Refrigerants shall be classified in accordance with ASHRAE 34 as listed in Table 18-28-1103.1.
Chemical Refrigerant | Formula | Chemical Name of Blend | Amount of Refrigerant per Occupied Space | |||
Refrigerant Classification | Pounds per 1,000 cubic feet | ppm | g/m3 | |||
Chemical Refrigerant | Formula | Chemical Name of Blend | Amount of Refrigerant per Occupied Space | |||
Refrigerant Classification | Pounds per 1,000 cubic feet | ppm | g/m3 | |||
R-11 d | CCl3F | trichlorofluoromethane | A1 | 0.39 | 1,100 | 6.2 |
R-12 d | CCl2F2 | dichlorodifluoromethane | A1 | 5.6 | 18,000 | 90 |
R-13 d | CClF3 | chlorotrifluoromethane | A1 | – | – | – |
R-13B1 d | CBrF3 | bromotrifluoromethane | A1 | – | – | – |
R-14 | CF4 | tetrafluoromethane (carbon tetrafluoride) | A1 | 25 | 110,000 | 400 |
R-22 | CHClF2 | chlorodifluoromethane | A1 | 13 | 59,000 | 210 |
R-23 | CHF3 | trifluoromethane (fluoroform) | A1 | 7.3 | 41,000 | 120 |
R-30 | CH2Cl2 | dichloromethane (methylene chloride) | B1 | – | – | – |
R-32 | CH2F2 | difluoromethane (methylene fluoride) | A2 f | 4.8 | 36,000 | 77 |
R-40 | CH3Cl | chloromethane (methyl chloride) | B2 | – | – | – |
R-50 | CH4 | Methane | A3 | – | – | – |
R-113 d | CCl2FCClF2 | 1,1,2-trichloro-1,2,2- trifluoroethane | A1 | 1.2 | 2,600 | 20 |
R-114 d | CClF2CClF2 | 1,2-dichloro-1,1,2,2- tetrafluoroethane | A1 | 8.7 | 20,000 | 140 |
R-115 | CClF2CF3 | chloropentafluoroethane | A1 | 47 | 120,000 | 760 |
R-116 | CF3CF3 | hexafluoroethane | A1 | 34 | 97,000 | 550 |
R-123 | CHCl2CF3 | 2,2-dichloro-1,1,1- trifluoroethane | B1 | 3.5 | 9,100 | 57 |
R-124 | CHClFCF3 | 2-chloro-1,1,1,2- tetrafluoroethane | A1 | 3.5 | 10,000 | 56 |
R-125 | CHF2CF3 | pentafluoroethane | A1 | 23 | 75,000 | 370 |
R-134a | CH2FCF3 | 1,1,1,2-tetrafluoroethane | A1 | 13 | 50,000 | 210 |
R-141b | CH3CCl2F | 1,1-dichloro-1-fluoroethane | – | 0.78 | 2,600 | 12 |
R-142b | CH3CClF2 | 1-chloro-1,1-difluoroethane | A2 | 5.1 | 20,000 | 83 |
R-143a | CH3CF3 | 1,1,1-trifluoroethane | A2 f | 4.5 | 21,000 | 70 |
R-152a | CH3CHF2 | 1,1-difluoroethane | A2 | 2.0 | 12,000 | 32 |
R-170 | CH3CH3 | Ethane | A3 | 0.54 | 7,000 | 8.7 |
R-E170 | CH3OCH3 | Methoxymethane (dimethyl ether) | A3 | 1.0 | 8,500 | 16 |
R-218 | CF3CF2CF3 | octafluoropropane | A1 | 43 | 90,000 | 690 |
R-227ea | CF3CHFCF3 | 1,1,1,2,3,3,3- heptafluoropropane | A1 | 36 | 84,000 | 580 |
R-236fa | CF3CH2CF3 | 1,1,1,3,3,3-hexafluoropropane | A1 | 21 | 55,000 | 340 |
R-245fa | CHF2CH2CF3 | 1,1,1,3,3-pentafluoropropane | B1 | 12 | 34,000 | 190 |
R-290 | CH3CH2CH3 | propane | A3 | 0.56 | 5,300 | 9.5 |
