... retardant,mainly used in PP,ABS,AS and PVC. Tetrabromobisphenol A bis (2,3-dibromopropyl ether) :Appearance: white powder ... : less than 0.06%Witeness :more than 94Usage: A reactive flame-retardant,mainly used in foamed polystyrene, unsaturated ... and the like to resist burning also together with hexabrcmocyclododecane,having a synergistic effect Tetrabromobisphenol A bis (2,3-dibromopropyl ether)