5-[[4-[[6-anilino-4-[(8-hydroxy-3,6-disulpho-1-naphthyl)amino]-1,3,5-triazin-2-yl]amino]phenyl]azo]salicylic acid, sodium salt

2-Hydroxy-5-[[4-[[4-[(8-hydroxy-3,6-disulfo-1-naphthalenyl)amino]-6-(phenylamino)-1,3,5-triazine-2-yl]amino]phenyl]azo]benzoic acid/sodium,(1:x) salt