1-Naphthalenesulfonicacid, 3-hydroxy-4-[(1-hydroxy-2-naphthalenyl)azo]-7-nitro-, monosodium salt(9CI); C.I. Mordant Black 11, monosodium salt (8CI); Chromogene Black ET (6CI);1-(1-Hydroxy-2-naphthylazo)-6-nitro-2-naphthol-4-sulfonic acid, sodium salt;Acid Chrome Black A; Acid Chrome Black ET; Acid Chrome Black ET extra; AcidChrome Black ETN; Acid Chrome Black Special; Acid Chrome Black T; Acid ChromeBlack TDS; Acid Mordant Black T; Alizarine Chrome Black PT; Alizarine ChromeBlack PT Supra; Alizarine Chrome Black PT Supra Special; Anthranol Chrome BlackT; Azochromol Black T; C.I. 14645; C.I. Mordant Black 11; Calcochrome Black T;Chromazine Black T; Chrome Black ET; Chrome Black ETOO; Chrome Black PB; ChromeBlack Special; Chrome Black T; Chrome Black TK; Chrome Black TX; Chrome DeepBlack T; Chrome Fast Black CAT; Chrome Fast Black KIT; Chrome Fast Black T;Chrome Fast Black TS; Chromocard Black T; Chromogen Black ET 100; ChromogenBlack ET-OO; Chromogen Black ETR; Chromogene Black ET extra; Chromogene BlackETO-CF; Chromogene Black ETOO Special; Chromogene Black ETOO Supra CF;Chromogene Black T; Chromogene Black T 160; Cromal Deep Black NS; DiacromoBlack PA; Diacromo Black PSS; Diadem Chrome Black DFA; Diadem Chrome Black T;Diadem Chrome Black TDS; Diadem Chrome Black TW; Diamantine Black T; DiamondBlack PT; Durochrome Black ETOO; Durochrome Black T; Durochrome Black TS;Durochrome Black WDFA; EBT; Eniacromo Black PA; Erio Chrome Black TN;Eriochrome Black DW; Eriochrome Black T; Eriochrome Black TDW; Eriochrome BlackTFD; Eriochrome Black TND; Eriochrome Black TSS; Fast Chrome Black T; FenakromBlack ET; Hispacrom Black T; Java Chrome Black T; Kenachrome Black T;Lighthouse Chrome Black T; Magracrom Black A; Mitsui Chrome Black PB; MordantBlack 11; Mordant Black 2B; Omega Chrome Black S; Omega Chrome Black T; OmegaChrome Black TDW; Orbokrom Black TS; Pontachrome Black TA; Potting Black C;Potting Chrome Black CL; Salicina Black C Extra; Salicine Chrome Black HC;Schultz No. 241;