AMIDO GREEN BLACK B Chemical Properties

Melting point:

>300℃

EPA Substance Registry System

2,7-Naphthalenedisulfonic acid, 4-amino-3-[(4-aminophenyl)azo]-5-hydroxy-6-(phenylazo)-, disodium salt (5850-39-5)

AMIDO GREEN BLACK B Usage And Synthesis

Preparation

4-Nitrobenzenamine diazo, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupling, and its product under alkaline conditions and then with the coupling diazotized aniline, and reducing the nitro group with sodiumn.

Properties and Applications

dark blue light green green light to dark. Dark green light to black powder. Soluble in water and soluble fiber element, slightly soluble in alcohol, insoluble in other organic solvents. Dyes in 10% of sodium hydroxide solution for purple solution; The strong sulfuric acid for blue-ray green, diluted into blue, precipitation; In nitric acid solution for brown. The water solution is dark blue light green, add thick sodium hydroxide solution to purple. This product is suitable for the wool, silk, wool blended fabric, polyamide fiber of dyeing and printing, also suitable for leather and paper color.

AMIDO GREEN BLACK B(5850-39-5)Related Product Information

• ACID GREEN 27 (C.I. 61580)
• Acid Green 40
• ACID BLUE 25
• Acid Green 68
• Acid Green 1
• ALIZARIN GREEN
• Acid Green 28
• Acid Black 1
• Direct Black 19
• AMIDO GREEN BLACK B
• Acid Black 234
• DIAMINE GREEN B
• Direct Black 38
• Acid Green 4
• ERIO GREEN B
• ACID GREEN 41
• ACID GREEN 3
• LIGHT GREEN SF YELLOWISH