10279-69-3 12392-58-4 3-Hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-1-naphthalenesulfonic acid, monosodium salt, chromium complex 34464-60-3 5610-64-0 ACID BLACK 52 C.I. Acid Black 52 CI 15711 Chromate(3-), bis(3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-1-naphthalenesulfonato(3-))-, disodium hydrogen EINECS 227-029-3 HSDB 4205