The EPA previously listed HFC-365mfc as an acceptable substitute for a number of foam blowing end uses (30 September 2009; 74 FR 50129). Solvay says SNAP approval of its Solkane 365/227 blends makes this third-generation foaming agent solution an acceptable substitute for ozone-depleting substances in rigid polyurethane spray and extruded polystyrene applications. Solkane 365/227 has been produced and successfully used for years in a broad range of PU and extruded polystyrene applications in Europe and Canada. In the USA, both HFC-365mfc and HFC-227ea are exempt from VOC (volatile organic compound) classification, an important point for many US customers. Approvals for additional PU applications also remain pending at EPA, says the company.Lisa Norton, Solvay's global sales and marketing manager for its Solkane insulation business, explains, "We greatly appreciate the strong support we have received from our foam customer base and know that our customers are eager to begin using this proven alternative in spray polyurethane and extruded polystyrene foams. Solvay can provide a credible, proven alternative and an unrivaled commercial, logistical and customer service network. We are really looking forward to serving the US foam market.The Solkane brand categories worldwide include refrigerants, foam blowing agents, solvents, fire extinguishing agents and further specialised niche markets. They are widely used in stationary and mobile AC refrigerant applications, insulating applications, and fire suppression as well as a range of cleaning applications.According to Solvay, Solkane 365/227 has become the product of choice internationally in a number of PU applications, including spray foam, where non-flammable blowing agents are essential or where high quality is requested. In addition to the applications recently approved in the USA, typical applications elsewhere globally include PU and extruded polystyrene pipe insulation, PU sandwich panels (continuous/discontinuous; construction/reefer), PU and polystyrene insulation panels, as well as PU block and integral foams.