R-C318 | -(CF2)4- | octafluorocyclobutane | A1 | 41 | 80,000 | 660 |
R-400 d | zeotrope | R-12/114 (50.0/50.0) | A1 | 10 | 28,000 | 160 |
R-400 d | zeotrope | R-12/114 (60.0/40.0) | A1 | 11 | 30,000 | 170 |
R-401A | zeotrope | R-22/152a/124 (53.0/13.0/34.0) | A1 | 6.6 | 27,000 | 110 |
R-401B | zeotrope | R-22/152a/124 (61.0/11.0/28.0) | A1 | 7.2 | 30,000 | 120 |
R-401C | zeotrope | R-22/152a/124 (33.0/15.0/52.0) | A1 | 5.2 | 20,000 | 84 |
R-402A | zeotrope | R-125/290/22 (60.0/2.0/38.0) | A1 | 17 | 66,000 | 270 |
R-402B | zeotrope | R-125/290/22 (38.0/2.0/60.0) | A1 | 15 | 63,000 | 240 |
R-403A | zeotrope | R-290/22/218 (5.0/75.0/20.0) | A2 | 7.6 | 33,000 | 120 |
R-403B | zeotrope | R-290/22/218 (5.0/56.0/39.0) | A1 | 18 | 70,000 | 290 |
R-404A | zeotrope | R-125/143a/134a (44.0/52.0/4.0) | A1 | 31 | 130,000 | 500 |
R-405A | zeotrope | R-22/152a/142b/C318 (45.0/7.0/5.5/2.5) | – | 16 | 57,000 | 260 |
R-406A | zeotrope | R-22/600a/142b (55.0/4.0/41.0) | A2 | 4.7 | 21,000 | 25 |
R-407A | zeotrope | R-32/125/134a (20.0/40.0/40.0) | A1 | 19 | 83,000 | 300 |
R-407B | zeotrope | R-32/125/134a (10.0/70.0/20.0) | A1 | 21 | 79,000 | 330 |
R-407C | zeotrope | R-32/125/134a (23.0/25.0/52.0) | A1 | 18 | 81,000 | 290 |
R-407D | zeotrope | R-32/125/134a (15.0/15.0/70.0) | A1 | 16 | 68,000 | 250 |
R-407E | zeotrope | R-32/125/134a (25.0/15.0/60.0) | A1 | 17 | 80,000 | 280 |
R-407F | zeotrope | R-32/125/134a (30.0/30.0/40.0) | A1 | 20 | 95,000 | 320 |
R-407G | zeotrope | R-32/125/134a (2.5/2.5/95.0) | A1 | 13 | 52,000 | 210 |
R-407H | zeotrope | R-32/125/134a (32.5/15.0/52.5) | A1 | 19 | 92,000 | 300 |
R-408A | zeotrope | R-125/143a/22 (7.0/46.0/47.0) | A1 | 21 | 95,000 | 340 |
R-409A | zeotrope | R-22/124/142b (60.0/25.0/15.0) | A1 | 7.1 | 29,000 | 110 |
R-409B | zeotrope | R-22/124/142b (65.0/25.0/10.0) | A1 | 7.3 | 30,000 | 120 |
R-410A | zeotrope | R-32/125 (50.0/50.0) | A1 | 26 | 140,000 | 420 |
R-410B | zeotrope | R-32/125 (45.0/55.0) | A1 | 27 | 140,000 | 430 |
R-411A | zeotrope | R-127/22/152a (1.5/87.5/11.0) | A2 | 2.9 | 14,000 | 46 |
R-411B | zeotrope | R-1270/22/152a (3.0/94.0/3.0) | A2 | 2.8 | 13,000 | 45 |
R-412A | zeotrope | R-22/218/142b (70.0/5.0/25.0) | A2 | 5.1 | 22,000 | 82 |
R-413A | zeotrope | R-218/134a/600a (9.0/88.0/3.0) | A2 | 5.8 | 22,000 | 94 |
R-414A | zeotrope | R-22/124/600a/142b (51.0/28.5/4.0/16.5) | A1 | 6.4 | 26,000 | 100 |
R-414B | zeotrope | R-22/124/600a/142b (50.0/39.0/1.5/9.5) | A1 | 6.0 | 23,000 | 95 |
R-415A | zeotrope | R-22/152a (82.0/18.0) | A2 | 2.9 | 14,000 | 47 |
R-415B | zeotrope | R-22/152a (25.0/75.0) | A2 | 2.1 | 12,000 | 34 |
