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 also available.
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 Very Low Temp Refrigeration
HFC-23 |
|
12, 13,
13B1, 503 |
R, N |
R-403B |
Isceon
69-L |
13, 13B1,
503 |
R, N
|
R-508A
(PFC Blend Alpha) |
Klea
5R3 |
13, 13B1,
503 |
R, N |
R-508B |
Suva
95 |
13, 13B1,
503 |
R, N |
Carbon
Dioxide |
|
13, 13B1,
503 |
R, N |
NARM-502 |
|
13, 13B1,
503 |
R, N |
HFE-7100
as a secondary heat transfer fluid in not-in-kind
systems |
|
13, 13B1,
503 |
N |
HFE-7200
as a secondary heat transfer fluid in not-in-kind
systems |
|
13, 13B1,
503 |
N |
PFC-330ST, PFC-550HC, PFC-660HC, PFC-1100HC,
PFC-1100LT, PGC-100, PGC-150, PFC-331ST, PFC-551HC,
PFC-661HC, PFC-1101HC and PGC-151 |
PFC-330ST,
PFC-550HC, PFC-660HC, PFC-1100HC, PFC-1100LT,
PGC-100, PGC-150, PFC-331ST, PFC-551HC, PFC-661HC,
PFC-1101HC and PGC-151 |
13, 113,
114 and blends thereof |
R, N |
PFC-1102HC, PFC-662HC, PFC-552HC and FLC-15 |
PFC-1102HC, PFC-662HC, PFC-552HC and FLC-15 |
13, 113,
114, blends thereof |
N |
ISCEON
89 |
ISCEON
89 |
R-13B1 |
R, N |
R-422C |
ICOR XLT1 |
502 |
R, N |
HFC-245fa |
Genetron® 245fa |
11, 114 |
R, N |
Key: R = Retrofit Uses, N = New
Uses
Acceptable Substitutes for HCFCs (class II ODS) in Very Low Temp Refrigeration
R-410A |
AZ-20 |
22 and
HCFC blends |
N |
R-404A |
HP62 |
22 and
HCFC blends |
R, N |
R-407C |
Suva
9000, KLEA 66 |
22 and
HCFC blends |
R, N |
Isceon
59, NU-22, R-417A |
Isceon
59, NU-22 |
22 and
HCFC blends |
R, N |
Hydrofluoroether-7000 |
HFE-7000 |
123 |
R, N |
KDD5 |
KDD5 |
22 |
R, N |
RS-45 (ASHRAE proposed designation: R-434A) |
RS-45 |
22 |
R, N |
HFC-245fa |
Genetron® 245fa |
141b |
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 |
|