3,3',5,5'-tetrabromobisphenol A CHEBI:33217 A bromobisphenol that is 4,4'-methanediyldiphenol in which the methylene hydrogens are replaced by two methyl groups and the phenyl rings are substituted by bromo groups at positions 2, 2', 6 and 6'. It is a brominated flame retardant. tetrabromobisphenol A flame retardant