Significant New Alternatives Policy (SNAP)

Substitutes in Integral Skin Polyurethane

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 acceptableHelpacceptableThis 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 unacceptableHelpUnacceptableThis 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.

             
Substitute ODPHelpODPA 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 (http://www.epa.gov/ozone/science/ods/index.html) shows their ODPs, GWPs, and CAS numbers. GWPHelpGWPThe 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. Flammable SNAP Listing Date Listing Status Further Information
Acetone 0 0.5 yes February 24, 1998;
June 16, 2010
Acceptable  
Blends of HFC-245fa and HCFC-22 >0 N/A no August 21, 2003;
July 20, 2015
Unacceptable as of September 18, 2015.  
Carbon Dioxide 0 1 no March 18, 1994;
June 8, 1999
Acceptable  
EcomateTM 0 5 or less yes August 21, 2003 Acceptable  
Electroset Technology 0 N/A N/A August 26, 1994;
June 16, 2010
Acceptable  
Exxsol Blowing Agents 0 5 or less yes December 6, 1999;
June 16, 2010
Acceptable  
Formacel® TI 0 1,330 - 1,500 no September 30, 2009;
July 20, 2015;
December 1, 2016
Unacceptable, except where allowed under narrowed use limits for military or space- and aeronautics-related applications, as of January 1, 2017.

Unacceptable for military applications as of January 1, 2022 and for space- and aeronautics-related applications as of January 1, 2025.
 
Formacel® Z-6 0 370 - 1,290 N/A[1] August 10, 2012;
July 20, 2015;
December 1, 2016
Unacceptable, except where allowed under narrowed use limits for military or space- and aeronautics-related applications, as of January 1, 2017.

Unacceptable for military applications as of January 1, 2022 and for space- and aeronautics-related applications as of January 1, 2025.
 
Formic Acid 0 5 or less yes [3] February 24, 1998 Acceptable  
HCFC-123 0.02 77 no March 18, 1994 Acceptable  
HCFC-124 0.022 609 no July 22, 2002 Unacceptable Alternatives exist with lower or zero ODP.
HFC-134a 0 1,430 no March 18, 1994;
June 8, 1999;
July 20, 2015;
December 1, 2016
Unacceptable, except where allowed under narrowed use limits for military or space- and aeronautics-related applications, as of January 1, 2017.

Unacceptable for military applications as of January 1, 2022 and for space- and aeronautics-related applications as of January 1, 2025.
 
HFC-152a 0 124 yes March 18, 1994;
June 8, 1999
Acceptable  
HFC-245fa 0 1,030 no December 6, 1999;
August 21, 2003;
July 20, 2015;
December 1, 2016
Unacceptable, except where allowed under narrowed use limits for military or space- and aeronautics-related applications, as of January 1, 2017.

Unacceptable for military applications as of January 1, 2022 and for space- and aeronautics-related applications as of January 1, 2025.
 
HFC-365mfc 0 794 yes September 30, 2009;
June 16, 2010;
July 20, 2015;
December 1, 2016
Unacceptable, except where allowed under narrowed use limits for military or space- and aeronautics-related applications, as of January 1, 2017.

Unacceptable for military applications as of January 1, 2022 and for space- and aeronautics-related applications as of January 1, 2025.
 
HFO-1234ze 0 6 no June 16, 2010 Acceptable  
HFO–1336mzz(Z) ((Z)-1,1,1,4,4,4-hexafluorobut-2-ene; FEA-1100; Formacel® 1100) 0 9 no October 21, 2014 Acceptable  
Methyl Formate 0 5 or less yes December 18, 2000 Acceptable  
Methylal (dimethoxymethane) 0 <3 yes October 21, 2014 Acceptable  
Methylene Chloride 0 8.7 no N/A Acceptable  
Saturated Light Hydrocarbons (C3-C6) 0 3 - 10 yes March 18, 1994;
April 11, 2000;
June 16, 2010
Acceptable  
Trans-1-chloro-3,3,3-trifluoroprop-1-ene (SolsticeTM 1233zd(E)) 0.00024 - 0.00034 4.7 - 7 no August 10, 2012 Acceptable  
TranscendTM Technologies 0 5 or less yes[2] March 29, 2006 Acceptable as an additive to SNAP-approved blowing agents in blends making up to 5% by weight of the total foam formulation.  
Water 0 N/A no June 8, 1999 Acceptable  

1 Some components and some blends are flammable.

2 When blended with fire retardant and/or other SNAP-approved alternatives, the flammability of TranscendTM Technologies can be reduced to make a formulation that is either combustible or non-flammable (contact the manufacturer of TranscendTM Technologies for more information).

3 Formic acid is mildly flammable with flashpoint of 68.9°C (156°F), lower flammability limit of 18.0% by volume, and NFPA flammability rating of 2.