1,7-Anthracenedisulfonicacid,8-amino-5-[[4-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-3-sulfophenyl]amino]-9,10-dihydro-9,10-dioxo-,trisodium salt (9CI), 1,7-Anthracenedisulfonicacid,8-amino-5-[[4-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-3-sulfophenyl]amino]-9,10-dihydro-9,10-dioxo-,sodium salt (1:3),