Chemical refrigerants are assigned an R number(sometimes the label replaces it with the word Freon) which is determined systematically according to molecular structure. 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
CCl3 F
75-69-4
R-12
Dichlorodifluoromethane
CCl2 F2
75-71-8
R-12B1
Bromochlorodifluoromethane
CBrClF2
353-59-3
R-12B2
Dibromodifluoromethane
CBr2 F2
75-61-6
R-13
Chlorotrifluoromethane
CClF3
75-72-9
R-13B1
Bromotrifluoromethane
CF3 Br
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
CH2 Cl2
75-09-2
R-31
Chlorofluoromethane
CH2 FCl
593-70-4
R-32
Difluoromethane
CH2 F2
75-10-5
R-40
Chloromethane
CH3 Cl
74-87-3
R-41
Fluoromethane
CH3 F
593-53-3
R-50
Methane
CH4
74-82-8
R-110
Hexachloroethane
C2 Cl6
67-72-1
R-111
Pentachlorofluoroethane
C2 FCl5
354-56-3
R-112
1,1,2,2-Tetrachloro-1,2-difluoroethane
C2 F2 Cl4
76-12-0
R-112a
1,1,1,2-Tetrachloro-2,2-difluoroethane
C2 F2 Cl4
76-11-9
R-113
1,1,2-Trichlorotrifluoroethane
C2 F3 Cl3
76-13-1
R-113a
1,1,1-Trichlorotrifluoroethane
C2 F3 Cl3
354-58-5
R-114
1,2-Dichlorotetrafluoroethane
C2 F4 Cl2
76-14-2
R-114a
1,1-Dichlorotetrafluoroethane
C2 F4 Cl2
374-07-2
R-114B2
Dibromotetrafluoroethane
C2 F4 Br2
124-73-2
R-115
Chloropentafluoroethane
C2 F5 Cl
76-15-3
R-116
Hexafluoroethane
C2 F6
76-16-4
R-120
Pentachloroethane
C2 HCl5
76-01-7
R-121
1,1,2,2-Tetrachloro-1-fluoroethane
C2 HFCl4
354-14-3
R-121a
1,1,1,2-Tetrachloro-2-fluoroethane
C2 HFCl4
354-11-0
R-122
1,1,2-Trichloro-2,2-difluoroethane
C2 HF2 Cl3
354-21-2
R-122a
1,1,2-Trichloro-1,2-difluoroethane
C2 HF2 Cl3
354-15-4
R-122b
1,1,1-Trichloro-2,2-difluoroethane
C2 HF2 Cl3
354-12-1
R-123
2,2-Dichloro-1,1,1-trifluoroethane
C2 F3 Cl2
306-83-2
R-123a
1,2-Dichloro-1,1,2-trifluoroethane
C2 F3 Cl2
354-23-4
R-123b
1,1-Dichloro-1,2,2-trifluoroethane
C2 F3 Cl2
812-04-4
R-124
2-Chloro-1,1,1,2-tetrafluoroethane
C2 HF4 Cl
2837-89-0
R-124a
1-Chloro-1,1,2,2-tetrafluoroethane
C2 HF4 Cl
354-25-6
R-125
Pentafluoroethane
C2 HF5
354-33-6
R-E125
(Difluoromethoxy)(trifluoro)methane
C2 HF5 O
3822-68-2
R-130
1,1,2,2-Tetrachloroethane
C2 H2 Cl4
79-34-5
R-130a
1,1,1,2-Tetrachloroethane
C2 H2 Cl4
630-20-6
R-131
1,1,2-trichloro-2-fluoroethane
C2 H2 FCl3
359-28-4
R-131a
