PONTACYL VIOLET 4BSN Chemical Properties

Colour Index 

16580

form 

powder to crystal

color 

Gray to Dark purple to Black

CAS DataBase Reference

1681-60-3

EPA Substance Registry System

2,7-Naphthalenedisulfonic acid, 3-[(4-aminophenyl)azo]-4,5-dihydroxy-, disodium salt (1681-60-3)

Safety Information

HS Code 

3204.12.5090

PONTACYL VIOLET 4BSN Usage And Synthesis

Preparation

(a) 4-Nitrobenzenamine diazo, and 4,5-Dihydroxynaphthalene-2,7-disulfonic acid?coupling (C.I.Acid Red 176, C.I. 16575), then will the nitro reduction; (b) N-(4-aminophenyl)acetamide?diazo, and 4,5-Dihydroxynaphthalene-2,7-disulfonic acidcoupling (C.I.Acid Violet 6, C.I.16600), then acetyl hydrolysis.

Properties and Applications

blue purple. Soluble in water for blue purple, hardly soluble in ethanol and soluble fiber element. The strong sulfuric acid for blue-ray in red, for wine red after diluted. In nitric acid solution for wine red, in strong hydrochloric acid for chestnut solution; In 10% of sodium hydroxide solution for chestnut solution. In water solution to join hydrochloric acid for red; Join gas oxidation sodium for red orange brown.

PONTACYL VIOLET 4BSN(1681-60-3)Related Product Information

• acid violet 17 (C.I. 42650)
• Acid Violet 131
• CHROMOTROPIC ACID SODIUM SALT
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• ACID VIOLET 48
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• PONTACYL VIOLET 4BSN
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