₃H₂F₄Cl₂
R-235 Chloropentafluoropropane C₃H₂F₅Cl
R-236cb 677-56-5
R-236ea 431-63-0
R-236fa 1,1,1,3,3,3-Hexafluoropropane CF₃CH₂CF₃ 690-39-1
R-FE-36 Hexafluoropropane 359-58-0
R-241 Tetrachlorofluoropropane C₃H₃FCl₄
R-242 Trichlorodifluoropropane C₃H₃F₂Cl₃
R-243 Dichlorotrifluoropropane C₃H₃F₃Cl₂
R-244 Chlorotetrafluoropropane C₃H₃F₄Cl
R-245ca 1,1,2,2,3-Pentafluoropropane CHF₂CF₂CH₂F 679-86-7
R-245cb 1814-88-6
R-245ea 24270-66-4
R-245eb Pentafluoropropane C₃H₃F₅ 431-31-2
R-245fa C₃H₃F₅ 460-73-1
R-251 Trichlorofluoropropane C₃H₄FCl₃
R-252 Dichlorodifluoropropane C₃H₄F₂Cl₂
R-253 Chlorotrifluoropropane C₃H₄F₃Cl
R-254cb 40723-63-5
R-261 Dichlorofluoropropane C₃H₅FCl₂
R-262 Chlorodifluoropropane C₃H₅F₂Cl
R-271 Chlorofluoropropane C₃H₅FCl
R-290 Propane C₃H₈ 74-98-6
R-C316 Dichlorohexafluorocyclobutane C₄Cl₂F₆ 356-18-3
R-C317 Chloroheptafluorocyclobutane C₄ClF₇ 377-41-3
R-C318 Octafluorocyclobutane C₄F₈ 115-25-3
R-329ccb 375-17-7
R-338eea 75995-72-1
R-347ccd 662-00-0
R-356mcf
R-356mffm
R- Tetradecafluorohexane CF₃(CF₂)₄CF₃ 355-42-0
R-400 R-12/R-114 (60/40 wt%) binary blend
R-401A R-22/R-152a/R-124 (53/13/34)
R-401B R-22/R-152a/R-124 (61/11/28)
R-401C R-22/R-152a/R-124 (33/15/52)
R-402A R-22/R-290/R-125 (60/02/38)
R-402B R-22/R-290/R-125 (38/02/60)
R-403A R-290/R-22/R-218 (5/75/20)
R-403B R-290/R-22/R-218 (5/56/39)
R-404A R-125/R-143a/R-134a (44/52/4)
R-405A R-22/R-152a/R-142b/R-C318 (45/7/5.5/42.5)
R-406A R-22/R-600a/R-142b(55/04/41)
R-407A R-32/R-125/R-134a (20/40/40)
R-407B R-32/R-125/R-134a (10/70/20)
R-407C R-32/R-125/R-134a
R-408A R-22/R-143a (45/55)
R-409A R-22/R-124/R-142b
R-410A HFC32/HFC125 (50/50)
R-410B HFC32/HFC125 (45/55)
R-411A R-1270/R-22/R-152a (1.5/87.5/11)
R-411B R-1270/R-22/R-152a (3/94/3)
R-412A R-22/R-218/R-142b (70/5/25)
R-414A R-22/R124/600a/142a (51/28.5/4.0/16.5)
R-414B R22/124/600a/142b (50/39/1.5/9.5)
R-417A
R-422A
R-422B
R-500 R-12/152a (73.8/26.2)
R-501 R-22/R-12 (75/25)
R-502 R-22/R-115 (48.8/51.2)
R-503 R-23/R-13 (40.1/59.9)
R-504 R-32/R-115 (48.2/51.8)
R-505 R-12/R-31 (78/22)
R-506 R-31/R-114 (55.1/44.9)
R-507 R-125/R-143a/R-134a
R-508 R-23/R-116 (39/61)
R-509 R-22/R218 (44/56)
R-600 Butane CH₃CH₂CH₂CH₃
R-600a Methylpropane (CH₃)₂CH₂CH₃
R-610 Diethyl ether C₂H₅OC₂H₅
R-611 Methyl formate C₂H₄O
R-630 Methylamine CH₂NH₂
R-631 Ethylamine C₂H₅NH₂
R-702 Hydrogen H₂
R-704 Helium He
