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