disodium 5-[[4'-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo][1,1'-biphenyl]-4-yl]azo]salicylate Chemical Properties

EPA Substance Registry System

C.I. Direct Red 1, disodium salt (2429-84-7)

disodium 5-[[4'-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo][1,1'-biphenyl]-4-yl]azo]salicylate Usage And Synthesis

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, first with 2-Hydroxybenzoic acid coupling, again in acid conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid?coupling.

Properties and Applications

blue-ray red. Purple powder. Soluble in water for yellow light red, solubility of 40 g/L (85 ℃), slightly soluble in ethanol, acetone, soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid in blue, diluted to become Red, light Red sauce precipitation; In nitric acid for brown in the red. The dye solution to join strong hydrochloric acid for red light brown, have precipitation appear; Add thick sodium hydroxide solution is for palm orange. Cellulose fiber of dyeing, devoured performance is good, in the 80 ~ 100 ℃ maximum when affinity. This product to sensitive fights. Used for dyeing cotton or viscose, also can be used for direct printing of cotton or viscose to discharge printing color, also used for silk, wool, stick/hair, stick/cotton, leather and pulp dyeing, also can be used in the manufacture of organic pigment sediment color.

disodium 5-[[4'-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo][1,1'-biphenyl]-4-yl]azo]salicylate(2429-84-7)Related Product Information

• Mordant Red 7
• Benzoic acid, 2-[(2-hydroxy-6-sulfo-1-naphthalenyl)azo]-, disodium salt
• Mordant Red 66
• 1,3-Benzenediol, 4-[(2-hydroxy-5-nitrophenyl)azo]-
• Mordant Red 65
• Mordant Red 71
• Mordant Red 73
• Mordant Red 67
• 2-[[6-[[(2-Carboxyphenyl)amino]sulfonyl]-2-hydroxy-1-naphthalenyl]azo]benzoic acid disodium salt
• disodium 5-[[4'-[(2-amino-8-hydroxy-6-sulphonato-1-naphthyl)azo][1,1'-biphenyl]-4-yl]azo]salicylate
• 6-Amino-4-hydroxy-2-naphthalenesulfonic acid
• BENZIDINE ACETATE
• Sodium salicylate
• YELLOW AB
• 4-PHENYLAZOPHENOL
• 5-AMINOSALICYLIC ACID SODIUM SALT
• 3-AMINOBENZOIC ACID SODIUM SALT
• 2-HYDROXY-5-PHENYLAZOBENZALDEHYDE