Appendix M - Appendix M to Subpart G of Part 82—Unacceptable Substitutes Listed in the September 30, 2004 Final Rule, Effective November 29, 2004
Foam Blowing—Unacceptable Substitutes
| End-use | Substitute | Decision | Comments | All foam end-uses:
—rigid polyurethane and polyisocyanurate laminated boardstock —rigid polyurethane appliance —rigid polyurethane spray and commercial refrigeration, and sandwich panels | HCFC-141b | 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. | —rigid polyurethane slabstock and other foams
—polystyrene extruded insulation boardstock and billet —phenolic insulation board and bunstock —flexible polyurethane —polystyrene extruded sheet —Except for: 1 —space vehicle —nuclear —defense —research and development for foreign customers |
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1 Exemptions for specific applications are identified in the list of acceptable substitutes, which is available on the SNAP Web site at: