| Identification | Back Directory | [Name]
4-Amino-3,6-bis[[4-[(2,4-diamino-5-methylphenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt | [CAS]
6745-67-1 | [Synonyms]
C.I.35260
Rayon Black R
Direct Black 28
Cutamin Black CV
C.I.Direct Black 28
Columbia Fast Black V
C.I.Direct Black 28:C.I.35260
4-Amino-3,6-bis[[4-[(2,4-diamino-5-methylphenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulfonic acid disodium salt
sodium,4-amino-3-[[4-[(2,4-diamino-5-methylphenyl)diazenyl]phenyl]diazenyl]-6-[[4-[(2,4-diamino-5-methylphenyl)diazenyl]phenyl]hydrazinylidene]-5-oxonaphthalene-2,7-disulfonic acid | [MOL File]
6745-67-1.mol |
| Hazard Information | Back Directory | [Preparation]
4-Nitrobenzenamine (2 Moore) diazo, one in acid conditions, a in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid (1 Moore) coupling, and then will the nitro reduction for amino, again diazo, and 4-Methylbenzene-1,3-diamine (2 Moore) coupled. | [Properties and Applications]
black. Soluble in water for blue-ray black, slightly soluble in ethanol is green. The strong sulfuric acid for blue-ray green, blue after diluted precipitation. The dye solution to join strong hydrochloric acid blue precipitation; Add thick sodium hydroxide solution for green light blue.
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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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2-3
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5
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3-4
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1-2
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2-3
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