SNAP Regulations
The U.S. Environmental Protection Agency's (EPA) Significant New Alternatives Policy (SNAP) program implements section 612 of the amended Clean Air Act of 1990, which requires EPA to evaluate substitutes for the ozone-depleting substances to reduce overall risk to human health and the environment. Through these evaluations, SNAP generates lists of acceptable and unacceptable substitutes for each of the major industrial use sectors. The intended effect of the SNAP program is to promote a safe, smooth transition away from ozone depleting compounds to the available substitutes.
A chronological listing of all SNAP rules and notices is also available.
You will need Adobe Acrobat Reader, available as a free download, to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.
Rules
The following rules list substitutes that have been determined unacceptable, acceptable to use conditions, and acceptable subject to narrow use.
Substitutes that are acceptable without restriction are listed below in Notices of Acceptability
Rule 15- Fire suppression andexplosion protection listing under SNAP
Effective Date: November 27, 2006
- Direct Final/Concurrent Proposal (September 21, 2006; 71 FR 56539 / 71 FR 56422)
- Direct Final Rule: HTML Version and Print Version (11 pp, 195 KB)
- Concurrent Proposal: HTML Version and Print Version (4 pp, 99 KB)
- Fact Sheet
Rule 14- Alternatives for themotor vehicle air conditioning sector
Effective Date: August 12, 2008
- Final Rule (June 12, 2008; 73 FR 33304)
- HTML Version and Print Version (8 pp, 137 KB)
- Fact Sheet
- Notice of Proposed Rule (September 14, 2006; 71 FR 55140)
- HTML Version and Print Version (10 pp, 194 KB)
- Fact Sheet
This rule lists HFC-152a as an acceptable alternative with use conditionsfor motor vehicle air conditioning systems.
- Rule 13- The use of HCFC-22 and HCFC-142b in foams / listing of ozone depleting substitutes in foam blowing
Effective Date: May 29, 2007
- Final Rule (March 28, 2007; 72 FR 14432)
- HTML Version and Print Version (12 pp, 198 KB)
- Fact Sheet
- Notice of Proposed Rule (November 4, 2005; 70 FR 67120)
- HTML Version
- Fact Sheet
Rule 12- n-propyl bromide(nPB) in solvents cleaning, aerosols, and adhesives as a substitute for CFC-113, methyl chloroform, and HCFC-141b
Questions and answers about the May 2007 proposed and final rules
- Notice of Proposed Rulemaking for Adhesives, Coatings, and Aerosols (May 30, 2007; 72 FR 30168)
Print Version (40 pp, 1.52 MB) - Fact Sheet
- Final Rule for Solvent Cleaning (May 30, 2007; 72 FR 30142)
- Print Version (27 pp, 451 kb)
- Fact Sheet
The May 2007 final rule for nPB in solvent cleaning finds nPB an acceptable substitute for ozone depleting substances in metals, electronics, and precision cleaning.
- Corrections to Proposed Rule (October 2, 2003; 68 FR 56809)
- Proposed Rule (June 3, 2003; 68 FR 33284)
- Corrections to the Advance Notice of Proposed Rulemaking (March 25, 1999; 64 FR 14417)
- Advance Notice of Proposed Rulemaking (February 18, 1999; 64 FR 8043)
The June 3, 2003, rule proposed to list n-propyl bromide (nPB) as anacceptable substitute for ozone depleting substances (ODSs), subject to use conditions, in the solvent cleaning sector as well as aerosol solvents and adhesive uses. EPA initially proposed that the use of nPB is acceptable subject to a use condition, limiting contaminants of nPB formulations from isopropyl bromide.
Rule 11- Fire suppression substitutes
Effective Date: March 28, 2003
- Correction to Final Rule, Typographical Errors (April 7, 2003; 68 FR 16749)
- Correction to Final Rule, Additional Information (April 7, 2003; 68 FR 16729)
- Final Rule (January 27, 2003; 68 FR 4004)
EPA is issuing its decision on the acceptability of three halon substitutes in the fire suppression and explosion protection sector. HFC227BC found acceptable subject to use conditions in total flooding. C6-perfluoroketone and H Golden HFPEs found acceptable subject to narrowed use limits for the streaming end-use.
Rule 10- Acceptable and unacceptable substitutes for ozone-depleting substances (ODSs) in foams blowing
Effective Date: September 30, 2004
- Final Rule (September 30, 2004; 69 FR 58269)
- Notice of Data Availability (March 10, 2004; 69 FR 11358)
This action finds HCFC-141b unacceptable for use as a substitute for ODSs in all end uses in the foam blowing sector, except for specified exemptions,including use in space vehicles, nuclear energy, defense, and research and development for foreign customers.