R-416A | zeotrope | R-134a/124/600 (59.0/39.5/1.5) | A1 | 3.9 | 14,000 | 62 |
R-417A | zeotrope | R-125/134a/600 (46.6/50.0/3.4) | A1 | 3.5 | 13,000 | 56 |
R-417B | zeotrope | R-125/134a/600 (79.0/18.3/2.7) | A1 | 4.3 | 15,000 | 70 |
R-417C | zeotrope | R-125/134a/600 (19.5/78.8/1.7) | A1 | 5.4 | 21,000 | 87 |
R-418A | zeotrope | R-290/22/152a (1.5/96.0/2.5) | A2 | 4.8 | 22,000 | 77 |
R-419A | zeotrope | R-125/134a/E170 (77.0/19.0/4.0) | A2 | 4.2 | 15,000 | 67 |
R-419B | zeotrope | R-125/134a/E170 (48.5/48.0/3.5) | A2 | 4.6 | 17,000 | 74 |
R-420A | zeotrope | R-134a/142b (88.0/12.0) | A1 | 12 | 45,000 | 190 |
R-421A | zeotrope | R-125/134a (58.0/42.0) | A1 | 17 | 61,000 | 280 |
R-421B | zeotrope | R-125/134a (85.0/15.0) | A1 | 21 | 69,000 | 330 |
R-422A | zeotrope | R-125/134a/600a (85.1/11.5/3.4) | A1 | 18 | 63,000 | 290 |
R-422B | zeotrope | R-125/134a/600a (55.0/42.0/3.0) | A1 | 16 | 56,000 | 250 |
R-422C | zeotrope | R-125/134a/600a (82.0/15.0/3.0) | A1 | 18 | 62,000 | 290 |
R-422D | zeotrope | R-125/134a/600a (65.1/31.5/3.4) | A1 | 16 | 58,000 | 260 |
R-422E | zeotrope | R-125/134a/600a (58.0/39.3/2.7) | A1 | 16 | 57,000 | 260 |
R-423A | zeotrope | R-134a/227ea (52.5/47.5) | A1 | 19 | 59,000 | 310 |
R-424A | zeotrope | R-125/134a/600a/600/601a (50.5/47.0/0.9/1.0/0.6) | A1 | 6.2 | 23,000 | 100 |
R-425A | zoetrope | R-32/134a/227ea (18.5/69.5/12.0) | A1 | 16 | 72,000 | 260 |
R-426A | zeotrope | R-125/134a/600a/601a (5.1/93.0/1.3/0.6) | A1 | 5.2 | 20,000 | 83 |
R-427A | zeotrope | R-32/125/143a/134a (15.0/25.0/10.0/50.0) | A1 | 18 | 79,000 | 290 |
R-428A | zeotrope | R-125/143a/290/600a (77.5/20.0/0.6/1.9) | A1 | 23 | 83,000 | 370 |
R-429A | zeotrope | R-E170/152a/600a (60.0/10.0/30.0) | A3 | 0.81 | 6,300 | 13 |
R-430A | zeotrope | R-152a/600a (76.0/24.0) | A3 | 1.3 | 8,000 | 21 |
R-431A | zeotrope | R-290/152a (71.0/29.0) | A3 | 0.69 | 5,500 | 11 |
R-432A | zeotrope | R-1270/E170 (80.0/20.0) | A3 | 0.13 | 1,200 | 2.1 |
R-433A | zeotrope | R-1270/290 (30.0/70.0) | A3 | 0.34 | 3,100 | 5.5 |
R-433B | zeotrope | R-1270/290 (5.0-95.0) | A3 | 0.51 | 4,500 | 8.1 |
R-433C | zeotrope | R-1270/290 (25.0-75.0) | A3 | 0.41 | 3,600 | 6.6 |
R-434A | zeotrope | R-125/143a/600a (63.2/18.0/16.0/2.8) | A1 | 20 | 73,000 | 320 |
R-435A | zeotrope | R-E170/152a (80.0/20.0) | A3 | 1.1 | 8,500 | 17 |
R-436A | zeotrope | R-290/600a (56.0/44.0) | A3 | 0.50 | 4,000 | 8.1 |
R-436B | zeotrope | R-290/600a (52.0/48.0) | A3 | 0.51 | 4,000 | 8.1 |
R-437A | zeotrope | R-125/134a/600/601 (19.5/78.5/1.4/0.6) | A1 | 5.0 | 19,000 | 82 |
