Lists of Substitutes for ODS in Foam Blowing

Substitutes are reviewed on the basis of ozone depletion potential, global warming potential, toxicity, flammability, and exposure potential as described in the final SNAP rule (59 FR 13044; file size is 967K). Lists of acceptable and unacceptable substitutes are updated several times each year. A chronological list of SNAP updates is available from the hotline.

The SNAP program makes decisions on a particular substitute in a particular end-use within a larger sector. For example, within the refrigeration and air conditioning sector, HFC-134a is acceptable as a substitute for CFC-12 in new and retrofitted household refrigerators. Acceptable substitutes are listed by end-use. These lists include substitutes that are either acceptable , acceptable subject to narrowed use limits, or acceptable subject to use conditions. Because the number of unacceptable substitutes is very small, they are listed by sector.

Please note: Originally, EPA used generic names instead of trade names. A list links generic and trade names. Since the May 1996 Final Rule, however, all lists have used trade names.

• Rigid Polyurethane: Appliance
• Rigid Polyurethane: Spray, Commercial Refrigeration, and Sandwich Panels
• Flexible Polyurethane
• Integral Skin Polyurethane
• Polystyrene: Extruded Sheet
• Polyolefin
• Rigid Polyurethane: Slabstock and Other
• Polystyrene: Extruded Boardstock & Billet
• Rigid Polyurethane & Polyisocyanurate Laminated Boardstock
• Phenolic Insulation Board & Bunstock