Acid Black 234

Name	Acid Black 234
Synonyms	Acid Black BA Acid Black NBG Acid Black 234 Acid Black NB-G Dynacid Black 2N C.I.Acid Black 234 Coriamine Black NB-G Apollo Leather Black NGRL 2,7-Naphthalenedisulfonic acid, 4-amino-3-((4-(((4-((2,4-diaminophenyl)azo)phenyl)sulfonyl)amino)phenyl)azo)-5-hydroxy-6-(phenylazo)-, disodium salt 2, 7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[[[4-[(2, 4-diaminophenyl)azo]phenyl]sulfonyl]amino]phenyl]azo]-5-hydroxy-6-(phenylazo), disodium salt
CAS	157577-99-6
EINECS	605-104-5

LogP	-1.86 at 20℃
EPA chemical substance information	information provided by: ofmpeb.epa.gov (external link)
Use	weak acid black NB-G is mainly used for wool, silk, cotton, viscose dyeing, also can be used for leather coloring.
production method	with 4,4 '-diaminobenzenesulfonyl aniline, H acid, aniline and M-phenylenediamine as raw materials, firstly 4,4'-diaminobenzenesulfonyl aniline and aniline were diazotized, coupled with H acid, respectively, and finally with M-phenylenediamine to give the product. After salting out, filtration, drying, grinding to get the finished product..

Last Update：2024-04-09 21:01:54

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