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
Non-Mechanical Heat Transfer Systems
Carbon
Dioxide |
|
all
CFCs |
R, N |
Water |
|
all
CFCs |
R, N |
Mineral
Oil |
|
all
CFCs |
R, N |
Volatile
Methyl Siloxanes |
|
all
CFCs |
R, N |
Galden
Fluids |
|
all
CFCs |
R |
HFC-236fa |
|
114 |
R, N |
HFE-7100 |
|
11, 12,
113, 114, 115 |
R, N |
HFC-4310mee |
|
all
CFCs |
R, N |
HFE-7200 |
|
11, 12,
113, 114, 115 |
R, N |
Hydrofluoroether 7000 |
HFE-7000 |
11,
113 |
R, N |
R-407C |
Suva
407C, Klea 407C |
502 |
R, N |
R-422C |
ICOR XLT1 |
502 |
R, N |
HCF-245fa |
Genetron® 245fa |
11, 113 |
R, N |
KDD6 |
KDD6 |
12 |
R, N |
Key: R = Retrofit Uses, N = New
Uses
Acceptable Substitutes for HCFCs (class II ODS)
in Non-Mechanical Heat Transfer Systems
HFE-7100 |
|
22 |
R, N |
HFC-4310mee |
|
all
HCFCs |
R, N |
ISCEON
59, NU-22, R-417A |
Isceon
59, NU-22 |
22 |
R, N |
HFE-7200 |
|
22 |
R, N |
R-422D |
ISCEON
MO29 |
22 |
R, N |
KDD5 |
KDD5 |
22 |
R, N |
HCF-245fa |
Genetron® 245fa |
21, 141b |
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
Substitutes for CFCs in Non-Mechanical Heat
Transfer Systems
Acceptable Subject
to Narrowed Use Limits
PFCs (C
3F
8, C
4F
10, C
5F
12, C
5F
11NO, C
6F
14, C
6F
13NO, C
7F
16, C
7F
15NO, C
8F
18, C
8F
17NO, C
9F
21N) |
all
CFCs |
PFCs are
only allowed in new systems where a study has
demonstrated that no other alternatives are
technically feasible due to safety or performance
requirements; this study must be kept available for
review. |
R, N |
Key: R = Retrofit Uses, N = New
Uses |