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HomeProduct name listC.I. Direct red 74

C.I. Direct red 74

  • CAS NO.：8003-75-6
  • Empirical Formula: C32H24N6O7S2.2Na
  • Molecular Weight: 714.69

What is C.I. Direct red 74?

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, first and 6-Aminonaphthalene-2-sulfonic acid and 7-Aminonaphthalene-2-sulfonic acid coupling, and then in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications

blue-ray red. Soluble in water for red jujube, and adequate soluble in ethanol in red. The strong sulfuric acid in blue, diluted red for sauce. The dye solution to join strong hydrochloric acid for Red sauce, precipitation; Add thick sodium hydroxide solution for orange brown.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 3 4 1 2 1-2

Properties of C.I. Direct red 74

EPA Substance Registry System C.I. Direct Red 74 (8003-75-6)

Safety information for C.I. Direct red 74

Computed Descriptors for C.I. Direct red 74

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SODIUM CARBONATE SOLUTION 0.1N SMITHS REAGENT (VAGINAL SMEARS) LEAD ACETATE SOLUTION 10% HAEMATOXYLIN STAIN SOLUTION (HARRISS) SILICON GREASE HIGH VACCUUM THIOGLYCOLLIC ACID 80%

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disodium 4-amino-3-[[4'-[(2-amino-6-sulphonatonaphthyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-1-sulphonate
disodium 4-amino-3-[[4'-[(2-amino-6-sulphonatonaphthyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-1-sulphonate
4-Amino-3-[[4'-[(2,4-dihydroxyphenyl)azo]-3,3'-dimethyl-1,1'-biphenyl-4-yl]azo]-1-naphthalenesulfonic acid sodium salt
4-Amino-3-[[4'-[(2,4-dihydroxyphenyl)azo]-3,3'-dimethyl-1,1'-biphenyl-4-yl]azo]-1-naphthalenesulfonic acid sodium salt
7-[[[[4-(Acetylamino)phenyl]amino]carbonyl]amino]-4-hydroxy-3-[(2-methylphenyl)azo]-2-naphthalenesulfonic acid sodium salt
7-[[[[4-(Acetylamino)phenyl]amino]carbonyl]amino]-4-hydroxy-3-[(2-methylphenyl)azo]-2-naphthalenesulfonic acid sodium salt
7-[[[[4-(Acetylamino)phenyl]amino]carbonyl]amino]-4-hydroxy-3-[(2-methoxyphenyl)azo]-2-naphthalenesulfonic acid sodium salt
7-[[[[4-(Acetylamino)phenyl]amino]carbonyl]amino]-4-hydroxy-3-[(2-methoxyphenyl)azo]-2-naphthalenesulfonic acid sodium salt
[2,6'-Bibenzothiazole]-7-sulfonic acid, 2'-[4-[(2-hydroxy-6-sulfo-1-naphthalenyl)azo]phenyl]-6-methyl-, disodium salt
[2,6'-Bibenzothiazole]-7-sulfonic acid, 2'-[4-[(2-hydroxy-6-sulfo-1-naphthalenyl)azo]phenyl]-6-methyl-, disodium salt

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