R-717 Ammonia NH₃
R-718 Water H₂O
R-720 Neon Ne
R-728 Nitrogen N₂
R-732 Oxygen O₂
R-740 Argon Ar
R-744 Carbon dioxide CO₂
R-744A Nitrous oxide N₂O
R-764 Sulfur dioxide SO₂
R-1112a 1,1-Dichloro-2,2-difluoroethylene C₂Cl₂F₂
R-1113 Chlorotrifluoroethylene C₂ClF₃
R-1114 Tetrafluoroethylene C₂F₄
R-1120 Trichloroethylene C₂HCl₃ 79-01-6
R-1130 cis-1,2-Dichloroethylene C₂H₂Cl₂ 156-59-2
R-1132 1,1-Difluoroethylene C₂H₂F₂
R-1140 Chloroethylene C₂H₃Cl
R-1141 Fluoroethylene C₂H₃F
R-1211 Bromochlorodifluoromethane CF₂ClBr
R-1216 Hexafluoropropene C₃F₆ 116-15-4
R- Hexafluoropropene trimer (C₃F₆)₃ 6792-31-0
R-1270 Propylene C₃H₆ 115-07-1
R-1301 Bromotrifluoromethane CF₃Br
R-2402 Dibromotetrafluoroethane C₂F₄Br₂

R number	Name	Formula	CAS number
R-10	Tetrachloromethane	CCl₄	56-23-5
R-11	Trichlorofluoromethane	CCl₃F	75-69-4
R-12	Dichlorodifluoromethane	CCl₂F₂	75-71-8
R-12B1	Bromochlorodifluoromethane	CBrClF₂	353-59-3
R-12B2	Dibromodifluoromethane	CBr₂F₂	75-61-6
R-13	Chlorotrifluoromethane	CClF₃	75-72-9
R-13B1	Bromotrifluoromethane	CF₃Br	75-63-8
R-14	Carbon tetrafluoride	CF₄	75-73-0
R-20	Trichloromethane	CHCl₃	67-66-3
R-21	Dichlorofluoromethane	CHFCl₂	75-43-4
R-22	Chlorodifluoromethane	CHClF₂	75-45-6
R-22B1	Bromodifluoromethane	CHBrF₂	1511-62-2
R-23	Trifluoromethane	CHF₃	75-46-7
R-30	Dichloromethane	CH₂Cl₂	75-09-2
R-31	Chlorofluoromethane	CH₂FCl	593-70-4
R-32	Difluoromethane	CH₂F₂	75-10-5
R-40	Chloromethane	CH₃Cl	74-87-3
R-41	Fluoromethane	CH₃F	593-53-3
R-50	Methane	CH₄	74-82-8]
R-110	Hexachloroethane	C₂Cl₆	67-72-1
R-111	Pentachlorofluoroethane	C₂FCl₅	354-56-3
R-112	Tetrachloro-1,2-difluoroethane	C₂F₂Cl₄	76-12-0
R-112a	1,1,1,2-Tetrachloro-2,2-difluoroethane	C₂F₂Cl₄	76-11-9
R-113	1,1,2-Trichlorotrifluoroethane	CCl₂FCClF₂	76-13-1
R-113a	1,1,1-Trichlorotrifluoroethane	CCl₂FCClF₂	354-58-5
R-114	1,2-Dichlorotetrafluoroethane	CClF₂CClF₂	76-14-2
R-114a	1,1-Dichlorotetrafluoroethane	CClF₂CClF₂	374-07-2
R-114B2	Dibromotetrafluoroethane	C₂Br₂F₄	124-73-2
R-115	Chloropentafluoroethane	CClF₂CF₃	76-15-3
R-116	Hexafluoroethane	C₂F₆	76-16-4
R-120	Pentachloroethane	C₂HCl₅	76-01-7
R-121	Tetrachlorofluoroethane	C₂HFCl₄	354-14-3
R-122	Trichlorodifluoroethane	C₂HF₂Cl₃	354-21-2
R-123	2,2-Dichloro-1,1,1-trifluoroethane	CHCl₂CF₃	306-83-2
R-124	Chlorotetrafluoroethane	C₂HF₄Cl	2837-89-0
R-124a	Chlorotetrafluoroethane	C₂HF₄Cl	354-25-6
R-125	Pentafluoroethane	C₂HF₅	354-33-6
