Ozone Protection Hotline (800) 296-1996
Substitutes are reviewed on the basis of ozone
depletion potential, global warming potential, toxicity,
flammability, and exposure potential. Lists of acceptable
and unacceptable substitutes are updated several times
each year. A
chronological list of SNAP
updates is available from the hotline. If your
browser is unable to display tables, please call the
hotline for a free paper copy.
Unacceptable substitutes
Note: SNAP-related information published in the
Federal Register takes precedence over all
information on this page.
Acceptable Substitutes for CFCs (class I ODS) in Refrigerated Transport
HCFC-22 |
|
12,
502 |
R, N |
Ikon
A |
|
12 |
R, N |
Ikon
B |
|
12 |
R, N |
THR-02 |
|
12 |
R, N |
HFC-134a |
|
12 |
R, N |
R-401A,
R-401B |
MP-39,
MP-66 |
12 |
R, N |
R-402A,
R-402B |
HP-80,
HP-81 |
502 |
R, N |
R-404A |
HP-62 |
502, 12, 500 |
R, N |
R-406A |
GHG |
12,
500 |
R |
R-407A,
R-407B |
Klea
407A, 407B |
502 |
R, N |
R-408A
(HCFC Blend Epsilon) |
|
502 |
R |
R-409A
(HCFC Blend Gamma) |
|
12 |
R |
R-411A,
R-411B |
|
12, 500,
502 |
R, N |
R-507 |
AZ-50 |
502 |
R, N |
Free
Zone (HCFC Blend Delta) |
Free Zone
/ RB-276 |
12 |
R, N |
Freeze
12 |
Freeze
12 |
12 |
R, N |
FRIGC
FR-12 (HCFC Blend Beta) |
FRIGC
FR-12 |
12,
500 |
R, N |
GHG-X4 |
GHG-X4,
Autofrost, Chill-it |
12,
500 |
R, N |
GHG-X5 |
GHG-X5 |
12,
500 |
R, N |
GHG-HP
(HCFC Blend Lambda) |
GHG-HP |
12 |
R, N |
G2018C |
G2018C |
12, 500,
502 |
R, N |
Hot
Shot |
Hot Shot,
Kar Kool |
12,
500 |
R, N |
HCFC-22/HCFC-142b |
|
12 |
R, N |
THR-04 |
THR-04 |
502 |
R, N |
FOR12A |
FOR12A |
12 |
R, N |
FOR12B |
FOR12B |
12 |
R, N |
SP34E |
SP34E |
12 |
R, N |
HFC-134a/HBr (92/8) |
|
12,
502 |
N |
Direct
Nitrogen Expansion |
|
all |
N |
Cryogenic Transport Refrigeration System |
Cryo-Mechanical |
12,
502 |
N |
Stirling
Cycle |
|
all |
N |
Self-chilling cans using CO
2 |
|
12, 500,
502 |
N |
RS-24
(2002 formulation) |
|
12 |
R, N |
NU-22 |
NU-22 |
502 |
R, N |
R-407C |
Suva
407C, Klea 407C |
502 |
R, N |
R-421B |
Choice
R421B |
12,
502 |
R, N |
R-426A |
RS-24 |
12 |
R, N |
R-422C |
ICOR XLT1 |
502 |
R, N |
R-428A |
RS-52 |
502 |
R, N |
Key: R = Retrofit Uses, N = New
Uses
Acceptable Substitutes for HCFCs (class II ODS)
in Refrigerated Transport
R-410A,
R-410B |
AZ-20, Suva
9100, Puron |
|
N |
THR-03 |
|
|
R, N |
ISCEON
59, NU-22, R-417A |
Isceon 59,
NU-22 |
|
R, N |
R-407C |
Suva 9000,
Klea 66 |
|
R, N |
R-507,
R-507A |
AZ-50 |
|
R, N |
R-404A |
HP62 |
|
R, N |
R-125/134a/600a (28.1/70.0/1.9) |
|
|
R, N |
Self-Chilling cans using CO
2 |
|
|
R, N |
RS-44
(2003 formulation) |
|
22 |
R, N |
ISCEON
79 |
ISCEON
79 |
|
R, N |
R-421B |
Choice
R421B |
22 |
R, N |
R-422D |
ISCEON
MO29 |
22 |
R, N |
R-424A |
RS-44 |
22 |
R, N |
R-426A |
RS-24 |
22 |
R, N |
KDD5 |
KDD5 |
22 |
R, N |
RS-45 (ASHRAE proposed designation: R-434A) |
RS-45 |
22 |
R, N |
R-428A |
RS-52 |
22, 22 blends including R-402A, -403A, -408A, and -411B |
R, N |
R-125/290/134a/600a (55.0/1.0/42.5/1.5) |
ICOR AT-22 |
22 |
R, N |
R-422B |
XAC1, NU-22B |
22 |
R, N |
R-422C |
XLT1 |
22, 402A, 402B, 408A |
R, N |
Key: R = Retrofit Uses, N = New
Uses
|