C.I. Direct Red 112 Usage And Synthesis

Preparation

in reflux conditions (or a little take pressure), in sodium hydroxide solution ?(E)-2-(2-sulfo-4-nitrostyryl)-5-nitrobenzenesulfonic acid?with ?2-Aminobenzenesulfonic acid sodium diazotization and Naphthalen-1-amine coupled with heating products. Reaction to the different proportion of material that get different commodity dye.

Properties and Applications

dark red yellow light. Soluble in water for orange brown, slightly soluble in alcohol. The strong sulfuric acid for blue-ray in black and Gray light black, dilute for yellow brown to olive after brown. The dye solution with strong hydrochloric acid have yellow olive brown precipitation; Add thick sodium hydroxide solution for palm light orange.

C.I. Direct Red 112(12262-21-4)Related Product Information

• disodium 7-[(4-aminobenzoyl)amino]-4-hydroxy-3-[[3-methyl-4-[(3-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate
• sodium 7-[(3-aminobenzoyl)amino]-4-hydroxy-3-(phenylazo)naphthalene-2-sulphonate
• DIRECT RED 122
• Naphtho[2,1-d]thiazole-8-sulfonic acid, 2-(4-aminophenyl)-6-hydroxy-7-[(2-methylphenyl)azo]-, monosodium salt
• 2-Naphthalenesulfonic acid, 3,3'-[carbonylbis(imino-3,1-phenyleneazo)]bis[7-amino-4-hydroxy-, disodium salt
• trisodium 2-[4-[[6-[[[[4-(acetamido)phenyl]amino]carbonyl]amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]-3-sulphonatophenyl]-6-methylbenzothiazole-7-sulphonate
• disodium 7-[(4-aminobenzoyl)amino]-4-hydroxy-3-[[4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate
• DIRECT RED 111
• 2-Naphthalenesulfonic acid, 7-[[[[4-(acetylamino)phenyl]amino]carbonyl]amino]-3-[[4-[(2,4-dichloro-6-sulfophenyl)azo]-3-methylphenyl]azo]-4-hydroxy-, disodium salt