1,1,2-trichloro-1-fluoroethane
C2 H2 FCl3
811-95-0
R-131b
1,1,1-trichloro-2-fluoroethane
C2 H2 FCl3
2366-36-1
R-132
Dichlorodifluoroethane
C2 H2 F2 Cl2
25915-78-0
R-132a
1,1-Dichloro-2,2-difluoroethane
C2 H2 F2 Cl2
471-43-2
R-132b
1,2-Dichloro-1,1-difluoroethane
C2 H2 F2 Cl2
1649-08-7
R-132c
1,1-Dichloro-1,2-difluoroethane
C2 H2 F2 Cl2
1842-05-3
R-132bB2
1,2-Dibromo-1,1-difluoroethane
C2 H2 Br2 F2
75-82-1
R-133
1-Chloro-1,2,2-Trifluoroethane
C2 H2 F3 Cl
431-07-2
R-133a
1-Chloro-2,2,2-Trifluoroethane
C2 H2 F3 Cl
75-88-7
R-133b
1-Chloro-1,1,2-Trifluoroethane
C2 H2 F3 Cl
421-04-5
R-134
1,1,2,2-Tetrafluoroethane
C2 H2 F4
359-35-3
R-134a
1,1,1,2-Tetrafluoroethane
C2 H2 F4
811-97-2
R-E134
Bis(difluoromethyl)ether
C2 H2 F4 O
1691-17-4
R-140
1,1,2-Trichloroethane
C2 H3 Cl3
79-00-5
R-140a
1,1,1-Trichloroethane
C2 H3 Cl3
71-55-6
R-141
1,2-Dichloro-1-fluoroethane
C2 H3 FCl2
430-57-9
R-141B2
1,2-Dibromo-1-fluoroethane
C2 H3 Br2 F
358-97-4
R-141a
1,1-Dichloro-2-fluoroethane
C2 H3 FCl2
430-53-5
R-141b
1,1-Dichloro-1-fluoroethane
C2 H3 FCl2
1717-00-6
R-142
Chlorodifluoroethane
C2 H3 F2 Cl
25497-29-4
R-142a
1-Chloro-1,2-difluoroethane
C2 H3 F2 Cl
25497-29-4
R-142b
1-Chloro-1,1-difluoroethane
C2 H3 F2 Cl
75-68-3
R-143
1,1,2-Trifluoroethane
C2 H3 F3
430-66-0
R-143a
1,1,1-Trifluoroethane
C2 H3 F3
420-46-2
R-143m
Methyl trifluoromethyl ether
C2 H3 F3 O
421-14-7
R-E143a
2,2,2-Trifluoroethyl methyl ether
C3 H5 F3 O
460-43-5
R-150
1,2-Dichloroethane
C2 H4 Cl2
107-06-2
R-150a
1,1-Dichloroethane
C2 H4 Cl2
75-34-3
R-151
Chlorofluoroethane
C2 H4 ClF
110587-14-9
R-151a
1-Chloro-1-fluoroethane
C2 H4 ClF
1615-75-4
R-152
1,2-Difluoroethane
C2 H4 F2
624-72-6
R-152a
1,1-Difluoroethane
C2 H4 F2
75-37-6
R-160
Chloroethane
C2 H5 Cl
75-00-3
R-161
Fluoroethane
C2 H5 F
353-36-6
R-170
Ethane
C2 H6
74-84-0
R-211
1,1,1,2,2,3,3-Heptachloro-3-fluoropropane
C3 FCl7
422-78-6
R-212
Hexachlorodifluoropropane
C3 F2 Cl6
76546-99-3
R-213
1,1,1,3,3-Pentachloro-2,2,3-trifluoropropane
C3 F3 Cl5
2354-06-5
R-214
1,2,2,3-Tetrachloro-1,1,3,3-tetrafluoropropane
C3 F4 Cl4
2268-46-4
R-215
1,1,1-Trichloro-2,2,3,3,3-pentafluoropropane
C3 F5 Cl3
4259-43-2
R-216
1,2-Dichloro-1,1,2,3,3,3-hexafluoropropane
C3 F6 Cl2
