Substitutes in Polyolefin

Substitutes are reviewed on the basis of ozone depletion potential, global warming potential, toxicity, flammability, and exposure potential. Lists of acceptable and unacceptable substitutes are updated several times each year. A chronological list of SNAP updates is also available.

Note: SNAP Notices and Final Rules published in the Federal Register take precedence over all information on the web site.

Note: Under the section 610 Nonessential Products Ban, the sale and distribution of polyolefin foam manufactured with HCFCs is banned except for closed cell rigid polyethylene foam when such foam is suitable in shape, thickness, and design to be used as a product that provides insulation around pipes used in heating, plumbing, refrigeration, or industrial process systems.

Acceptable Substitutes for ODS in Polyolefin

Substitute	ODS Being Replaced
HFC-134a	CFC-11, CFC-12, CFC-114, and HCFCs
Methylene Chloride	CFC-11, CFC-12, CFC-114
HFC-152a	CFC-11, CFC-12, CFC-114, and HCFCs
Saturated Light Hydrocarbons (C3-C6)	CFC-11, CFC-12, CFC-114, and HCFCs
HCFC-22 / Saturated Light Hydrocarbons (C3-C6) Blends¹	CFC-11, CFC-12, CFC-114
HFC-152a / Saturated Light Hydrocarbons (C3-C6) Blends	CFC-11, CFC-12, CFC-114; HCFC-22, HCFC-142b, and blends thereof
Electroset Technology	CFC-11, CFC-12, CFC-114; HCFC-22, HCFC-142b, and blends thereof
HCFC-142b¹	CFC-11, CFC-12, CFC-114
HCFC-22¹	CFC-11, CFC-12, CFC-114
HCFC-22 / HCFC-142b Blends¹	CFC-11, CFC-12, CFC-114
HFC-143a	CFC-11, CFC-12, CFC-114
Carbon Dioxide	CFC-11, CFC-12, CFC-114, and HCFCs
Water	HCFCs
HFC-245fa	CFC-11, HCFCs
Exxsol Blowing Agents	HCFCs
Ecomate™	CFC-11, CFC-12, CFC-114, HCFCs
HFC-365mfc	HCFC-141b; HCFC-22, HCFC-142b, and blends thereof
Formacel® TI	HCFC-22, HCFC-142b
HFO-1234ze	HCFC-22, HCFC-142b, and blends thereof

¹Under EPA's phaseout regulations implementing section 605(a) of the Clean Air Act, virgin HCFC-22 and HCFC-142b may no longer be used as foam blowing agents as of 1/1/2010. This is an additional restriction beyond SNAP requirements.

Substitutes for ODS that are Acceptable with Use Conditions in Polyolefin

None at this time for any ODS.

Substitutes for ODS that are Acceptable with Narrowed Use Restrictions in Polyolefin

None at this time for any ODS.

Unacceptable Substitutes

Substitute	ODS Being Replaced
HCFC-141b	CFC-11
HCFC-124	All

Substitutes in Polyolefin

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