Substitute	ODPODPA 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.	GWPGWPThe 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 Date	Comments[2]	Flammable
Carbon Dioxide	0	1	March 18, 1994; June 8, 1999		no
HFO-1234ze	0	6	September 30, 2009		no
HFO–1336mzz(Z) ((Z)-1,1,1,4,4,4-hexafluorobut-2-ene; FEA-1100; Formacel® 1100)	0	9	October 21, 2014		no
HCFC-123	0.02	77	March 18, 1994		no
HFC-152a	0	124	March 18, 1994; June 8, 1999		yes
HCFC-124	0.022	609	July 22, 2002	Unacceptable Substitute; Alternatives exist with lower or zero ODP.	no
HCFC-141b	0.12	725	September 30, 2004; July 20, 2015	Unacceptable Substitute; Alternatives exist with lower or zero ODP.	no
HFC-365mfc	0	794	September 30, 2009; June 16, 2010; July 20, 2015; December 1, 2016	HFC-365mfc and blends thereof acceptable subject to narrowed use limits for military or space- and aeronautics-related applications and unacceptable for all other uses as of January 1, 2020. Unacceptable for military applications as of January 1, 2022 and for space- and aeronautics-related applications as of January 1, 2025.	yes
HFC-245fa	0	1,030	December 6, 1999; August 21, 2003; July 20, 2015; December 1, 2016	HFC-245fa and blends thereof acceptable subject to narrowed use limits for military or space- and aeronautics-related applications and unacceptable for all other uses as of January 1, 2020. Unacceptable for military applications as of January 1, 2022 and for space- and aeronautics-related applications as of January 1, 2025.	no
HFC-134a	0	1,430	March 18, 1994; June 8, 1999; July 20, 2015; December 1, 2016	HFC-134a and blends thereof acceptable subject to narrowed use limits for military or space- and aeronautics-related applications and unacceptable for all other uses as of January 1, 2020. Unacceptable for military applications as of January 1, 2022 and for space- and aeronautics-related applications as of January 1, 2025.	no
Methylal (dimethoxymethane)	0	<3	October 21, 2014		yes
Formacel® TI	0	1,330 - 1,500	September 30, 2009; July 20, 2015; December 1, 2016	Acceptable subject to narrowed use limits for military or space- and aeronautics-related applications and unacceptable for all other uses as of January 1, 2020. Unacceptable for military applications as of January 1, 2022 and for space- and aeronautics-related applications as of January 1, 2025.	no
Saturated Light Hydrocarbons (C3-C6)	0	3 - 10	March 18, 1994; April 11, 2000; June 16, 2010		yes
Formacel® Z-6	0	370 - 1,290	August 10, 2012; July 20, 2015; December 1, 2016	Acceptable subject to narrowed use limits for military or space- and aeronautics-related applications and unacceptable for all other uses as of January 1, 2020. Unacceptable for military applications as of January 1, 2022 and for space- and aeronautics-related applications as of January 1, 2025.	N/A
Trans-1-chloro-3,3,3-trifluoroprop-1-ene (SolsticeTM 1233zd(E))	0.00024 - 0.00034	4.7 - 7	August 10, 2012		no
Methyl Formate	0	5 or less	December 18, 2000		yes
EcomateTM	0	5 or less	August 21, 2003		yes
TranscendTM Technologies	0	5 or less	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.	yes [1]
Exxsol Blowing Agents	0	5 or less	December 6, 1999; June 16, 2010		yes
Formic Acid	0	5 or less	September 5, 1996		yes [3]
HCFC-141b/HCFC-123 Blends	>0	N/A	July 20, 2015	Unacceptable as of September 18, 2015.	no
Electroset Technology	0	N/A	August 26, 1994; June 16, 2010		N/A
Water	0	N/A	June 8, 1999		no
Vacuum Panels	0	N/A	January 13, 1995; June 19, 2000		N/A
Blends of HFC-245fa and HCFC-22	>0	N/A	August 21, 2003; July 20, 2015	Unacceptable as of September 18, 2015.	no
HCFC-22, HCFC-142b or blends thereof	>0	N/A	July 22, 2002; July 20, 2015	Unacceptable Substitute; Alternatives exist with lower or zero ODP.	no

¹ When blended with fire retardant and/or other SNAP-approved alternatives, the flammability of Transcend^TM Technologies can be reduced to make a formulation that is either combustible or non-flammable (contact the manufacturer of Transcend^TM Technologies for more information).

² Use of closed cell foam products and products that contain closed cell foam manufactured with an unacceptable foam blowing agent prohibited on or before the later of: 1) December 1, 2017, or 2) the date when the foam blowing agent is unacceptable.

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.