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  2. Significant New Alternatives Policy (SNAP)

Substitutes in Streaming Agents

Substitutes are reviewed on the basis of environmental and health risks, including factors such as ozone depletion potential, global warming potential, toxicity, flammability, and exposure potential. Lists of acceptableThis designation means that a substitute may be used, without restriction, to replace the relevant ODS within the end-use specified. For example, HCFC-22 is an acceptable substitute for R-502 in industrial process refrigeration. Note that all SNAP determinations apply to the use of a specific product as a substitute for a specific ODS in a specific end-use. and unacceptableThis designation means that it is illegal to use a product as a substitute for an ODS in a specific end-use. For example, HCFC-141b is an unacceptable substitute for CFC-11 in building chillers. Note that all SNAP determinations apply to the use of a specific product as a substitute for a specific ODS in a specific end-use. substitutes are updated several times each year. The list of substitutes is shown below.

Note: SNAP-related information published in the Federal Register takes precedence over all information on this page.

SubstituteTrade Name(s)
ODP A number that refers to the amount of ozone depletion caused by a substance. The ODP is the ratio of the impact on ozone of a chemical compared to the impact of a similar mass of CFC-11. Thus, the ODP of CFC-11 is defined to be 1.0. Other CFCs and HCFCs have ODPs that range from 0.01 to 1.0. The halons have ODPs ranging up to 10. Carbon tetrachloride has an ODP of 1.2, and methyl chloroform's ODP is 0.11. HFCs have zero ODP because they do not contain chlorine. A detailed list ozone-depleting substances with their ODPs, GWPs, and CAS numbers is available.
GWPThe index used to translate the level of emissions of various gases into a common measure in order to compare the relative radiative forcing of different gases without directly calculating the changes in atmospheric concentrations. GWPs are calculated as the ratio of the radiative forcing that would result from the emissions of one kilogram of a greenhouse gas to that from the emission of one kilogram of carbon dioxide over a period of time (usually 100 years). Gases involved in complex atmospheric chemical processes have not been assigned GWPs. See lifetime.SNAP Listing DateListing StatusFurther Information
[HCFC Blend] B Halotron 10.009877March 18, 1994Acceptable: For non-residential uses only. 
[HCFC Blend] C NAF P-IIIN/AN/AAugust 26, 1994Acceptable: For non-residential uses only. 
[HCFC Blend] D Blitz IIIN/AN/AAugust 26, 1994Acceptable: For non-residential uses only. 
[HCFC Blend] E NAF P-IV0.02N/AApril 26, 2000 (pdf) (233 KB)Acceptable with Narrowed Use Limits: For non-residential uses only.As with other streaming agents, EPA recommends that potential risks of combustion byproducts be labeled on the extinguisher (see UL 2129). Discharge testing and training should be strictly limited only to that which is essential to meet safety or performance requirements. The agent should be recovered from the fire protection system in conjunction with testing or servicing, and recycled for later use or destroyed.
[Surfactant Blend] A Cold Fire, FlameOut, Fire StrikeN/AN/AMarch 18, 1994Acceptable 
2-bromo-3,3,3-trifluoropropene 2-BTP0.00280.23-0.26December 1, 2016 (pdf) (969 KB); April 28, 2023 (pdf) (584 KB)Acceptable with Use Conditions: For use only in handheld extinguishers in aircraft and non-residential uses, except home offices and boats.Use of this agent should be in accordance with the latest edition of NFPA 10 Standard for Portable Fire Extinguishers.
C6-perfluoroketone [1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone] Novec™ 1230, Noah5112, Dukare1230, ClimalifeFK-5-1-120<1January 27, 2003 (pdf) (154 KB)Acceptable with Narrowed Use Limits: For non-residential uses only.For operations that fill canisters to be used in streaming applications, EPA recommends the following:

- install and use adequate ventilation ;
- clean up all spills immediately in accordance with good industrial hygiene practices; and
- provide training for safe handling procedures to all employees that would be likely to handle containers of the agent or extinguishing units filled with the agent.

Discharge testing and training should be strictly limited only to that which is essential to meet safety or performance requirements. The agent should be recovered from the fire protection system in conjunction with testing or servicing, and recycled for later use or destroyed. As with other streaming agents, EPA recommends that potential risks of combustion by-products be labeled on the extinguisher (see UL 2129). EPA has no intention of duplicating or displacing OSHA coverage related to the use of personal protective equipment (e.g., respiratory protection), fire protection, hazard communication, worker training or any other occupational safety and health standard with respect to halon substitutes. 
C6F14 PFC-614, CEA-61409,300April 28, 1999 (pdf) (236 KB)Acceptable with Narrowed Use Limits: For non-residential uses where other alternatives are not technically feasible due to performance or safety requirements: a. because of their physical or chemical properties, or b. where human exposure to the extinguishing agents may result in failure to meet applicable narrowed use limits.Users should observe the limitations on PFC acceptability by making reasonable effort to undertake the following measures:

- conduct an evaluation of foreseeable conditions of end use;
- determine that the physical or chemical properties or other technical constraints of the other available agents preclude their use; and
- determine that human exposure to the other alternative extinguishing agents may result in failure to meet applicable narrowed use limits; Documentation of such measures should be available for review upon request.

The principal environmental characteristic of concern for PFCs is that they have high GWPs and long atmospheric lifetimes. Actual contributions to global warming depend upon the quantities of PFCs emitted. For additional guidance regarding applications in which PFCs may be appropriate, users should consult the description of potential uses which is included in the March 18, 1994, Final Rule (59 FR 13044). Discharge testing and training should be strictly limited only to that which is essential to meet safety or performance requirements. The agent should be recovered from the fire protection system in conjunction with testing or servicing, and recycled for later use or destroyed.
C7 Fluoroketone 01September 19, 2012 (pdf) (297 KB)Acceptable with Narrowed Use Limits: For non-residential uses only.Use of this agent should be in accordance with the latest edition of NFPA Standard 10 for Portable Fire Extinguishers.

