40 C.F.R. § 82 app Q to Subpart G of Part 82
Foam Blowing Unacceptable Substitutes
| End-use | Substitute | Decision | Further information |
| -Rigid polyurethane commercial refrigeration -Rigid polyurethane sandwich panels -Rigid polyurethane slabstock and other foams | HCFC-22, HCFC-142b as substitutes for HCFC-141b | Unacceptable1 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. |
| -Rigid polyurethane and polyisocyanurate laminated boardstock -Rigid polyurethane appliance -Rigid polyurethane spray and commercial refrigeration, and sandwich panels -Rigid polyurethane slabstock and other foams -Polystyrene extruded insulation boardstock and billet -Phenolic insulation board and bunstock -Flexible polyurethane -Polystyrene extruded sheet | HCFC-22, HCFC-142b as substitutes for CFCs | Unacceptable2 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. |
1 For existing users of HCFC-22 and HCFC-142b as of November 4, 2005 other than in marine applications, the unacceptability determination is effective on March 1, 2008; for existing users of HCFC-22 and HCFC-142b as of November 4, 2005 in marine applications, including marine flotation foam, the unacceptability determination is effective on September 1, 2009. For an existing user of HCFC-22 or HCFC-142b that currently operates in only one facility that it does not own, and is scheduled to transition to a non-ODS, flammable alternative to coincide with a move to a new facility and installation of new process equipment that cannot be completed by March 1, 2008, the unacceptability determination is effective January 1, 2010.
2 For existing users of HCFC-22 and HCFC-142b in polystyrene extruded insulation boardstock and billet and the other foam end-uses, as of November 4, 2005, the unacceptability determination is effective on January 1, 2010.
40 C.F.R. 82 app Q to Subpart G of Part 82