Substitutes in Ice Skating Rinks

You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more. 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.

Many acceptable substitutes under SNAP may be restricted under the Technology Transitions Program. For more information on Technology Transitions Program restrictions, visit: https://www.epa.gov/climate-hfcs-reduction/technology-transitions-program

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

Filters              
Substitute Trade Name(s) Retrofit/New ODPA 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 table of all ozone-depleting substances (https://www3.epa.gov/ozone/science/ods/index.html) shows their ODPs, GWPs, and CAS numbers. 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. ASHRAEASHRAE is an international organization that establishes standards for the uniform testing and rating of heating, ventilation, air conditioning, and refrigeration equipment. It also conducts related research, disseminates publications, and provides continuing education to its members.
Designation
(Safety
Classification)		 SNAP Listing Date Listing Status
Ammonia Absorption   N 0 0 B2 September 5, 1996;
June 16, 2010		 Acceptable
Ammonia Vapor Compression   R/N 0 0 B2 March 18, 1994;
September 5, 1996;
June 16, 2010		 Acceptable
RB-276 Free Zone, HCFC Blend Delta  R/N 0.013 1,592 A1 September 5, 1996 Acceptable
Freeze 12 Freeze 12 R/N 0.013 1,606 A1 September 5, 1996 Acceptable
G2018C G2018C R/N 0.053 1,731 A1 September 5, 1996 Acceptable
R-414A GHG-X4, Autofrost, Chill-it, HCFC Blend Xi R/N 0.045 1,478 A1 September 5, 1996 Acceptable
HCFC-22   R/N 0.055 1,810 A1 March 18, 1994 Acceptable
HCFO-1233zd(E) (Trans-1-chloro-3,3,3-trifluoroprop-1-ene) Solstice® 1233zd(E) N <0.0004 3.7 A1 January 20, 2022 Acceptable
HFC-134a   R/N 0 1,430 A1 March 18, 1994;
June 16, 2010		 Acceptable
R-414B  Hot Shot, Kar Kool, HCFC Blend Omicron  R/N 0.098 3,337 A1 September 5, 1996 Acceptable
R-417C Hot Shot 2 R 0 1,820 A1 October 4, 2011 Acceptable
R-125/R-290/R-134a/R-600a (55.0/1.0/42.5/1.5) ICOR AT-22 R/N 0 2,530 A1 March 29, 2006;
June 16, 2010		 Acceptable
R-401A SUVA MP-39 R 0.037 1,182 A1 March 18, 1994 Acceptable
R-401B SUVA MP-66 R 0.040 1,288 A1 March 18, 1994 Acceptable
R-404A SUVA HP-62 R/N 0 3,920 A1 December 20, 2002 Acceptable
R-407A Klea 60, Klea 407A R/N 0 2,110 A1 August 26, 1994;
June 16, 2010		 Acceptable
R-407B Klea 61 R/N 0 2,800 A1 August 26, 1994;
June 16, 2010		 Acceptable
R-407C Suva 407C, Klea 407C R/N 0 1,770 A1 February 8, 1996;
December 20, 2002;
August 21, 2003		 Acceptable
R-407F  Genetron Performax LT R/N 0 1,820 A1 October 4, 2011 Acceptable
R-410A AZ-20, Suva 9100, Puron N 0 2,090 A1 February 8, 1996;
December 20, 2002		 Acceptable
R-410B   N 0 2,230 A1 February 8, 1996;
June 16, 2010		 Acceptable
R-417A ISCEON 59, NU-22 R/N 0 2,350 A1 December 6, 1999;
December 20, 2002;
June 16, 2010		 Acceptable
R-420A Choice R-420A R/N 0.008 1,536 A1 October 1, 2004 Acceptable
R-421A Choice R-421A R/N 0 2,630 A1 September 28, 2006;
June 16, 2010		 Acceptable
R-421B Choice R-421B R/N 0 3,190 A1 September 28, 2006;
June 16, 2010		 Acceptable
R-422A ISCEON 79 R/N 0 3,140 A1 October 1, 2004 Acceptable
R-422B ICOR XAC1, NU-22B R/N 0 2,530 A1 March 29, 2006;
June 16, 2010		 Acceptable
R-422C ICOR XLT1 R/N 0 3,390 A1 March 29, 2006;
June 16, 2010		 Acceptable
R-422D ISCEON MO29 R/N 0 2,730 A1 September 28, 2006;
June 16, 2010		 Acceptable
R-423A ISCEON 39TC R/N 0 2,280 A1 March 22, 2002;
June 16, 2010		 Acceptable
R-424A RS-44 R/N 0 2,440 A1 September 28, 2006;
June 16, 2010		 Acceptable
R-426A RS-24 R/N 0 1,510 A1 September 28, 2006;
June 16, 2010		 Acceptable
R-428A RS-52 R/N 0 3,610 A1 October 4, 2007;
June 16, 2010		 Acceptable
R-434A RS-45 R/N 0 3,250 A1 October 4, 2007;
June 16, 2010		 Acceptable
R-437A KDD6, ISCEON MO49 Plus R/N 0 1,810 A1 January 2, 2009 Acceptable
R-438A KDD5, ISCEON MO99 R/N 0 2,270 A1 October 4, 2007;
June 16, 2010		 Acceptable
R-442A RS-50 R 0 1,890 A1 May 17, 2013 Acceptable
R-744 (Carbon Dioxide, CO2)   N 0 1 A1 May 23, 2016 Acceptable
R-507, R-507A AZ-50 R/N 0 3,990 A1 December 20, 2002 Acceptable
RS-24 (2002 formulation)   R/N 0 1,510 A1 December 20, 2002;
June 16, 2010		 Acceptable
RS-44 (2003 formulation)   R/N 0 2,420 A1 June 16, 2010 Acceptable
THR-03   R/N 0 N/A A1 December 6, 1999 Acceptable
THR-04   R/N >0 N/A A1 June 8, 1999 Acceptable
R-448A Solstice® N-40 R/N 0 1,390 A1 October 4, 2018;
November 25, 2019		 Acceptable
R-449A Opteon™ XP 40 R/N 0 1,400 A1 October 4, 2018;
November 25, 2019		 Acceptable
R-449B Forane® 449B R/N 0 1,410 A1 October 4, 2018;
November 25, 2019		 Acceptable
R-450A Solstice® N-13 R/N 0 600 A1 October 4, 2018 Acceptable
R-513A Opteon™ XP 10 R/N 0 630 A1 October 4, 2018 Acceptable
HFO-1234yf   N 0 1 A2L June 13, 2024 Acceptable subject to use conditions: See rule for detailed conditions.
HFO-1234ze(E)   N 0 1 A2L June 13, 2024 Acceptable subject to use conditions: See rule for detailed conditions.
R-454C Opteon™ XL20 N 0 146 A2L June 13, 2024 Acceptable subject to use conditions: See rule for detailed conditions.
R-455A Solstice® L40X N 0 146 A2L June 13, 2024 Acceptable subject to use conditions: See rule for detailed conditions.
R-457A Forane® 457A N 0 137 A2L June 13, 2024 Acceptable subject to use conditions: See rule for detailed conditions.
R-516A Forane® 516A N 0 140 A2L June 13, 2024 Acceptable subject to use conditions: See rule for detailed conditions.

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Last updated on December 19, 2024