Effective Date: August 21, 2002
- Final Rule (July 22, 2002; 67 FR 47703)
- Notice of Data Availability (May 23, 2001; 66 FR 28408)
- Proposed Rule (July 11, 2000; 65 FR 42653)
This action lists acceptable and unacceptable substitutes for ozone-depleting substances (ODSs) in the foam-blowing sector. The final rule withdraws the proposed decision to list HCFC-22 and HCFC-142b as unacceptable substitutes for existing users; lists HCFC-22 and HCFC-142b as unacceptable substitutes for HCFC-141b in rigid polyurethane/ polyisocyanurate laminated boardstock, rigid polyurethane appliance foam, and rigid polyurethane spray foam applications; lists HCFC-22 and HCFC-142b as acceptable substitutes for HCFC-141b, with narrowed use limits (users must ascertain and document that other acceptable alternatives are not technically feasible) in commercial refrigeration and sandwich panel applications and in the rigid polyurethane slabstock and other foams end-use; and lists HCFC-124 as an unacceptable substitute in all foam end-uses. At this time, EPA is deferring final action on its proposed decision to list HCFC-141b as an unacceptable foam-blowing agent.
Rule 9- Removal of restrictions on certain fire suppression substitutes for ozone-depleting substances (ODSs), and a list of substitutes
Effective Date: April 1, 2002
- Final Rule (January 29, 2002; 67 FR 4185)
EPA is rescinding use conditions that limit human exposure to halocarbon and inert gas agents used in the fire suppression and explosion protection industry. These use conditions are redundant with safety standards established by the National Fire Protection Association (NFPA). In addition, EPA is taking direct final action to change the listing for HBFC-22B1 from acceptable subject to use conditions to unacceptable.
Rule 8- Prohibition for the use of refrigerant blends containing hexafluoropropylene
Effective Date: January 26, 1999
- Interim Final Rule Prohibiting the Use of Refrigerant Blends Containing Hexafluoropropylene (January 26, 1999; 64 FR 3865)
Hexafluoropropylene (HFP) and any blend containing HFP are listed asunacceptable for substitutes for CFC-12 and HCFC-22.
Rule 7- MT-31 as an unacceptable refrigerant under EPA's Significant New Alternatives Policy (SNAP) Program
Effective Date: January 26, 1999
- Interim Final Rule Prohibiting the use of MT-31 (January 26, 1999; 64 FR 3861)
The refrigerant blend MT-31 is listed as unacceptable for all refrigeration and air-conditioning end-uses.
Rule 6- Listing of two substitutes for ozone-depleting substances (ODSs) in the fire suppression and explosion protection sector
Effective Date: May 26, 2000
- Final Rule (April 26, 2000; 65 FR 24387)
- Corrections to Proposed Rule (March 25, 1999; 64 FR 14417)
- Proposed Rule (February 18, 1999; 64 FR 8038)
This action lists two substitutes for halon B1301 and halon 1211, IG-100,and HCFC Blend E in the fire suppression and explosion protection sector asacceptable, subject to use restrictions. Substitute IG-100 is for the end-use of total flooding systems and HCFC Blend E is for the end-use of streaming agents.
Rule 5- Two gases found unacceptable as substitutes for refrigerants in "self-chilling cans"
Effective Date: April 2, 1999
- Final Rule (March 3, 1999; 64 FR 10373)
- Proposed Rule (February 3, 1998; 63 FR 5491)
The action of this rule, lists unacceptable the use of HFC-134a and HFC-152a as refrigerants in "self-chilling cans."
Rule 4- Listing of motor vehicle air-conditioning systems substitutes and a range of certain other substitutes
Effective Date: May 28, 1999
- Final Rule (April 28, 1999; 64 FR 22981)
- Proposed Rule (May 21, 1997; 62 FR 27873)
This action clarifies the criteria for unique fittings used in motor vehicle air-conditioning systems, and addresses the acceptability of HFC-4310mee and HCFC-225ca/cb. The end-uses for these substitutes are inmetal cleaning and solvent in aerosols. C3F8, HFC-236fa, and C4F10 are found acceptable with use conditions for halon 1301 in-fire suppression and explosion prevention. The unacceptability of substitutes in the refrigerationand air conditioning, solvents, aerosols, fire suppression, and adhesives, coatings, & inks sectors are also listed.
Rule 3- Cross-media evaluation of risks to human health and environment by sector end-use
Effective Date: November 15, 1996
- Final Rule (October 16, 1996; 61 FR 54029)
- Proposed Rule (May 22, 1996; 61 FR 25604)
EPA issued its decisions on the acceptability HFC-4310mee, HCFC-141b, perfluoropolyethers, and perfluorocarbons. The end-uses of these substitutes are electronic and precision cleaning as well as aerosol solvents.
