1-(4-sulfo-1-naphthylazo)-2-naphthol-6,8-disulfonic acid, EINECS 230-648-1, 1-(4-sulpho-1-naphthylazo)-2-naphthol-6,8-disulphonic acid, 7-HYDROXY-8-[(4-SULFONAPHTHYL)AZO]NAPHTHALENE-1,3-DISULFONIC ACID, 7-Hydroxy-8-((4-sulphonaphthyl)azo)naphthalene-1,3-disulphonic acid, 2-Hydroxy-[1.1']azonaphthalin-trisulfonsaeure-(6.8.4'), (Naphthalin-sulfonsaeure-(1))-(4 azo 1)-(naphthol-(2)-disulfonsaeure-(6.8)), 7-hydroxy-8-(4-sulfo-[1]naphthylazo)-naphthalene-1,3-disulfonic acid, 7-Hydroxy-8-(4-sulfo-[1]naphthylazo)-naphthalin-1,3-disulfonsaeure