70942-15-3 Chromate(1-), (3-hydroxy-4-((1-hydroxy-8-sulfo-2-naphthalenyl)azo)-1-naphthalenesulfonato(4-))-, sodium EINECS 275-033-9 Sodium (3-hydroxy-4-((1-hydroxy-8-sulpho-2-naphthyl)azo)naphthalene-1-sulphonato(4-))chromate(1-)