Rule 2- Cross-media evaluation of risks to human health and environment by sector
Effective Date: June 21, 1996
- Final Rule (May 22, 1996; 61 FR 25585)
- Proposed Rule (October 2, 1995; 60 FR 51383)
EPA is issuing its preliminary decisions on the acceptability ofsubstitutes not previously reviewed by the Agency. Monochlorotoluenes/benzotrifluorides are acceptable subject to use conditions as substitutes for CFC-113 and MCF in electronics, precision, and metals cleaning. Blend Zeta and HCFC Blend Delta are acceptable as substitutes for CFC-12 in retrofitted and new motor vehicle air conditioners, subject to the use conditions applicable to motor vehicle air conditioning.
Rule 1- Comment response document of public options concerning EPA rulemaking
Effective Date: July 13, 1995
- Final Rule (June 13, 1995; 60 FR 31092)
- Proposed Rule (September 26, 1994; 59 FR 49108)
EPA issued decisions on refrigerants and solvent cleaning sectors found acceptable subject to use conditions. The refrigeration sector deals with end-uses both retrofit and new equipment. HCFC Blend Beta was found as acceptable subject to use conditions for motor vehicle air conditioning. Blend B was found acceptable subject to use conditions for; centrifugalchillers, chillers, industrial process refrigeration, skating rinks, storage warehouses, refrigerated transport, food refrigeration, ice machines, freezers, dehumidifiers, and air conditioners. HCFC-225 ca/cb is decided as a substitute for CFC-113 and MCF acceptable to use conditions in precision and metals cleaning. Various other substitutes were found unacceptable for refrigerants and air conditioning as well as in the solvents cleaning sector.
SNAP Notices of Acceptability
These notices expand the list of acceptable or pending substitutes for ozone depleting substances (ODSs) under the U.S. Environmental Protection Agency's (EPA) Significant New Alternatives Policy (SNAP) program. The substitutes listed below are acceptable without restriction in the specific end-uses unless designated as pending. A pending substitute can be sold after the 90 day review period has expired, but its acceptability may be affected by a subsequent rulemaking. To see substitutes that are restricted or prohibited, see the list of rules above.
Notice 23:
Effective Date: January 2, 2009
- Notice 23 (January 2, 2009; 74 FR 21)
This notice expands the list of acceptable substitutes for end uses in refrigeration and air conditioning, fire suppression, and foam blowing. The determinations concern new substitutes.
Notice 22:
Effective Date: October 4, 2008
- Notice 22 (October 4, 2007; 72 FR 56628)
This notice expands the list of acceptable substitutes for end uses in refrigeration and air conditioning. The determinations concern new substitutes.
Notice 21:
Effective Date: September 28, 2006
- Notice 21 (September 28, 2006; 71 FR 56884)
This notice expands the list of acceptable substitutes for end uses in refrigeration and air conditioning, foam blowing, cleaning solvents, aerosols, and sterilants. The determinations concern new substitutes.
Notice 20:
Effective Date: March 29, 2006
- Notice 20 (March 29, 2006; 71 FR 15589)
This notice expands the list of acceptable substitutes for end uses in refrigeration and air conditioning, foam blowing, and fire suppression and explosion protection. The determinations concern new substitutes.
Notice 19:
Effective Date: October 1, 2004
- Notice 19 (October 1, 2004; 69 FR 58903)
EPA has found acceptable additional substitutes for use in the following sectors: refrigeration and air conditioning, foam blowing, fire suppression and explosion protection, and sterilants. This document also clarifies thestatus of the use of a hydrochlorofluorocarbon as an aerosol solvent, revises the global warming potential for a substitute previously listed as acceptable for use in fire suppression and explosion protection based on new information, and clarifies a statement from the previous SNAP notice of acceptability of August 21, 2003, regarding a refrigerant.
Notice 18:
Effective Date: August 21, 2003
- Notice 18 (August 21, 2003; 68 FR 50533)
The EPA has approved acceptable substitutes for use in the following sectors: refrigeration and air conditioning, solvents cleaning, foam blowing, fire suppression and explosion protection, and aerosols.
- Refrigeration and air-conditioning sector EPA has found acceptable RS-44 as a substitute for HCFC-22 and R-407C as a substitute for R-502 in the following end-uses (new and retro-fit); industrial process refrigeration, industrial process air conditioning, ice skating rinks, cold storage warehouses, refrigerated transport, retail food refrigeration, vending machines, water coolers, commercial ice machines, household refrigerators and freezers, centrifugal chillers, reciprocating chillers, screw chillers, non-mechanical heat transfer systems, household and light commercial air conditioning, as well as residential dehumidifiers. Also, EPA decided ISCEON 89 as an acceptable substitute for R-13B1 in very low temperature refrigeration.
- EPA has decided acceptable for the solvent cleaning sector HFE-7000 as a substitute for CFC-113, methyl chloroform, and HCFC-141b in the end-uses of precision cleaning and electronics cleaning.
