| Identification | Back Directory | [Name]
disodium 4-amino-5-hydroxy-3-[(2-methyl-5-nitrophenyl)azo]-6-(phenylazo)naphthalene-2,7-disulphonate | [CAS]
5850-41-9 | [Synonyms]
C.I.20500
Acid Black 28
C.I.Acid Black 28
Naphthalene Black 12BR
C.I.Acid Black 28:C.I.20500
disodium 4-amino-5-hydroxy-3-[(2-methyl-5-nitrophenyl)azo]-6-(phenylazo)naphthalene-2,7-disulphonate
4-Amino-5-hydroxy-3-[(5-nitro-2-methylphenyl)azo]-6-(phenylazo)naphthalene-2,7-disulfonic acid disodium salt
disodium,(6E)-4-amino-3-[(2-methyl-5-nitrophenyl)diazenyl]-5-oxo-6-(phenylhydrazinylidene)naphthalene-2,7-disulfonate | [EINECS(EC#)]
227-453-9 | [Molecular Formula]
C23H16N6Na2O9S2 | [MOL File]
5850-41-9.mol | [Molecular Weight]
630.517 |
| Hazard Information | Back Directory | [Preparation]
2-Methyl-5-nitrobenzenamine diazo, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidcoupling, and then aniline?diazo, in alkaline conditions and formation of single accidentally coupled nitrogen compounds. | [Properties and Applications]
blue and black. Soluble in water, slightly soluble in ethanol, very few soluble in acetone, insoluble in benzene. The strong sulfuric acid for green, diluted green for blue-ray.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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Fading
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Stain
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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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5
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3
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3
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2
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