| Identification | Back Directory | [Name]
AMIDO GREEN BLACK B | [CAS]
5850-39-5 | [Synonyms]
C.I.20495
CI NO 20495
acid black g
acid black hg
Dark Green B
Acid Dark Green
Multacid Green B
C.I.Acid Green 20
acid dark green a
Acid Dark Green 6B
AMIDO GREEN BLACK B
Fabracid Green S-JB
Atlacid Dark Green B
Naphthazine Green AD
Rifa Acid Dark Green A
Vicoacid Dark Green B.
Best Acid Dark Green A
ACID GREEN 20 (C.I. 20495)
Everacid Levelling Dark Green A
AMIDO GREEN BLACK B ISO 9001：2015 REACH
disodium 4-amino-3-[(4-aminophenyl)azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
4-Amino-3-[(4-aminophenyl)azo]-5-hydroxy-6-(phenylazo)-2,7-naphthalenedisulfonic acid disodium salt
2,7-Naphthalenedisulfonic acid, 4-amino-3-(4-aminophenyl)azo-5-hydroxy-6-(phenylazo)-, disodium salt
isodium,(6E)-4-amino-3-[(4-aminophenyl)diazenyl]-5-oxo-6-(phenylhydrazinylidene)naphthalene-2,7-disulfonate
disodium,(6E)-4-amino-3-[(4-aminophenyl)diazenyl]-5-oxo-6-(phenylhydrazinylidene)naphthalene-2,7-disulfonate
4-Amino-3-[2-(4-aminophenyl)diazenyl]-5-hydroxy-6-(2-phenyldiazenyl)-2,7-naphthalenedisulfonic acid sodium salt | [EINECS(EC#)]
227-452-3 | [Molecular Formula]
C22H16N6Na2O7S2 | [MDL Number]
MFCD00068415 | [MOL File]
5850-39-5.mol | [Molecular Weight]
586.51 |
| Hazard Information | Back Directory | [Chemical Properties]
Dark bluish-green to greenish-black powder. Soluble in water; aqueous solution exhibits a dark bluish-green color. Addition of concentrated sodium hydroxide solution results in a purple color. Soluble in ethylene glycol ether, slightly soluble in ethanol, and insoluble in other organic solvents. The dye forms a purple solution in 10% sodium hydroxide solution. In concentrated sulfuric acid, the dye forms a bluish-green solution, which becomes blue upon dilution with a precipitate. In concentrated nitric acid, the dye forms a brown solution. | [Uses]
Acid green 20 is a green dye that can be decolorized by ultrasonic irradiation. | [Preparation]
4-Nitrobenzenamine diazo, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupling, and its product under alkaline conditions and then with the coupling diazotized aniline, and reducing the nitro group with sodiumn. | [Properties and Applications]
dark blue light green green light to dark. Dark green light to black powder. Soluble in water and soluble fiber element, slightly soluble in alcohol, insoluble in other organic solvents. Dyes in 10% of sodium hydroxide solution for purple solution; The strong sulfuric acid for blue-ray green, diluted into blue, precipitation; In nitric acid solution for brown. The water solution is dark blue light green, add thick sodium hydroxide solution to purple. This product is suitable for the wool, silk, wool blended fabric, polyamide fiber of dyeing and printing, also suitable for leather and paper color.
|
Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
|
Fastness to seawater
|
|
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
|
|
ISO
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3-4
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3
|
1
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4-5
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2
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1
|
4
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1
|
|
AATCC
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3
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2-3
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2-3
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3
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2-3
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2-3
|
3
|
3
|
| [References]
[1] Zhang Z, et al. Optimization for decolorization of azo dye acid green 20 by ultrasound and H2O2 using response surface methodology[J]. Journal of hazardous materials, 2009, 172(2-3): 1388-1393. |
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