Acid Black 234

Acid Black 234
  • CAS No.:157577-99-6
Other grades of this product :
Acid Black 234 Basic information
Product Name:Acid Black 234
Synonyms:2, 7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[[[4-[(2, 4-diaminophenyl)azo]phenyl]sulfonyl]amino]phenyl]azo]-5-hydroxy-6-(phenylazo), disodium salt;Acid Black BA;Acid Black NBG;Acid Black NB-G;Apollo Leather Black NGRL;C.I.Acid Black 234;Coriamine Black NB-G;Dynacid Black 2N
CAS:157577-99-6
MF:C34H26N10Na2O9S3
MW:860.8
EINECS:605-104-5
Product Categories:
Mol File:157577-99-6.mol
Acid Black 234 Chemical Properties
density 1.193[at 20℃]
vapor pressure 0Pa at 25℃
pka7.62[at 20 ℃]
Water Solubility 215g/L at 20℃
LogP-1.86 at 20℃
CAS DataBase Reference157577-99-6(CAS DataBase Reference)
EPA Substance Registry System2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[[[4-[(2,4-diaminophenyl)azo]phenyl]sulfonyl]amino]phenyl]azo]-5-hydroxy-6-(phenylazo)-, disodium salt (157577-99-6)
Safety Information
MSDS Information
Acid Black 234 Usage And Synthesis
Preparation4-Amino-N-(4-aminophenyl)benzenesulfonamide double nitriding,sulfonylurea aniline in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidcoupling, aniline diazo, and the above the products in alkaline conditions coupling, and then Benzene-1,3-diamine coupled.
Flammability and ExplosibilityNonflammable
Properties and Applicationsblack. Mainly used for wool, silk, cotton and glue dyeing, also can be used for leather dyeing.

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