R-438A | zeotrope | R-32/125/134a/600/601a (8.5/45.0/44.2/1.7/0.6) | A1 | 4.9 | 20,000 | 79 |
R-439A | zeotrope | R-32/125/600a (50.0/47.0/3.0) | A2 | 4.7 | 26,000 | 76 |
R-440A | zeotrope | R-290/134a/152a (0.6/1.6/97.8) | A2 | 1.9 | 12,000 | 31 |
R-441A | zeotrope | R-170/290/600a/600 (3.1/54.8/6.0/36.1) | A3 | 0.39 | 3,200 | 6.3 |
R-442A | zeotrope | R-32/125/134a/152a/227ea (31.0/31.0/30.0/3.0/5.0) | A1 | 21 | 100,000 | 330 |
R-443A | zeotrope | R-1270/290/600a (55.0/40.0/5.0) | A3 | 0.19 | 1,700 | 3.1 |
R-444A | zeotrope | R-32/152a/1234ze(E) (12.0/5.0/83.0) | A2 f | 5.1 | 21,000 | 81 |
R-444B | zeotrope | R-32/152a/1234ze(E) (41.5/10.0/48.5) | A2 f | 4.3 | 23,000 | 69 |
R-445A | zeotrope | R-744/134a/1234ze(E) (6.0/9.0/85.0) | A2 f | 4.2 | 16,000 | 67 |
R-446A | zeotrope | R-32/1234ze(E)/600 (68.0/29.0/3.0) | A2 f | 2.5 | 16,000 | 39 |
R-447A | zeotrope | R-32/125/1234ze(E) (68.0/3.5/28.5) | A2 f | 2.6 | 16,000 | 42 |
R-447B | zeotrope | R-32/125/1234ze(E) (68.0/8.0/24.0) | A2 f | 23 | 30,000 | 360 |
R-448A | zeotrope | R- 32/125/1234yf/134a/1234ze(E) (26.0/26.0/20.0/21.0/7.0) | A1 | 24 | 110,000 | 390 |
R-449A | zeotrope | R-32/125/1234yf/134a (24.3/24.7/25.3/25.7) | A1 | 23 | 100,000 | 370 |
R-450A | zeotrope | R-134a/1234ze(E) (42.0/58.0) | A1 | 20 | 72,000 | 320 |
R-451A | zeotrope | R-1234yf/134a (89.8/10.2) | A2 f | 5.3 | 18,000 | 81 |
R-451B | zeotrope | R-1234yf/134a (88.8/11.2) | A2 f | 5.3 | 18,000 | 81 |
R-452A | zeotrope | R-32/125/1234yf (11.0/59.0/30.0) | A1 | 27 | 100,000 | 440 |
R-452B | zeotrope | R-32/125/1234yf (67.0/7.0/26.0) | A2 f | 23 | 30,000 | 360 |
R-452C | zeotrope | R-32/125/1234yf (12.5/61.0/26.5) | A1 | 27 | 100,000 | 430 |
R-453A | zeotrope | R-32/125/134a/227ea/600/601a (20.0/20.0/53.8/5.0/0.6/0.6) | A1 | 7.8 | 34,000 | 120 |
R-454A | zeotrope | R-32/1234yf (35.0/65.0) | A2 f | 28 | 16,000 | 450 |
R-454B | zeotrope | R-32/1234yf (68.9/31.1) | A2 f | 22 | 19,000 | 360 |
R-454C | zeotrope | R-32/1234yf (21.5/78.5) | A2 f | 29 | 19,000 | 460 |
R-455A | zeotrope | R-744/32/1234yf (3.0/21.5/75.5) | A2 f | 23 | 30,000 | 380 |
R-456A | zeotrope | R-32/134a/1234ze(E) (6.0/45.0/49.0) | A1 | 20 | 77,000 | 320 |
R-457A | zeotrope | R-32/1234yf/152a (18.0/70.0/12.0) | A2 f | 25 | 15,000 | 400 |
R-458A | zeotrope | R-32/125/134a/227ea/236fa (20.5/4.0/61.4/13.5/0.6) | A1 | 18 | 76,000 | 280 |
R-459A | zeotrope | R-32/1234yf/1234ze(E) (68.0/26.0/6.0) | A2 f | 23 | 27,000 | 360 |
R-459B | zeotrope | R-32/1234yf/1234ze(E) (21.0/69.0/10.0) | A2 f | 30 | 16,000 | 470 |
R-460A | zeotrope | R-32/125/134a/1234ze(E) (12.0/52.0/14.0/22.0) | A1 | 24 | 92,000 | 380 |