661-97-2
R-216ca
1,3-Dichloro-1,1,2,2,3,3-hexafluoropropane
C3 F6 Cl2
662-01-1
R-217
1-Chloro-1,1,2,2,3,3,3-heptafluoropropane
C3 F7 Cl
422-86-6
R-217ba
2-Chloro-1,1,1,2,3,3,3-heptafluoropropane
C3 F7 Cl
76-18-6
R-218
Octafluoropropane
C3 F8
76-19-7
R-221
1,1,1,2,2,3-Hexachloro-3-fluoropropane
C3 HFCl6
422-26-4
R-222
Pentachlorodifluoropropane
C3 HF2 Cl5
134237-36-8
R-222c
1,1,1,3,3-Pentachloro-2,2-difluoropropane
C3 HF2 Cl5
422-49-1
R-223
Tetrachlorotrifluoropropane
C3 HF3 Cl4
134237-37-9
R-223ca
1,1,3,3-Tetrachloro-1,2,2-trifluoropropane
C3 HF3 Cl4
422-52-6
R-223cb
1,1,1,3-Tetrachloro-2,2,3-trifluoropropane
C3 HF3 Cl4
422-50-4
R-224
Trichlorotetrafluoropropane
C3 HF4 Cl3
134237-38-0
R-224ca
1,3,3-Trichloro-1,1,2,2-tetrafluoropropane
C3 HF4 Cl3
422-54-8
R-224cb
1,1,3-Trichloro-1,2,2,3-tetrafluoropropane
C3 HF4 Cl3
422-53-7
R-224cc
1,1,1-Trichloro-2,2,3,3-tetrafluoropropane
C3 HF4 Cl3
422-51-5
R-225
Dichloropentafluoropropane
C3 HF5 Cl2
127564-92-5
R-225aa
2,2-Dichloro-1,1,1,3,3-pentafluoropropane
C3 HF5 Cl2
128903-21-9
R-225ba
2,3-Dichloro-1,1,1,2,3-pentafluoropropane
C3 HF5 Cl2
422-48-0
R-225bb
1,2-Dichloro-1,1,2,3,3-pentafluoropropane
C3 HF5 Cl2
422-44-6
R-225ca
3,3-Dichloro-1,1,1,2,2-pentafluoropropane
C3 HF5 Cl2
422-56-0
R-225cb
1,3-Dichloro-1,1,2,2,3-pentafluoropropane
C3 HF5 Cl2
507-55-1
R-225cc
1,1-Dichloro-1,2,2,3,3-pentafluoropropane
C3 HF5 Cl2
13474-88-9
R-225da
1,2-Dichloro-1,1,3,3,3-pentafluoropropane
C3 HF5 Cl2
431-86-7
R-225ea
1,3-Dichloro-1,1,2,3,3-pentafluoropropane
C3 HF5 Cl2
136013-79-1
R-225eb
1,1-Dichloro-1,2,3,3,3-pentafluoropropane
C3 HF5 Cl2
111512-56-2
R-226
Chlorohexafluoropropane
C3 HF6 Cl
134308-72-8
R-226ba
2-Chloro-1,1,1,2,3,3-hexafluoropropane
C3 HF6 Cl
51346-64-6
R-226ca
3-Chloro-1,1,1,2,2,3-hexafluoropropane
C3 HF6 Cl
422-57-1
R-226cb
1-Chloro-1,1,2,2,3,3-hexafluoropropane
C3 HF6 Cl
422-55-9
R-226da
2-Chloro-1,1,1,3,3,3-hexafluoropropane
C3 HF6 Cl
431-87-8
R-226ea
1-Chloro-1,1,2,3,3,3-hexafluoropropane
C3 HF6 Cl
359-58-0
R-227ca
1,1,2,2,3,3,3-Heptafluoropropane
C3 HF7
2252-84-8
R-227ca2
Trifluoromethyl 1,1,2,2-tetrafluoroethyl ether
C3 HF7 O
2356-61-8
R-227ea
1,1,1,2,3,3,3-Heptafluoropropane
C3 HF7
431-89-0
R-227me
