2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-((4-((4-((2-hydroxy-6-sulfo-1-naphthalenyl)azo)-2-methylphenyl)methyl)-3-methylphenyl)azo)-, sodium salt 3-Hydroxy-4-((4-((4-((2-hydroxy-6-sulpho-1-naphthyl)azo)-o-tolyl)methyl)-m-tolyl)azo)naphthalene-2,7-disulphonic acid, sodium salt 85030-31-5 Azo dye compd. EINECS 285-155-4