- The foam blowing sector EPA decided acceptable Ecomate as a substitute for CFC and HCFCs, HCF-245fa as a substitute for HCFCs and blends of HFC-245fa and HCFC-22 as a substitute for blends of HCFC-141b and HCFC-22 in the following end-uses; rigid polyurethane and polyisocyanurate laminated boardstock, rigid polyurethane appliance foam, rigid polyurethane slabstock and other foams, rigid polyurethane commercial refrigeration and sandwich panels, polyurethane integral skin foam, phenolic insulation board and bunstock, and polyolefin.
- EPA has decided for the fire suppression and explosion protection sectors NAF S-125 as an acceptable substitute for halon 1301 in the end-use of total flooding.
- In the aerosol sector, HFE-7000 is an acceptable substitute for CFC-113, methyl chloroform, HCFC-141b in the end-use of aerosol solvents.
Notice 17:
Effective Date: December 20, 2002
- Correction to Notice 17 (April 7, 2003; 68 FR 16728)
- Notice 17 (December 20, 2002; 67 FR 77927)
The EPA has approved acceptable substitutes for use in the following sectors: refrigeration and air conditioning, solvents cleaning, fire suppression and explosion protection, and aerosols.
- EPA's decision for acceptable substitutes in refrigeration and air conditioning are RS-24 as a substitute for CFC-12, NU-22 as a substitute for R-502, and R-404A, R-507A, R-407C as substitutes for HCFC-22 and HCFC blends. The end-uses for these substitutes are; industrial process refrigeration, industrial process air conditioning (only new), ice skating rinks, cold storage warehouses, refrigerated transport, retail food refrigeration, vending machines, water coolers, commercial ice machines, household refrigerators and freezers, reciprocating chillers, centrifugal chillers, screw chillers, very low temperature refrigeration, non-mechanical heat transfer systems, household and light commercial air conditioning, residential dehumidifiers.
- EPA's decision for the solvent cleaning sector of HCFC-225ca and HCFC-225cb as acceptable substitutes for CFC-113 and methyl chloroform for metal cleaning.
- EPA's decision for the fire suppression and explosion protection sector of C6-perfluoroketone as an acceptable substitute for halon 1301.
- EPA's decision for the aerosol sector of HCFC-225ca and HCFC-225cb as acceptable substitutes for HCFC-141b in the end-use of aerosol solvents.
Notice 16:
Effective Date: March 22, 2002
- Notice 16 (March 22, 2002; 76 FR 13272)
The ozone depleting substitutes are for use in the following sectors: refrigeration and air conditioning; aerosols; and adhesives, coatings, and inks. In addition, we are notifying the public of new information available on the toxicity of HCFC-225ca and HCFC-225cb, acceptable substitutes used in solvents cleaning.
Notice 15:
Effective Date: May 23, 2001
- Notice 15 (May 23, 2001; 66 FR 28179)
EPA's decision for acceptable substitute uses in the refrigeration and air conditioning sector.
- HFC-134a/HBr (98/8) as a substitute for CFC-12 and R-502, with the end uses of retail food refrigeration and cold storage warehouses for primary heat transfer fluid in new secondary-loop equipment for not-in-kind replacements of systems and the end-use of refrigerated transport.
- HFC-134a/HBr (92/8) as an acceptable substitutes for CFC-11, CFC-12, CFC-114, CFC-115, and R-507 in the end-use of industrial process refrigeration.
- 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 as acceptable substitutes for CFC- 13, CFC-113, CFC-114, and blends thereof for the end-use of very low temperature refrigeration (new and retrofit).
Notice 14:
Effective Date: December 18, 2000
- Correction to Notice 14 (March 7, 2001; 66 FR 13655)
- Notice 14 (December 18, 2000; 65 FR 78977)
This notice identifies EPA's decisions of acceptable substitutes for refrigeration, air conditioning, foams, non-aerosol solvent cleaning, and aerosol solvents. This action also requests information on the composition and safety of certain refrigerants for motor vehicle air conditioners. This notice also requests information on whether the SNAP program should include review of and establishment of use conditions for operations that involve manual cleaning with solvents or restriction of non-aerosol solvent substitutes to equipment that meets the cleaning equipment standards in the National Emission Standards for Halogenated Solvent Cleaning. Finally, this action updates readers on the SNAP program's review of n-propyl bromide for use as a substitute for ozone-depleting solvents used in the non-aerosol solvents cleaning, aerosol solvents and propellants, and adhesives, coatings and inks sectors.
- Hydrofluoroether 7100 and Hydrofluoroether 7200 for CFC-11, CFC-12, CFC-114, CFC-115, HCFC-22, R-502, R-503, and R-13B1 in the refrigeration and air-conditioning end-uses of industrial process refrigeration, retail food refrigeration, and very low temperature refrigeration, as a secondary heat transfer fluid in new equipment for not-in-kind replacements of systems. Also, non-mechanical heat transfer for use in retrofit and new equipment.
