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2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-[2-[4-[2-[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl]-2,5-dimethylphenyl]diazenyl]-, sodium salt (1:3)

CAS No.
6227-12-9
Chemical Name:
2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-[2-[4-[2-[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl]-2,5-dimethylphenyl]diazenyl]-, sodium salt (1:3)
Synonyms
Direct Violet 57;C.I.Direct Violet 57:C.I.27865;2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-[2-[4-[2-[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl]-2,5-dimethylphenyl]diazenyl]-, sodium salt (1:3)
CBNumber:
CB84780412
Molecular Formula:
C34H28N5NaO11S3
Molecular Weight:
801.79
MDL Number:
MOL File:
6227-12-9.mol

2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-[2-[4-[2-[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl]-2,5-dimethylphenyl]diazenyl]-, sodium salt (1:3) Chemical Properties,Uses,Production

Preparation

4-Amino-5-hydroxynaphthalene-2,7-disulfonic aciddiazo, and 2,5-Dimethylbenzenamine coupling, its product to diazo, in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.

Properties and Applications

blue purple. Soluble in water for blue purple, slightly soluble in alcohol. The strong sulfuric acid for green light blue, purple precipitation after diluted. The dye solution to join strong hydrochloric acid has the purple precipitation; Add thick sodium hydroxide solution for purple.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4-5 4-5 5-6 3 3-4

2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-[2-[4-[2-[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl]-2,5-dimethylphenyl]diazenyl]-, sodium salt (1:3) Preparation Products And Raw materials

2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-[2-[4-[2-[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl]-2,5-dimethylphenyl]diazenyl]-, sodium salt (1:3) Direct Violet 57 C.I.Direct Violet 57:C.I.27865 6227-12-9
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