1,4-Bis(2-sulfo-p-toluidino)anthraquinone, diammonium salt 67970-27-8 Benzenesulfonic acid, 2,2'-((9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino)bis(5-methyl-, diammonium salt Diammonium 4,4'-((9,10-dihydro-9,10-dioxo-1,4-anthrylene)diimino)bis(toluene-3-sulphonate) EINECS 268-001-0