- FOR12A and FOR12B for an acceptable substitute of HCFC-22 and CFC-12, NU-22 for an acceptable substitute of HCFC-22, and SP34E for an acceptable substitute of CFC-12 for the refrigeration and air-conditioning end-uses; industrial process refrigeration and air-conditioning, industrial process refrigeration, cold storage warehouses, refrigerated transport, retail food refrigeration, ice machines, vending machines, water coolers, centrifugal chillers, reciprocating chillers, household refrigerators and freezers, residential air conditioning and heat pumps, residential dehumidifiers, motor vehicle air conditioning and buses only.
- Methyl formate as an acceptable substitute for CFCs and HCFCs in the following foam sector end-uses; rigid polyurethane and polyisocyanurate laminated boardstock, rigid polyurethane appliances, rigid polyurethane slabstock and other foams, rigid polyurethane commercial refrigeration and sandwich panels, and polyurethane integral skin foam.
- Hydrofluoroether 7100 as an acceptable substitute for HCFC-141b and HCFC-22; Heptafluorocyclopentane as acceptable substitutes for CFC-113, methyl chloroform, and HCFC-141b; and HFC-365mfc as an acceptable substitute for CFC-113, methyl chloroform, and HCFC-141b in the non-aerosol solvent cleaning end-uses of all metals cleaning, precision cleaning, and electronics cleaning applications.
Notice 13:
Effective Date: June 19, 2000
- Notice 13 (June 19, 2000; 65 FR 37900)
There are listing of substitutes for refrigeration and air conditioning as well as foam blowing.
- The refrigeration and air conditioning acceptable substitutes are HFC-4310mee for CFCs and HCFCs, Ikon A and Ikon B for CFC-12, and HFC-245fa for CFC-11 (new only). These substitutes are for the following end uses: non-mechanical heat transfer, household refrigeration and freezers, commercial comfort air conditioning, cold storage warehouses, industrial process refrigerators and air conditioners, refrigerated transport, retail food refrigeration, vending machines, water coolers, commercial ice machines, and small auxiliary power units.
- Vacuum panels are acceptable as substitutes for HCFC blown rigid polyurethane appliance foam, and 2-chloropropane is acceptable for HCFCs in rigid polyurethane and polyisocyanurate laminated boardstock foam.
Notice 12:
Effective Date: April 11, 2000
- Notice 12 (April 11, 2000; 65 FR 19327)
This notice deals with acceptable substitutes for refrigeration, airconditioning, and foam blowing. The end uses for refrigeration and air-conditioning are uranium isotope separation processing (retrofit), using furan as an acceptable substitute for CFC-114. All foam-blowing end uses are included, for saturated light hydrocarbons C3-C6 for HCFC-141b, except HCFC-141b replacement in spray foam applications.
Notice 11:
Effective Date: December 6, 1999
- Notice 11 (December 6, 1999; 64 FR 68039)
This notice applies to substitutes for refrigeration, air conditioning, foam blowing, solvents cleaning sector, and aerosols.
- HFC-245fa is acceptable as a substitute for CFC-11 and HCFC-141b in all foam end-uses.
- Exxsol Blowing Agents are acceptable substitutes for HCFC-141b in all foam end-uses.
- Hydrofluoroether (HFE-7200) is an acceptable substitute for CFC-113 and methyl chloroform (MCF) in all solvents cleaning end-uses and solvents in aerosol products.
- THR-02 is acceptable as a substitute for CFC-12 in the following end-uses: Industrial process refrigeration and air-conditioning, cold storage warehouses, refrigerated transport, retail food refrigeration, ice machines, vending machines, water coolers, centrifugal chillers, reciprocating chillers, household refrigerators and freezers.
- THR-03 is acceptable as a substitute for HCFC- 22 in the following end-uses: Industrial process refrigeration and air-conditioning, cold storage warehouses, refrigerated transport, retail food refrigeration, ice machines, centrifugal chillers, reciprocating chillers, ice skating rinks, household refrigerators and freezers, and residential window unit air-conditioning.
- ISCEON 59 is acceptable as a substitute for R- 22 in the following end-uses: Household and light commercial air-conditioning, commercial comfort air-conditioning, industrial process refrigeration and air-conditioning, cold storage warehouses, refrigerated transport, retail food refrigeration, ice machines, vending machines, water coolers, centrifugal chillers, reciprocating chillers, household and other refrigerated appliances, ice skating rinks, and non-mechanical heat transfer.