R-125E			3822-68-2
R-130	Tetrachloroethane	C₂H₂Cl₄	79-34-5
R-131	Trichlorofluoroethane	C₂H₂FCl₃	359-28-4
R-132B	Dichlorodifluoroethane	C₂H₂F₂Cl₂	1649-08-7
R-132bB2	1,2-Dibromo-1,1-difluoroethane	C₂H₂Br₂F₂	75-82-1
R-133a	Chlorotrifluoroethane	C₂H₂F₃Cl	75-88-7
R-134	1,1,2,2-Tetrafluoroethane	C₂H₂F₄
R-134a	1,1,1,2-Tetrafluoroethane	CF₃CH₂F	811-97-2
R-E134	Bis(difluoromethyl)ether	C₂H₂F₄O
R-140a	Trichloroethane	C₂H₃Cl₃	71-55-6
R-141B2	1,2-Dibromofluoroethane	C₂H₃Br₂F	358-97-4
R-141b	Dichlorofluoroethane	C₂H₃FCl₂	1717-00-6
R-142b	Chlorodifluoroethane	C₂H₃F₂Cl	75-68-3
R-143a	Trifluoroethane	C₂H₃F₃	420-46-2
R-152a	Difluoroethane	C₂H₄F₂	75-37-6
R-160	Chloroethane	C₂H₅Cl	75-00-3
R-170	Ethane	C₂H₆	74-84-0
R-211	Heptachlorofluoropropane	C₃FCl₇
R-212	Hexachlorodifluoropropane	C₃F₂Cl₆
R-213	Pentachlorotrifluoropropane	C₃F₃Cl₅
R-214	Tetrachlorotetrafluoropropane	C₃F₄Cl₄
R-215	Trichloropentafluoropropane	C₃F₅Cl₃
R-216	Dichlorohexafluoropropane	C₃F₆Cl₂
R-217	Monochloroheptafluoropropane	C₃F₇Cl
R-218	Octafluoropropane	C₃F₈	76-19-7
R-221	Hexachlorofluoropropane	C₃HFCl₆
R-222	Pentachlorodifluoropropane	C₃HF₂Cl₅
R-223	Tetrachlorotrifluoropropane	C₃HF₃Cl₄
R-224	Trichlorotetrafluoropropane	C₃HF₄Cl₃
R-225CA	Dichloropentafluoropropane	C₃HF₅Cl₂
R-225CB	Dichloropentafluoropropane	C₃HF₅Cl₂
R-226	Chlorohexafluoropropane	C₃HF₆Cl
R-227ca			2252-84-8
R-227ea	1,1,1,2,3,3,3-Heptafluoropropane	C₃HF₇	431-89-0
R-231	Pentachlorofluoropropane	C₃H₂FCl₅
R-232	Tetrachlorodifluoropropane	C₃H₂F₂Cl₄
R-233	Trichlorotrifluoropropane	C₃H₂F₃Cl₃
R-234	Dichlorotetrafluoropropane	C₃H₂F₄Cl₂
R-235	Chloropentafluoropropane	C₃H₂F₅Cl
R-236cb			677-56-5
R-236ea			431-63-0
R-236fa	1,1,1,3,3,3-Hexafluoropropane	CF₃CH₂CF₃	690-39-1
R-FE-36	Hexafluoropropane		359-58-0
R-241	Tetrachlorofluoropropane	C₃H₃FCl₄
R-242	Trichlorodifluoropropane	C₃H₃F₂Cl₃
R-243	Dichlorotrifluoropropane	C₃H₃F₃Cl₂
R-244	Chlorotetrafluoropropane	C₃H₃F₄Cl
R-245ca	1,1,2,2,3-Pentafluoropropane	CHF₂CF₂CH₂F	679-86-7
R-245cb			1814-88-6
R-245ea			24270-66-4
R-245eb	Pentafluoropropane	C₃H₃F₅	431-31-2
R-245fa		C₃H₃F₅	460-73-1
R-251	Trichlorofluoropropane	C₃H₄FCl₃
R-252	Dichlorodifluoropropane	C₃H₄F₂Cl₂
R-253	Chlorotrifluoropropane	C₃H₄F₃Cl
R-254cb			40723-63-5
R-261	Dichlorofluoropropane	C₃H₅FCl₂
R-262	Chlorodifluoropropane	C₃H₅F₂Cl
R-271	Chlorofluoropropane	C₃H₅FCl
R-290	Propane	C₃H₈	74-98-6
