6-Chloro-2-[(1,5-disulfonaphthyl-2-azo)-1-hy- droxy-3,6-disulfonaphthyl-8-amino]-4-[(2- sulfatoethyl)sulfonylphenylazo-1-hydroxy- 3,5-disulfonaphthyl-8-amino]-1,3,5-triazin potassium sodium salt

1,5-Naphthalenedisulfonic acid, 2-8-4-chloro-6-8-hydroxy-4,6-disulfo-7-4-2-(sulfooxy)ethylsulfonylphenylazo-1-naphthalenylamino-1,3,5-triazin-2-ylamino-1-hydroxy-3,6-disulfo-2-naphthalenylazo-, potassium sodium salt