Direct blue 215 (C.I. 24415) Usage And Synthesis

Preparation

3,3′-Dimethoxylbenzidine double nitriding, first and 4-Amino-5-hydroxynaphthalene-1,3-disulfonic acid, and then in three alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.

Properties and Applications

green light blue. Soluble in water for blue purple, and adequate soluble in alcohol. The strong sulfuric acid for Tracy in blue, and in purple for diluted. The dye solution to join strong hydrochloric acid for red light blue; Add thick sodium hydroxide solution for dark purple, have precipitation.

Direct blue 215 (C.I. 24415)(6771-80-8)Related Product Information

• C.I. Direct Blue 191
• trisodium [mu-[3-[[4'-[(2,8-dihydroxy-6-sulpho-1-naphthyl)azo]-3,3'-dihydroxy[1,1'-biphenyl]-4-yl]azo]-4,5-dihydroxynaphthalene-2,7-disulphonato(7-)]]dicuprate(3-)
• Direct Blue 199
• 2,9-Triphenodioxazinedisulfonic acid, 6,13- dichloro-3,10-bis[(4-chlorophenyl)amino]-, disodium salt 2,9-triphenodioxazinedisulfonic acid, 6,13-dichloro-3,10-bis[(4-chlorophenyl)am 9-triphenodioxazinedisulfonic acid,6,13-dichloro-3,10-bis[(4-chlorophenyl)amino]- disodium salt 2,9-Triphenodioxazinedisulfonic acid,6,13-dichloro-3,10-bis[(4-chlorophenyl)amino]-,disodium salt
• Direct Blue 201
• CHLORAZOL BLACK BH
• DIRECT BLUE 202
• 5-Amino-4-hydroxy-3-[[4'-[(2-hydroxy-1-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt
• 5-Amino-4-hydroxy-3-[[4'-[(1-hydroxy-4-sulfonaphthalen-2-yl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2,7-naphthalenedisulfonic acid trisodium salt