- HFC-152a is acceptable as a substitute for CFC-12 in the following end-uses: Industrial process refrigeration and air-conditioning, cold storage warehouses, refrigerated transport, retail food refrigeration, ice machines, vending machines, water coolers, centrifugal chillers, reciprocating chillers, and residential dehumidifiers.
- The cryo-mechanical cryogenic transport system that uses recaptured and recycled liquid carbon dioxide or liquid nitrogen is acceptable as a substitute for R-502 or CFC-12 in the transport refrigeration end-use.
- Hydrofluroether (HFE-7200) is an acceptable substitute for CFC-113 in non-mechanical heat transfer.
Notice 10:
Effective Date: June 8, 1999
- Notice 10 (June 8, 1999; 64 FR 30410)
This notice includes substitutes for; adhesives, coatings, and ink sector, aerosols sector, solvents sector, foams sector, and refrigeration and air conditioning sector. Refrigeration and air conditioning end uses include all R-502 end uses in addition to non-mechanical heat transfer, very low temperature refrigeration, and motor vehicle air conditioners. All end usesare applicable for solvent cleaning, aerosol solvents, adhesives, coatings, and ink sector.
- THR-04 is acceptable as a substitute for R-502 in all refrigeration and air conditioning end-uses.
- HFC-236fa, when manufactured using any process that does not convert perfluoroisobutylene (PFIB) directly to HFC-236fa in a single step, is acceptable as a substitute for CFC-114 in non-mechanical heat transfer.
- HFE-7100, Hydrofluoroether, is an acceptable substitute for CFC-113 in non-mechanical heat transfer.
- HFC-23 is acceptable as a substitute for CFC-12 in very low-temperature refrigeration.
- HFC-134a and HFC-152a are acceptable substitutes for HCFCs in all foam blowing end-uses.
- Carbon dioxide and water are acceptable substitute for HCFCs in all foam blowing end-uses.
- HFC-4310mee is acceptable as a substitute for HCFC-141b in all solvents cleaning and aerosol solvent end-uses.
- Benzotrifluoride is an acceptable substitute with an exposure limit (AEL) of 100 ppm for all solvent cleaning, aerosols solvents, adhesives, coatings, and inks end-uses.
Notice 9:
Effective Date: May 22, 1998
- Notice 9 (May 22, 1998; 63 FR 28251)
This is a summary of acceptable decisions of substitutes for aerosol propellants. CFC-11, CFC-12, CFC-114, HCFC-22, and HCFC-142b are being replaced by HFC-227ea.
Notice 8:- Notice 8 (February 24, 1998; 63 FR 9151)
This notice contains substitutes for end uses in solvent cleaning, aerosols, foam blowing, and refrigeration and air conditioning. The end uses for foam blowing are CFCs, HCFCs, and polyurethane integral skin, with acceptable substitutions of formic acid and acetone. The end uses for aerosol solvents are CFC-11, CFC-113, MCF, and HCFC-141b, with an acceptable substitution of C5-C20 petroleum hydrocarbons. The solvent end uses include metal cleaning, electronic cleaning and precision cleaning with CFC-113. There are many refrigeration and air conditioning end-uses.
Notice 7:
Effective Date: June 3, 1997
- Notice 7 (June 3, 1997; 62 FR 30275)
This notice lists GHG-X5, MT-31, HCFC-22, HCFC-142b, and GHG-X5 as substitutes for foam blowing, refrigeration, and air conditioning. The foam blowing end uses are HCFCs, polyurethane integral skin with an acceptable substitute of sub-saturated light hydrocarbons C3-C6. CFC-12 centrifugal and reciprocating chillers, industrial process refrigeration, cold storage warehouses, refrigerated transport, retail food refrigeration, vending machines, water coolers, commercial ice machines, household refrigerators, household freezers, and residential dehumidifiers (retrofitted and new). Also, CFC-12 motor vehicle air conditioning, automotive and non-automotive (retrofitted and new).
Notice 6:
Effective Date: March 10, 1997
- Notice 6 (March 10, 1997; 62 FR 10700)
This notice contains substitutes for refrigeration and the foam sector. Substitutes include HFC-236fa and saturated light hydrocarbons C3-C6. The refrigeration sector end-use is CFC-114 industrial process refrigeration,with an acceptable substitute of HFC-236fa. The foam sector acceptable decisions are for the end-uses of HCFCs rigid polyurethane and polyisocyanurate laminated boardstock, HCFCs rigid polyurethane appliance, and saturated light hydrocarbons C3-C6. There are various acceptable substitutes for these end uses in the foam sector.
Notice 5:
Effective Date: September 5, 1996
- Notice 5 (September 5, 1996; 61 FR 47012)
This notice expands the list of acceptable and pending substitutes andclarifies information on refrigerant blends R-410A, R-410B, and R-407C that EPA previously added to the acceptable substitute list. This notice lists acceptable substitutes in various and uses in refrigeration and air conditioning, foam blowing, fire suppression, explosion protection, solventcleaning, aerosols, adhesives, coatings, and inks. There are also pending substitutes, n-propyl bromide and HFC-4310, listed in aerosols and solvent cleaning.