Trifluoromethyl 1,2,2,2-tetrafluoroethyl ether
C3 HF7 O
2356-62-9
R-231
Pentachlorofluoropropane
C3 H2 FCl5
134190-48-0
R-232
Tetrachlorodifluoropropane
C3 H2 F2 Cl4
134237-39-1
R-232ca
1,1,3,3-Tetrachloro-2,2-difluoropropane
C3 H2 F2 Cl4
1112-14-7
R-232cb
1,1,1,3-Tetrachloro-2,2-difluoropropane
C3 H2 F2 Cl4
677-54-3
R-233
Trichlorotrifluoropropane
C3 H2 F3 Cl3
134237-40-4
R-233ca
1,1,3-Trichloro-2,2,3-trifluoropropane
C3 H2 F3 Cl3
131221-36-8
R-233cb
1,1,3-Trichloro-1,2,2-trifluoropropane
C3 H2 F3 Cl3
421-99-8
R-233cc
1,1,1-Trichloro-2,2,3-trifluoropropane
C3 H2 F3 Cl3
131211-71-7
R-234
Dichlorotetrafluoropropane
C3 H2 F4 Cl2
127564-83-4
R-234aa
2,2-Dichloro-1,1,3,3-tetrafluoropropane
C3 H2 F4 Cl2
R-234ab
2,2-Dichloro-1,1,1,3-tetrafluoropropane
C3 H2 F4 Cl2
R-234ba
1,2-Dichloro-1,2,3,3-tetrafluoropropane
C3 H2 F4 Cl2
R-234bb
2,3-Dichloro-1,1,1,2-tetrafluoropropane
C3 H2 F4 Cl2
R-234bc
1,2-Dichloro-1,1,2,3-tetrafluoropropane
C3 H2 F4 Cl2
R-234ca
1,3-Dichloro-1,2,2,3-tetrafluoropropane
C3 H2 F4 Cl2
70341-81-0
R-234cb
1,1-Dichloro-2,2,3,3-tetrafluoropropane
C3 H2 F4 Cl2
4071-01-6
R-234cc
1,3-Dichloro-1,1,2,2-tetrafluoropropane
C3 H2 F4 Cl2
422-00-5
R-234cd
1,1-Dichloro-1,2,2,3-tetrafluoropropane
C3 H2 F4 Cl2
70192-63-1
R-234da
2,3-Dichloro-1,1,1,3-tetrafluoropropane
C3 H2 F4 Cl2
146916-90-7
R-234fa
1,3-Dichloro-1,1,3,3-tetrafluoropropane
C3 H2 F4 Cl2
76140-39-1
R-234fb
1,1-Dichloro-3,3,3,1-tetrafluoropropane
C3 H2 F4 Cl2
R-235
Chloropentafluoropropane
C3 H2 F5 Cl
134237-41-5
R-235ca
1-Chloro-1,2,2,3,3-pentafluoropropane
C3 H2 F5 Cl
28103-66-4
R-235cb
3-Chloro-1,1,1,2,3-pentafluoropropane
C3 H2 F5 Cl
422-02-6
R-235cc
1-Chloro-1,1,2,2,3-pentafluoropropane
C3 H2 F5 Cl
679-99-2
R-235da
2-Chloro-1,1,1,3,3-pentafluoropropane
C3 H2 F5 Cl
134251-06-2
R-235fa
1-Chloro-1,1,3,3,3-pentafluoropropane
C3 H2 F5 Cl
677-55-4
R-236cb
1,1,1,2,2,3-Hexafluoropropane
C3 H2 F6
677-56-5
R-236ea
1,1,1,2,3,3-Hexafluoropropane
C3 H2 F6
431-63-0
R-236fa
1,1,1,3,3,3-Hexafluoropropane
C3 H2 F6
690-39-1
R-236me
1,2,2,2-Tetrafluoroethyl difluoromethyl ether
C3 H2 F6 O
57041-67-5
R-FE-36
Hexafluoropropane
C3 H2 F6
359-58-0
R-241
Tetrachlorofluoropropane
C3 H3 FCl4
134190-49-1
R-242
