69011-21-8 Benzene, diethenyl-, polymer with ethenylbenzene and ethenylethylbenzene, sulfonated, ammonium salt Benzene, diethenyl-, polymer with ethenylbenzene and ethenylethylbenzene, sulfonated, ammonium salts Ethenylbenzene, ethylethenylbenzene, diethenylbenzene polymer, sulfonated, ammonium salt