- Hot Shot, GHG-X4, Freezone, Freeze 12, G2018C, NARM-502, and R-401C are acceptable substitutes for the refrigeration and air conditioning sectors.
- R-507, ammonia, evaporative and desiccant cooling, and water/lithium bromide are acceptable substitutes for HCFC-22 in refrigeration and air conditioning end-uses.
- Proprietary Blowing Agent 1 (PBA 1) is an acceptable substitute for CFCs in HCFCs for rigid polyurethane and polyisocyanurate laminated boardstock foam; rigid polyurethane appliance; rigid polyurethane slabstock and other; and rigid polyurethane spray and commercial refrigeration, and sandwich panels.
- Foam A is acceptable as a Halon 1301 substitute for fire suppression and explosion protection.
- Hydrofluoroether (HFE-7100) is an acceptable substitute for CFC-113 and methyl chloroform (MCF) in solvents cleaning, and aerosol solvents.
- Trans-1, 2-dichloroethylene is acceptable as an alternative to MCF and CFC-113 in adhesives.
Notice 4:
Effective Date: February 8, 1996
- Notice 4 (February 8, 1996; 61 FR 4736)
This notice lists acceptable substitutes for the end-uses of refrigerants,fire suppression and explosion protection, foam blowing, and solvent cleaning.
- HCFC Blend Beta was listed as containing HFC-134a, HCFC-124, and isobutane. In fact, according to the submission on file with EPA, this blend contains butane. The determination that this blend is acceptable subject to certain use conditions applied to the actual blend, not to the incorrectly listed one.
- R-508, which contains HFC-23 and R-116, is acceptable as a substitute for CFC-13, R-13B1, and R-503 in retrofitted and new very low temperature refrigeration.
- HCFC Blend Delta is acceptable as a substitute for CFC-12 in retrofitted household refrigerators and freezers.
- HCFC Blend Lambda is acceptable as a substitute for R-500 in retrofitted centrifugal chillers and as a substitute for CFC-12 in the following new and retrofitted end-uses.
- R-410A, R-410B, and R-407C are acceptable substitutes for HCFC-22. The following are the new end-uses for the substitutes: centrifugal, reciprocating, and screw chillers, industrial process refrigeration systems, very-low-temperature industrial process refrigeration, industrial process air conditioning, ice skating rinks, refrigerated transport, retail food refrigeration, cold storage warehouses, vending machines, water coolers, commercial ice machines, household refrigerators and freezers, residential dehumidifiers, household and light commercial air conditioning.
- HFC-134a is acceptable as a substitute for HCFC-22 in new Household and Light Commercial Air Conditioning.
Notice 3:
Effective Date: July 28, 1995
- Notice 3 (July 28, 1995; 60 FR 38729)
This notice lists acceptable substitutes for end-uses in refrigeration and air conditioning sector, as well as fire suppression and explosion protection sector.
- Octamethylcyclotetrasiloxanes and decamethylcyclopentasiloxanes are acceptable as substitutes for CFC-11, CFC-12, CFC-113, CFC-114, and CFC-115 in new and retrofitted heat transfer systems in the refrigeration and air conditioning sector.
- Water is acceptable as a substitute for CFC-11, CFC-12, CFC-113, CFC-114, and CFC-115 in new and retrofitted heat transfer systems.
- Mineral oil is acceptable as a substitute for CFC- 11, CFC-12, CFC-113, CFC-114, and CFC-115 in new and retrofitted heat transfer systems.
- R-508, which contains HFC-23 and R-116, is acceptable as a substitute for CFC-13, R-13B1, and R-503 in retrofitted and new industrial process refrigeration.
- Ammonia absorption is acceptable as an alternative technology to household refrigerators and freezers using CFC-12 as a refrigerant.
- Water Mist systems using potable water or natural seawater are acceptable as Halon 1301 and Halon 1211 substitutes.
Notice 2:
Effective Date: January 13, 1995
- Notice 2 (January 13, 1995; 60 FR 3318)
This notice states acceptable substitutes for the refrigeration and air conditioning sector, as well as the foam blowing sector.
- R-401A and R-401B, which consist of HCFC-22, HFC-152a, and HCFC- 124, are acceptable as substitutes for CFC-11, CFC-12, R-500, and R-502 in various refrigeration and air conditioning end-uses.
- CO2 is acceptable as a substitute for CFC-13, R-13B1, and R-503 in various refrigeration and air conditioning end-uses.
- HCFC-22 and HFC-134a are acceptable as substitutes for R-400 (60/40) and CFC-114 in New Industrial Process Air Conditioning.