Trichlorodifluoropropane
C3 H3 F2 Cl3
134237-42-6
R-243
Dichlorotrifluoropropane
C3 H3 F3 Cl2
134237-43-7
R-243ca
1,3-Dichloro-1,2,2-trifluoropropane
C3 H3 F3 Cl2
67406-68-2
R-243cb
1,1-Dichloro-2,2,3-trifluoropropane
C3 H3 F3 Cl2
70192-70-0
R-243cc
1,1-Dichloro-1,2,2-trifluoropropane
C3 H3 F3 Cl2
7125-99-7
R-243da
2,3-Dichloro-1,1,1-trifluoropropane
C3 H3 F3 Cl2
338-75-0
R-243ea
1,3-Dichloro-1,2,3-trifluoropropane
C3 H3 F3 Cl2
R-243ec
1,3-Dichloro-1,1,2-trifluoropropane
C3 H3 F3 Cl2
R-244
Chlorotetrafluoropropane
C3 H3 F4 Cl
134190-50-4
R-244ba
2-Chloro-1,2,3,3-tetrafluoropropane
C3 H3 F4 Cl
R-244bb
2-Chloro-1,1,1,2-tetrafluoropropane
C3 H3 F4 Cl
421-73-8
R-244ca
3-Chloro-1,1,2,2-tetrafluoropropane
C3 H3 F4 Cl
679-85-6
R-244cb
1-Chloro-1,2,2,3-tetrafluoropropane
C3 H3 F4 Cl
67406-66-0
R-244cc
1-Chloro-1,1,2,2-tetrafluoropropane
C3 H3 F4 Cl
421-75-0
R-244da
2-Chloro-1,1,3,3-tetrafluoropropane
C3 H3 F4 Cl
19041-02-2
R-244db
2-Chloro-1,1,1,3-tetrafluoropropane
C3 H3 F4 Cl
117970-90-8
R-244ea
3-Chloro-1,1,2,3-tetrafluoropropane
C3 H3 F4 Cl
R-244eb
1-Chloro-1,1,1,2-tetrafluoropropane
C3 H3 F4 Cl
R-244ec
1-Chloro-1,1,2,3-tetrafluoropropane
C3 H3 F4 Cl
R-244fa
3-Chloro-1,1,1,3-tetrafluoropropane
C3 H3 F4 Cl
R-244fb
1-Chloro-1,1,3,3-tetrafluoropropane
C3 H3 F4 Cl
2730-64-5
R-245ca
1,1,2,2,3-Pentafluoropropane
C3 H3 F5
679-86-7
R-245cb
Pentafluoropropane
C3 H3 F5
1814-88-6
R-245ea
1,1,2,3,3-Pentafluoropropane
C3 H3 F5
24270-66-4
R-245eb
1,1,1,2,3-Pentafluoropropane
C3 H3 F5
431-31-2
R-245fa
1,1,1,3,3-Pentafluoropropane
C3 H3 F5
460-73-1
R-245mc
Methyl pentafluoroethyl ether
C3 H3 F5 O
22410-44-2
R-245mf
Difluoromethyl 2,2,2-trifluoroethyl ether
C3 H3 F5 O
1885-48-9
R-245qc
Difluoromethyl 1,1,2-trifluoroethyl ether
C3 H3 F5 O
69948-24-9
R-251
Trichlorofluoropropane
C3 H4 FCl3
134190-51-5
R-252
Dichlorodifluoropropane
C3 H4 F2 Cl2
134190-52-6
R-252ca
1,3-Dichloro-2,2-difluoropropane
C3 H4 F2 Cl2
1112-36-3
R-252cb
1,1-Dichloro-2,2-difluoropropane
C3 H4 F2 Cl2
1112-01-2
R-252dc
1,2-Dichloro-1,1-difluoropropane
C3 H4 F2 Cl2
R-252ec
1,1-Dichloro-1,2-difluoropropane
C3 H4 F2 Cl2
R-253
Chlorotrifluoropropane
C3 H4 F3 Cl
134237-44-8
R-253ba
2-Chloro-1,2,3-trifluoropropane
