3H-2,1-Benzoxathiol-3-one, 4,5,6,7-tetrabromo-, 1,1-dioxide 4,5,6,7-Tetrabromo-3H-2,1-benzoxathiol-3-one 1,1-dioxide 4,5,6,7-Tetrabromo-o-sulfobenzoic anhydride 68460-01-5 EINECS 270-624-8