加溴酸钾和溴化钾，再加盐酸会发生反应:BrO3- +5Br- +6H+=3Br2+3H2OC6H6O(苯酚)+3Br2=C6H3OBr3(2,4,6-三溴苯酚)+3HBr生成的2,4,6-三溴苯酚是白色絮状沉淀