- R-401A and R-401B are acceptable as a substitutes for R-400(60/40) and CFC-114 in Retrofitted Industrial Process Air Conditioning.
- R-404A, which consists of HFC-125, HFC-143a, and HFC-134a, is acceptable as a substitute for CFC-12 in new household refrigerators.
- R-507, which consists of HFC-125 and HFC-143a, is acceptable as a substitute for CFC-12 in new household refrigerators.
- Hydrocarbon Blend B is acceptable as a substitute for CFC-12 in retrofitted and new industrial process refrigeration systems.
Notice 1:
Effective Date: August 26, 1994
- Notice 1 (August 26, 1994; 59 FR 44240)
This notice lists acceptable substitutes for the refrigeration and air conditioning sector, foam blowing sector, solvent cleaning sector, fire suppression and explosion protection sector, and the aerosol sector.
- R-406A is acceptable as a substitute for R-500 in retrofitted centrifugal chillers.
- HCFC-123, R-406, R-407A, R-407B, and HCFC Blend Epsilon are acceptable substitutes for CFC-11, CFC-12, and R-502 for end-uses in the refrigeration and air conditioning sectors.
- HFC-23, R-403, and PFC Blend Alpha are acceptable substitute for CFC-13, R-13B1, and R-503 in the refrigeration and air conditioning sectors.
- HCFC Blend Gamma is acceptable as a substitute for CFC-12 and R-502 in various end-uses in refrigeration and air conditioning.
- R-402A and R-402B are acceptable as substitutes for CFC-11, CFC-12, and R-502 in retrofitted household freezers.
- R-507 is acceptable as a substitute for CFC-12 and R-502 in various end-uses in refrigeration and air conditioning.
- The Electroset Manufacturing Technology is an acceptable substitute for CFC-11 blown rigid polyurethane and polyisocyanurate laminated boardstock foams.
- HFC-143a is acceptable as an alternative to CFC-12 in polystyrene boardstock and billet foams.
- Saturated Light Hydrocarbons C3-C6 Saturated light hydrocarbons C3-C6 (and blends thereof) are acceptable as substitutes for CFC-11 and methyl chloroform in polyurethane flexible foam.
- Methylene chloride is acceptable as a substitute for CFC-11, CFC-12, and CFC-114 in polyolefin foams.
- Polyolefin Chemical Blend A is an acceptable substitute for CFC-11, CFC-12, and CFC-114 in polyolefin foams.
- HFC-152a/Saturated Light Hydrocarbons C3-C6 blends are acceptable substitutes for CFC-11, CFC-12, and CFC-114 in polyolefin foams.
- Trans-1, 2-dichloroethylene is acceptable as an alternative to MCF and CFC-113 in electronic, precision, and metals cleaning.
- Octamethylcyclotetrasiloxanes and decamethylcyclo pentasiloxanes are acceptable alternatives to MCF and CFC-113 in electronic, precision, and metals cleaning.
- HCFC-123 is an acceptable substitute for CFC-113 and MCF in precision cleaning.
- HCFC-124, HCFC Blend C, HCFC Blend D, and Gelled Halocarbon/Dry Chemical Suspension are acceptable as Halon 1211 substitutes.
- HCFC Blend A is acceptable as a medical sterilant substitute for 12/88 CFC-12/EtO.
Other SNAP Federal Register Publications
- Notice of Proposed Settlement with OZ Technology, Inc. (September 22, 1995; 60 FR 49275)
- Notice of Denial of Petition from OZ Technology, Inc. (September 25, 1995; 60 FR 49407)
- Notice of Denial of 2nd Petition from OZ Technology, Inc. (September 30, 1996; 61 FR 51018)
- This petition requested that EPA find HC-12a® acceptable and HFC-134a unacceptable. The Notice simply alerts the public to the petition and the response, and gives the location where people can find each document. The petition itself was not submitted to EPA electronically and is not available. However, the cover letter to EPA's response may be read online or the entire 30-page response may be downloaded in WordPerfect 5.1 format (120K). The formats below refer to the Notice, not the response itself.
Notice of Denial of 3rd Petition from OZ Technology, Inc. (January 21, 1999; 64 FR 3272)
- This petition requested that EPA find HC-12a® acceptable. The Notice simply alerts the public to the petition and the response, and gives the location where people can find each document. The petition itself was not submitted to EPA electronically and is not available. However, the cover letter to EPA's response may be read online and the entire response is available (18 pp, 57 K). The formats below refer to the Notice, not the response itself.
- Notice of Data Availability; New Information Concerning SNAP Program Proposal on HCFC Use in Foams (May 23, 2001; 66 FR 28408)
- Notice of Data Availability; Reports on CO2 Total Flooding Fire Extinguishing Systems (May 11, 2004; 69 FR 26059)