4,4'-sulphonylbis(2,6-dibromophenol) is reactive flame retardant, used in epoxy resin, polycarbonate resin, polyester, phenolic resin, polysulfone, polyether sulfone, can also be used as additive of ABS. HIPS unsaturated polyesters, adhesives, coatings, etc., also used as the intermediate of organic synthesis. Characteristics are high efficient flame retardant, and strong heat resistance .