EINECS 247-236-2, Benzenesulfonic acid,3-[2-(1,5-dihydroxy-2-naphthalenyl)diazenyl]-4-hydroxy, 3-((1,5-Dihydroxy-2-naphthyl)azo)-4-hydroxybenzenesulphonic acid, (Phenol-sulfonsaeure-(4))-(2 azo 2)-(1.5-dioxy-naphthalin), 3-(1,5-Dihydroxy-[2]naphthylazo)-4-hydroxy-benzolsulfonsaeure, 3-(1,5-dihydroxy-[2]naphthylazo)-4-hydroxy-benzenesulfonic acid, Benzenesulfonic acid,3-((1,5-dihydroxy-2-naphthalenyl)azo)-4-hydroxy