英文名称:4-Hydroxy-3-[[4'-[[4-[(1-Hydroxy-4-Sodiosulfo-2-Naphthalenyl)Azo]-1-Naphthalenyl]Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]Naphthalene-1-Sulfonic Acid Sodium Salt; C.I.31905; Benzo Black Blue R; 4-Hydroxy-3-[[4'-[[4-[(1-hydroxy-4-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-1-sulfonic acid sodium salt