For operations that fill canisters to be used in streaming applications, EPA recommends the following:

–Adequate ventilation should be in place;
–All spills should be cleaned up immediately in accordance with good industrial hygiene practices; and
–Training for safe handling procedures should be provided to all employees that would be likely to handle containers of the agent or extinguishing units filled with the agent.

This substitute is a blend of 3-pentanone,1,1,1,2,4,5,5,5-octafluoro-2,4-bis(trifluoromethyl) (Chemical Abstracts Service Registry Number [CAS Reg. No.] 813-44-5) and 3-hexanone,1,1,1,2,4,4,5,5,6,6,6-undecafluoro-2-(trifluoromethyl) (CAS Reg. No. 813-45-6).   See additional comments 1,2,3,4.
Carbon Dioxide 01March 18, 1994Acceptable 
CF3I 0.0080.4May 22, 1996Acceptable with Narrowed Use Limits: For non-residential uses only. 
CFC-11 14,750 UnacceptableThis agent has been suggested for use on large outdoor fires for which non-ozone depleting alternatives are currently available. In addition, CAA section 610 bans the use of CFCs in portable extinguishers.
Dry Chemical 00March 18, 1994Acceptable 
Firebane® 1115Firebane® 111500October 4, 2011 (pdf) (201 KB)AcceptableFollow the manufacturer’s guidelines in the MSDS. EPA recommends that use of these systems be in accordance with the latest edition of NFPA 10 Standard for Portable Extinguishers.
Firebane® 1170Firebane® 117000October 4, 2011 (pdf) (201 KB)AcceptableFollow the manufacturer’s guidelines in the MSDS. EPA recommends that use of these systems be in accordance with the latest edition of NFPA 10 Standard for Portable Extinguishers.
Firebane® 1179Firebane® 117900October 4, 2011 (pdf) (201 KB)AcceptableFollow the manufacturer’s guidelines in the MSDS. EPA recommends that use of these systems be in accordance with the latest edition of NFPA 10 Standard for Portable Extinguishers.
Firebane® All-Weather 1115Firebane® All-Weather 111500October 4, 2011 (pdf) (201 KB)AcceptableFollow the manufacturer’s guidelines in the MSDS. EPA recommends that use of these systems be in accordance with the latest edition of NFPA 10 Standard for Portable Extinguishers.
Foam N/AN/AMarch 18, 1994Acceptable 
Gelled Halocarbon / Dry Chemical Suspension N/AN/AAugust 26, 1994AcceptableAllowable in the residential use market.
H Galden HFPEs 02,790 - 6,230January 27, 2003 (pdf) (154 KB)Acceptable with Narrowed Use Limits: For non-residential uses only.For operations that fill canisters to be used in streaming applications, EPA recommends the following:

- install and use adequate ventilation ;
- clean up all spills immediately in accordance with good industrial hygiene practices; and
- provide training for safe handling procedures to all employees that would be likely to handle containers of the agent or extinguishing units filled with the agent.

Discharge testing and training should be strictly limited only to that which is essential to meet safety or performance requirements. The agent should be recovered from the fire protection system in conjunction with testing or servicing, and recycled for later use or destroyed. As with other streaming agents, EPA recommends that potential risks of combustion by-products be labeled on the extinguisher (see UL 2129). EPA has no intention of duplicating or displacing OSHA coverage related to the use of personal protective equipment (e.g., respiratory protection), fire protection, hazard communication, worker training or any other occupational safety and health standard with respect to halon substitutes. 
HCFC-123 FE-2320.0277March 18, 1994Acceptable: For non-residential uses only. 
HCFC-124 FE-2410.022609August 26, 1994Acceptable: For non-residential uses only. 
HFC-227ea FM-20003,220April 28, 1999 (pdf) (236 KB)Acceptable with Narrowed Use Limits: For non-residential uses only.Discharge testing and training should be strictly limited only to that which is essential to meet safety or performance requirements. The agent should be recovered from the fire protection system in conjunction with testing or servicing, and recycled for later use or destroyed.
HFC-236fa FE-3609,810April 28, 1999 (pdf) (236 KB)Acceptable with Narrowed Use Limits: Acceptable in non-residential uses when manufactured using any process that does not convert perfluoroisobutylene (PFIB) directly to HFC-236fa in a single step.Discharge testing and training should be strictly limited only to that which is essential to meet safety or performance requirements.

The agent should be recovered from the fire protection system in conjunction with testing or servicing, and recycled for later use or destroyed.

Acceptable for local application systems inside textile process machinery.
Water 00March 18, 1994Acceptable 
Water Mist Systems using Potable or Natural Sea Water 00July 28, 1995 (pdf) (141 KB)Acceptable 

Additional Comments

  1. Discharge testing and training should be strictly limited only to that which is essential to meet safety or performance requirements.
  2. The agent should be recovered from the fire protection system in conjunction with testing or servicing, and recycled for later use or destroyed.
  3. As with other streaming agents, EPA recommends that potential risks of combustion by-products be labeled on the extinguisher (see UL 2129)
  4. EPA has no intention of duplicating or displacing OSHA coverage related to the use of personal protective equipment (e.g., respiratory protection), fire protection, hazard communication, worker training or any other occupational safety and health standard with respect to halon substitutes

Back to the Substitutes in Fire Suppression and Explosion Protection sector page.

Contact Us About the Significant New Alternatives Policy (SNAP) to ask a question, provide feedback, or report a problem.
Last updated on March 18, 2026
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