1-Naphthalenesulfonic acid, 3-hydroxy-4-[(1-hydroxy-2-naphthalenyl)azo]-7-nitro-, monosodium salt 1-Naphthalenesulfonic acid, 3-hydroxy-4-[(1-hydroxy-2-naphthyl)azo]-7-nitro-, sodium salt 1787-61-7 2-Naphthol-4-sulfonic acid, 1-[(1-hydroxy-2-naphthyl)azo]-6-nitro-, sodium salt Acid Chrome Black A Acid Chrome Black ET Acid Chrome Black ET extra Acid Chrome Black Special Acid Chrome Black ethyl Acid Chrome Black ethyl extra Alizarine Chrome Black PT Alizarine Chrome Black PT Supra Anthranol Chrome Black T Azochromol Black T BC 78924 C.I. 14645 C.I. Mordant Black 11 C.I. Mordant Black 11, monosodium salt Calcochrome Black T Chromazine Black T Chrome Black ETOO Chrome Black PB Chrome Black Special Chrome Black T Chrome Black TK Chrome Black TX Chrome Deep Black