6-chloro-N-(7-(2,4-dinitrophenylazo)-8-hydroxy-6-sulfo-2-naphthyl)-N'-(5,7-disulfo-2-naphthyl)-1,3,5-triazine-2,4-diamine, tripotassium salt
6-chloro-n-(7-(2,4-dinitrophenylazo)-8-hydroxy-6-sulfo-2-naphthyl)-n'-(5,7-disulfo-2-naphthyl)-1,3,5-triazine-2,4-diamine, tripotassium salt