| Identification | Back Directory | [Name]
4,5-Dihydroxy-3-[[4'-[(2-hydroxy-6-sodiosulfo-1-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt | [CAS]
6426-69-3 | [Synonyms]
C.I.22490
Dianil Blue 4R
Direct Blue 58
C.I.Direct Blue 58
C.I.Direct Blue 58:C.I.22490
4,5-Dihydroxy-3-[[4'-[(2-hydroxy-6-sodiosulfo-1-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt
2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-((4'-((2-hydroxy-6-sulfo-1-naphthalenyl)azo)(1,1'-biphenyl)-4-yl)azo)-, trisodium salt | [Molecular Formula]
C32H19N4Na3O12S3 | [MOL File]
6426-69-3.mol | [Molecular Weight]
816.677 |
| Hazard Information | Back Directory | [Preparation]
4-(4-Aminophenyl)benzenamine double nitriding, First coupling with?4,5-Dihydroxynaphthalene-2,7-disulfonic acid coupling, again with 6-Hydroxynaphthalene-2-sulfonic acid?coupling. | [Properties and Applications]
dark red light blue. Soluble in water for purple. The strong sulfuric acid in blue, diluted into purple solution, then a red light purple precipitation. The dye solution to join hydrochloric acid have red light purple precipitation; Sodium hydroxide solution to a red solution.
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Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Soaping
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Water
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Fading
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Stain
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Fading
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Stain
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ISO
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2
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2
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2-3
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1-2
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1-2
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