68610-93-5 Chromate(3-), bis(3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-1-naphthalenesulfonato(3-))-, trihydrogen, nitro derivs. Chromium dye from chromium acetate, 3-hydroxy-4-((2-hydroxynaphth-1-yl)azo)-1-naphthalenesulfonic acid, 3-hydroxy-4-((2-hydroxynaphth-1-yl)azo)-7-nitro-1-naphthalenesulfonic acid EINECS 271-881-9