C3 H4 F3 Cl
R-253bb
2-Chloro-1,1,2-trifluoropropane
C3 H4 F3 Cl
R-253ca
1-Chloro-2,2,3-trifluoropropane
C3 H4 F3 Cl
56758-54-4
R-253cb
1-Chloro-1,2,2-trifluoropropane
C3 H4 F3 Cl
70192-76-6
R-253ea
3-Chloro-1,1,2-trifluoropropane
C3 H4 F3 Cl
R-253eb
1-Chloro-1,2,3-trifluoropropane
C3 H4 F3 Cl
R-253ec
1-Chloro-1,1,2-trifluoropropane
C3 H4 F3 Cl
R-253fa
3-Chloro-1,3,3-trifluoropropane
C3 H4 F3 Cl
R-253fb
3-Chloro-1,1,1-trifluoropropane
C3 H4 F3 Cl
460-35-5
R-253fc
1-Chloro-1,1,3-trifluoropropane
C3 H4 F3 Cl
R-254cb
1,1,2,2-Tetrafluoropropane
C3 H4 F4
40723-63-5
R-254pc
Methyl 1,1,2,2-tetrafluoroethyl ether
C3 H4 F4 O
425-88-7
R-261
Dichlorofluoropropane
C3 H5 FCl2
134237-45-9
R-261ba
1,2-Dichloro-2-fluoropropane
C3 H5 FCl2
420-97-3
R-262
Chlorodifluoropropane
C3 H5 F2 Cl
134190-53-7
R-262ca
1-Chloro-2,2-difluoropropane
C3 H5 F2 Cl
420-99-5
R-262fa
3-Chloro-1,1-difluoropropane
C3 H5 F2 Cl
R-262fb
1-Chloro-1,3-difluoropropane
C3 H5 F2 Cl
R-263
Trifluoropropane
C3 H5 F3
R-271
Chlorofluoropropane
C3 H6 FCl
134190-54-8
R-271b
2-Chloro-2-fluoropropane
C3 H6 FCl
420-44-0
R-271d
2-Chloro-1-fluoropropane
C3 H6 FCl
R-271fb
1-Chloro-1-fluoropropane
C3 H6 FCl
R-272
Difluoropropane
C3 H6 F2
R-281
Fluoropropane
C3 H7 F
R-290
Propane
C3 H8
74-98-6
R-C316
Dichlorohexafluorocyclobutane
C4 Cl2 F6
356-18-3
R-C317
Chloroheptafluorocyclobutane
C4 ClF7
377-41-3
R-C318
Octafluorocyclobutane
C4 F8
115-25-3
R-3-1-10
Decafluorobutane
C4 F10
R-329ccb
375-17-7
R-338eea
75995-72-1
R-347ccd
662-00-0
R-347mcc
Perfluoropropyl methyl ether
C4 H3 F7 O
375-03-1
R-347mmy
Perfluoroisopropyl methyl ether
C4 H3 F7 O
22052-84-2
R-356mcf
R-356mffm
R-365mfc
1,1,1,3,3-Pentafluorobutane
C4 H5 F5
R-
Tetradecafluorohexane
C6 F14
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-125/R-290/R-22 (60/2/38)
R-402B
R-125/R-290/R-22 (38/2/60)
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 (23/25/52)
R-407D
R-32/R-125/R-134a (15/15/70)
R-407E
R-32/R-125/R-134a (25/15/60)
R-408A
R-125/R-143a/R-22 (7/46/47)
R-409A
R-22/R-124/R-142b (60/25/15)
R-409B
R-22/R-124/R-142b (65/25/10)
R-410A
R-32/R-125 (50/50)
R-410B
R-32/R-125 (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-413A
R-218/R-134a/R-600a (9/88/3)
