EcoFlame B-522 was a reactive flame retardant, Its high purity is of benefit to the formulator. Thermosetting polyester resins can be formulated over a wide range of compositions to provide a broader selection of resin properties than those available with anhydride flame retardants. Resins formulated with EcoFlame B-522 have high flame retardancy, minimal thermal discoloration and excellent light stability.

The high bromine content of EcoFlame B-522 and its ready reaction into polyurethanes make it suitable for use in rigid polyurethane foams. It is increasingly used in CFC-free foam systems designed to meet more stringent standards of flame retardancy.