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Regulations last checked for updates: Mar 14, 2025
Title 40 - Protection of Environment last revised: Nov 14, 2025
All Titles
Title 40
Chapter I
Part 82
Subpart G
Appendix Appendix K - Appendix K to Subpart G of Part 82—Substitutes Subject to Use Restrictions and Unacceptable Substitutes Listed in the July 22, 2002, Final Rule Effective August 21, 2002
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Appendix Appendix K - Appendix K to Subpart G of Part 82—Substitutes Subject to Use Restrictions and Unacceptable Substitutes Listed in the July 22, 2002, Final Rule Effective August 21, 2002
Foam Blowing—Unacceptable Substitutes
End-use
Substitute
Decision
Comments
Replacements for HCFC-141b in the following rigid polyurethane/polyisocyanurate applications:
—Boardstock
—Appliance
—Spray
HCFC-22, HCFC-142b and blends thereof
Unacceptable Closed cell foam products and products containing closed cell foams manufactured with these substitutes on or before December 1, 2017 may be used after that date
Alternatives exist with lower or zero-ODP.
All foam end-uses
HCFC-124
Unacceptable Closed cell foam products and products containing closed cell foams manufactured with this substitute on or before December 1, 2017 may be used after that date
Alternatives exist with lower or zero-ODP.
[81 FR 86883, Dec. 1, 2016]
authority:
42 U.S.C. 7414
,
7601
,
7671
source:
57 FR 33787, July 30, 1992, unless otherwise noted.
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