R-414A
R-22/R-124/R-600a/R-142b (51/28.5/4.0/16.5)
R-414B
R-22/R-124/R-600a/R-142b (50/39/1.5/9.5)
R-415A
R-22/R-152a (82/18)
R-415B
R-22/R-152a (25/75)
R-416A
R-134a/R-124/R-600 (59/39.5/1.5)
R-417A
R-125/R-134a/R-600 (46.6/50.0/3.4)
R-418A
R-290/R-22/R-152a (1.5/96/2.5)
R-419A
R-125/R-134a/R-E170 (77/19/4)
R-420A
R-134a/R-142b (88/12)
R-421A
R-125/R-134a (58/42)
R-421B
R-125/R-134a (85/15)
R-422A
R-125/R-134a/R-600a (85.1/11.5/3.4)
R-422B
R-125/R-134a/R-600a (55/42/3)
R-422C
R-125/R-134a/R-600a (82/15/3)
R-422D
R-125/R-134a/R-600a (65.1/31.5/3.4)
R-423A
R-134a/R-227ea (52.5/47.5)
R-424A
R-125/R-134a/R-600a/R-600/R-601a (50.5/47/.9/1/.6)
R-425A
R-32/R-134a/R-227ea (18.5/69.5/12)
R-426A
R-125/R-134a/R-600/R-601a (5.1/93/1.3/.6)
R-427A
R-32/R-125/R-143a/R-134a (15/25/10/50)
R-428A
R-125/R-143a/R-290/R-600a (77.5/20/.6/1.9)
R-500
R-12/R-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-507A
R-125/R-143a (50/50)
R-508A
R-23/R-116 (39/61)
R-508B
R-23/R-116 (46/54)
R-509A
R-22/R-218 (44/56)
R-600
Butane
CH3 CH2 CH2 CH3
106-97-8
R-600a
Isobutane
CH(CH3 )2 CH3
75-28-5
R-601
Pentane
CH3 CH2 CH2 CH2 CH3
109-66-0
R-601a
Isopentane
(CH3 )2 CHCH2 CH3
78-78-4
R-610
Diethyl ether
C2 H5 OC2 H5
60-29-7
R-611
Methyl formate
C2 H4 O
107-31-3
R-630
Methylamine
CH2 NH2
74-89-5
R-631
Ethylamine
C2 H5 NH2
75-04-7
R-702
Hydrogen
H2
1333-74-0
R-704
Helium
He
7440-59-7
R-717
Ammonia
NH3
7664-41-7
R-718
Water
H2 O
7732-18-5
R-720
Neon
Ne
7440-01-9
R-728
Nitrogen
N2
7727-37-9
R-732
Oxygen
O2
7782-44-7
R-740
Argon
Ar
7440–37–1
R-744
Carbon dioxide
CO2
124-38-9
R-744A
Nitrous oxide
N2 O
10024-97-2
R-764
Sulfur dioxide
SO2
7446-09-5
R-784
Krypton
Kr
7439-90-9
R-1112a
1,1-Dichloro-2,2-difluoroethylene
C2 Cl2 F2
79-35-6
R-1113
Chlorotrifluoroethylene
C2 ClF3
79-38-9
R-1114
Tetrafluoroethylene
C2 F4
116-14-3
R-1120
Trichloroethylene
C2 HCl3
79-01-6
R-1130
cis-1,2-Dichloroethylene
C2 H2 Cl2
156-59-2
R-1132
1,1-Difluoroethylene
C2 H2 F2
75-38-7
R-1140
Chloroethylene
C2 H3 Cl
75-01-4
R-1141
Fluoroethylene
C2 H3 F
75-02-5
R-1150
Ethylene
C2 H4
74-85-1
R-1216
Hexafluoropropene
C3 F6
116-15-4
R-
Hexafluoropropene trimer
(C3 F6 )3
6792-31-0
R-1270
Propylene
C3 H6
115-07-1
See also