6408-57-7 69866-16-6 Benzenesulfonic acid, 2,2'-((9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino)bis(5-butyl-, disodium salt Disodium 2,2'-(9,10-dioxoanthracene-1,4-diyldiimino)bis(5-butylbenzenesulphonate) EINECS 229-061-3