Synonyms: Cobaltate(5-), bis(5-((4-amino-6-chloro-1,3,5-triazin-2-yl)amino)-4-(hydroxy-kappaO)-3-(2-(2-(hydroxy-kappaO)-5-nitrophenyl)diazenyl-kappaN1)-2,7-naphthalenedisulfonato(4-))-, sodium hydrogen (1:4:1);5-((4-Amino-6-chloro-1,3,5-triazin-2-yl)amino)-4-hydroxy-3-((2-hydroxy-5-nitrophenyl)azo)-2,7-naphthalenedisulfonic acid, cobalt complex (2:1), tetrasodium salt;Cobaltate(5-), bis(5-((4-amino-6-chloro-1,3,5-triazin-2-yl)amino)-4-(hydroxy-kappaO)-3-((2-(hydroxy-kappaO)-5-nitrophenyl)azo-kappaN1)-2,7-naphthalenedisulfonato(4-))-, tetrasodium hydrogen;Cobaltate(5-), bis(5-((4-amino-6-chloro-1,3,5-triazin-2-yl)amino)-4-hydroxy-3-((2-hydroxy-5-nitrophenyl)azo)-2,7-naphthalenedisulfonato(4-))-, tetrasodium hydrogen;Hydrogen tetrasodium bis(5-((4-amino-6-chloro-1,3,5-triazin-2-yl)amino)-4-hydroxy-3-((2-hydroxy-5-nitrophenyl)azo)naphthalene-2,7-disulphonato(4-))cobaltate(5-)