40 CFR Part 82, Appendix K
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
| 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]