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2-Naphthalenesulfonic acid, 7-(acetylamino)-3-[[4-[(4-chloro-2-sulfophenyl)azo]-3-methylphenyl]azo]-4-hydroxy-, disodium salt

Basic information Safety Supplier Related

2-Naphthalenesulfonic acid, 7-(acetylamino)-3-[[4-[(4-chloro-2-sulfophenyl)azo]-3-methylphenyl]azo]-4-hydroxy-, disodium salt Basic information

Product Name:
2-Naphthalenesulfonic acid, 7-(acetylamino)-3-[[4-[(4-chloro-2-sulfophenyl)azo]-3-methylphenyl]azo]-4-hydroxy-, disodium salt
Synonyms:
  • 2-Naphthalenesulfonic acid, 7-(acetylamino)-3-[[4-[(4-chloro-2-sulfophenyl)azo]-3-methylphenyl]azo]-4-hydroxy-, disodium salt
  • C.I.Direct Red 8:C.I.28105/28015
  • Direct Red 8
CAS:
5873-18-7
MF:
C25H18ClN5Na2O8S2
MW:
662.00166
EINECS:
611-737-8
Mol File:
5873-18-7.mol
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2-Naphthalenesulfonic acid, 7-(acetylamino)-3-[[4-[(4-chloro-2-sulfophenyl)azo]-3-methylphenyl]azo]-4-hydroxy-, disodium salt Usage And Synthesis

Preparation

2-Amino-5-chlorobenzenesulfonic acid diazo, and a coupling ?m-Toluidine?, product to diazo, and ?7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications

colourful red blue light. Soluble in water for product red, slightly soluble in ethanol, insoluble in other organic solvents. The strong sulfuric acid for blue, pink is diluted; In nitric acid in purple precipitation. The dye solution with strong hydrochloric acid have blue-ray red to purplish red precipitate; Add thick sodium hydroxide solution have red light purple precipitation.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
AATCC 4-5 4-5 4 2 2

2-Naphthalenesulfonic acid, 7-(acetylamino)-3-[[4-[(4-chloro-2-sulfophenyl)azo]-3-methylphenyl]azo]-4-hydroxy-, disodium saltSupplier

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2-Naphthalenesulfonic acid, 7-(acetylamino)-3-[[4-[(4-chloro-2-sulfophenyl)azo]-3-methylphenyl]azo]-4-hydroxy-, disodium salt(5873-18-7)Related Product Information