R-C316	Dichlorohexafluorocyclobutane	C₄Cl₂F₆	356-18-3
R-C317	Chloroheptafluorocyclobutane	C₄ClF₇	377-41-3
R-C318	Octafluorocyclobutane	C₄F₈	115-25-3
R-329ccb			375-17-7
R-338eea			75995-72-1
R-347ccd			662-00-0
R-356mcf
R-356mffm
R-	Tetradecafluorohexane	CF₃(CF₂)₄CF₃	355-42-0
R-400	R-12/R-114 (60/40 wt%)	binary blend
R-401A	R-22/R-152a/R-124 (53/13/34)
R-401B	R-22/R-152a/R-124 (61/11/28)
R-401C	R-22/R-152a/R-124 (33/15/52)
R-402A	R-22/R-290/R-125 (60/02/38)
R-402B	R-22/R-290/R-125 (38/02/60)
R-403A	R-290/R-22/R-218 (5/75/20)
R-403B	R-290/R-22/R-218 (5/56/39)
R-404A	R-125/R-143a/R-134a (44/52/4)
R-405A	R-22/R-152a/R-142b/R-C318 (45/7/5.5/42.5)
R-406A	R-22/R-600a/R-142b(55/04/41)
R-407A	R-32/R-125/R-134a (20/40/40)
R-407B	R-32/R-125/R-134a (10/70/20)
R-407C	R-32/R-125/R-134a
R-408A	R-22/R-143a (45/55)
R-409A	R-22/R-124/R-142b
R-410A	HFC32/HFC125 (50/50)
R-410B	HFC32/HFC125 (45/55)
R-411A	R-1270/R-22/R-152a (1.5/87.5/11)
R-411B	R-1270/R-22/R-152a (3/94/3)
R-412A	R-22/R-218/R-142b (70/5/25)
R-414A	R-22/R124/600a/142a (51/28.5/4.0/16.5)
R-414B	R22/124/600a/142b (50/39/1.5/9.5)
R-417A
R-422A
R-422B
R-500	R-12/152a (73.8/26.2)
R-501	R-22/R-12 (75/25)
R-502	R-22/R-115 (48.8/51.2)
R-503	R-23/R-13 (40.1/59.9)
R-504	R-32/R-115 (48.2/51.8)
R-505	R-12/R-31 (78/22)
R-506	R-31/R-114 (55.1/44.9)
R-507	R-125/R-143a/R-134a
R-508	R-23/R-116 (39/61)
R-509	R-22/R218 (44/56)
R-600	Butane	CH₃CH₂CH₂CH₃
R-600a	Methylpropane	(CH₃)₂CH₂CH₃
R-610	Diethyl ether	C₂H₅OC₂H₅
R-611	Methyl formate	C₂H₄O
R-630	Methylamine	CH₂NH₂
R-631	Ethylamine	C₂H₅NH₂
R-702	Hydrogen	H₂
R-704	Helium	He
R-717	Ammonia	NH₃
R-718	Water	H₂O
R-720	Neon	Ne
R-728	Nitrogen	N₂
R-732	Oxygen	O₂
R-740	Argon	Ar
R-744	Carbon dioxide	CO₂
R-744A	Nitrous oxide	N₂O
R-764	Sulfur dioxide	SO₂
R-1112a	1,1-Dichloro-2,2-difluoroethylene	C₂Cl₂F₂
R-1113	Chlorotrifluoroethylene	C₂ClF₃
R-1114	Tetrafluoroethylene	C₂F₄
R-1120	Trichloroethylene	C₂HCl₃	79-01-6
R-1130	cis-1,2-Dichloroethylene	C₂H₂Cl₂	156-59-2
R-1132	1,1-Difluoroethylene	C₂H₂F₂
R-1140	Chloroethylene	C₂H₃Cl
R-1141	Fluoroethylene	C₂H₃F
R-1211	Bromochlorodifluoromethane	CF₂ClBr
R-1216	Hexafluoropropene	C₃F₆	116-15-4
R-	Hexafluoropropene trimer	(C₃F₆)₃	6792-31-0
R-1270	Propylene	C₃H₆	115-07-1
R-1301	Bromotrifluoromethane	CF₃Br
R-2402	Dibromotetrafluoroethane	C₂F₄Br₂

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