R-460B | zeotrope | R-32/125/134a/1234ze(E) (28.0/25.0/20.0/27.0) | A1 | 25 | 120,000 | 400 |
R-461A | zeotrope | R-125/143a/134a/227ea/600a (55.0/5.0/32.0/5.0/3.0) | A1 | 17 | 61,000 | 270 |
R-462A | zeotrope | R-32/125/143a/134a/600 (9.0/42.0/2.0/44.0/3.0) | A2 | 3.9 | 16,000 | 62 |
R-463A | zeotrope | R-744/32/125/1234yf/134a (6.0/36.0/30.0/14.0/14.0) | A1 | 19 | 98,000 | 300 |
R-500 | azeotrope | R-12/152a (73.8/26.2) | A1 | 7.6 | 30,000 | 120 |
R-501 d | azeotrope | R-22/12 (75.0/25.0) | A1 | 13 | 54,000 | 210 |
R-502 | azeotrope | R-22/115 (48.8/51.2) | A1 | 21 | 73,000 | 330 |
R-503 | azeotrope | R-23/13 (40.1/59.9) | – | – | – | – |
R-504 d | azeotrope | R-32/115 (48.2/51.8) | – | 28 | 140,000 | 450 |
R-507A | azeotrope | R-125/143a (50.0/50.0) | A1 | 32 | 130,000 | 520 |
R-508A | azeotrope | R-23/116 (39.0/61.0) | A1 | 14 | 55,000 | 220 |
R-508B | azeotrope | R-23/116 (46.0/54.0) | A1 | 13 | 52,000 | 200 |
R-509A | azeotrope | R-22/218 (44.0/56.0) | A1 | 24 | 75,000 | 390 |
R-510A | azeotrope | R-E170/600a (88.0/12.0) | A3 | 0.87 | 7,300 | 14 |
R-511A | azeotrope | R-290/E170 (95.0/5.0) | A3 | 0.59 | 5,300 | 9.5 |
R-512A | azeotrope | R-134a/152a (5.0/95.0) | A2 | 1.9 | 11,000 | 31 |
R-513A | azeotrope | R-1234yf/134a (56.0/44.0) | A1 | 20 | 72,000 | 320 |
R-600 | CH3CH2CH2CH3 | butane | A3 | 0.15 | 1,000 | 2.4 |
R-600a | CH(CH3)2CH3 | 2-methylpropane (isobutane) | A3 | 0.59 | 4,000 | 9.6 |
R-601 | CH3CH2CH2 CH2CH3 | pentane | A3 | 0.18 | 1,000 | 2.9 |
R-601a | (CH3)2CHCH2CH3 | 2-methylbutane (isopentane) | A3 | 0.18 | 1,000 | 2.9 |
R-610 | CH3CH2OCH2CH3 | ethoxyethane (ethyl ether) | – | – | – | – |
R-611 | HCOOCH3 | methyl formate | B2 | – | – | – |
R-717 | NH3 | ammonia | B2 f | 0.014 | 320 | 0.22 |
R-718 | H2O | water | A1 | – | – | – |
R-744 | CO2 | carbon dioxide | A1 | 4.5 | 40,000 | 72 |
R-1150 | CH2=CH2 | ethene (ethylene) | A3 | – | – | – |
R-1233zd(E) | CF3CH=CHCl | trans-1-chloro-3,3,3-trifluoro-1- propene | A1 | 5.3 | 16,000 | 85 |
R-1234yf | CF3CF=CH2 | 2,3,3,3-tetrafluoro-1 propene | A2 f | 4.7 | 16,000 | 75 |
R-1234ze(E) | CF3CH=CHF | trans-1,3,3,3-tetrafluoro-1- propene | A2 f | 4.7 | 16,000 | 75 |
R-1270 | CH3CH=CH2 | Propene (propylene) | A3 | 0.1 | 1,000 | 1.7 |
For SI: 1 pound = 0.454 kg, 1 cubic foot = 0.0283 m
3
a. [Reserved]
b. [Reserved]
c. [Reserved]
d. Class I ozone depleting substance; prohibited for new installations.
e. [Reserved]
f. The ASHRAE Standard 34 flammability classification for this refrigerant is 2L, which is a subclass of Class 2.
(Amend Coun. J. 9-14-21, p. 35949, Art. XI, § 7)