Basic information Safety Supplier Related

disodium 4-amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-(1-naphthylazo)naphthalene-2,7-disulphonate

Basic information Safety Supplier Related

disodium 4-amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-(1-naphthylazo)naphthalene-2,7-disulphonate Basic information

Product Name:
disodium 4-amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-(1-naphthylazo)naphthalene-2,7-disulphonate
Synonyms:
  • disodium 4-amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-(1-naphthylazo)naphthalene-2,7-disulphonate
  • 2,7-Naphthalenedisulfonic acid, 4-amino-3-(2,5-dichlorophenyl)azo-5-hydroxy-6-(1-naphthalenylazo)-, disodium salt
  • Acid green 19 (C.I. 20440)
  • 4-Amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-(naphthalen-1-ylazo)-2,7-naphthalenedisulfonic acid disodium salt
  • C.I.20440
  • C.I.Acid Green 19
  • Wool Fast Green B
  • Acid Green 19
CAS:
5850-34-0
MF:
C26H15Cl2N5Na2O7S2
MW:
690.44214
EINECS:
2274481
Mol File:
5850-34-0.mol
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disodium 4-amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-(1-naphthylazo)naphthalene-2,7-disulphonate Chemical Properties

EPA Substance Registry System
2,7-Naphthalenedisulfonic acid, 4-amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-(1-naphthalenylazo)-, disodium salt (5850-34-0)
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disodium 4-amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-(1-naphthylazo)naphthalene-2,7-disulphonate Usage And Synthesis

Preparation

2,5-Dichlorobenzenamine diazo, and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?in acid conditions coupled, its product again with diazo of Naphthalen-1-amine in alkaline conditions coupled.

Properties and Applications

Dark blue light green. Soluble in water for blue light green, and partly dissolved in ethanol. The strong sulfuric acid for blue-ray black, diluted change to blue. The dye solution to join strong hydrochloric acid for blue-ray green; Add thick sodium hydroxide solution for red light blue.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 3 3 5 4 4 2 4 5

disodium 4-amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-(1-naphthylazo)naphthalene-2,7-disulphonate Supplier

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