2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]phenyl]azo]-4-hydroxy-, disodium salt

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2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]phenyl]azo]-4-hydroxy-, disodium salt Basic information
Product Name:2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]phenyl]azo]-4-hydroxy-, disodium salt
Synonyms:2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]phenyl]azo]-4-hydroxy-, disodium salt;Direct Black 2;C.I.Direct Black 2:C.I.31575
CAS:8003-65-4
MF:
MW:0
EINECS:616-816-0
Product Categories:
Mol File:Mol File
2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]phenyl]azo]-4-hydroxy-, disodium salt Structure
2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]phenyl]azo]-4-hydroxy-, disodium salt Chemical Properties
Safety Information
MSDS Information
2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]phenyl]azo]-4-hydroxy-, disodium salt Usage And Synthesis
PreparationN-(4-aminophenyl)acetamide diazo, and 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid, amino, acylation coupled hydrolysis again diazo, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid, its product to three diazo, and 2-(3-Aminophenylamino)ethanolcoupling.
Properties and Applicationsblack. Blue gray powder, soluble in water for violet black, soluble in ethanol and soluble fiber element. The strong sulfuric acid in blue, diluted red for purple; In nitric acid for brown in the light purple. The dye solution to join strong hydrochloric acid for red light purple; Add thick sodium hydroxide solution for purplish red color. Mainly used for dyeing cotton and glue, can also be used for leather and pulp dyeing.
Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4 4 3 3 4
2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]phenyl]azo]-4-hydroxy-, disodium salt Preparation Products And Raw materials
Raw materials1-Naphthylamine-7-sulfonic acid-->2-(3-aminophenylamino)ethanol-->6-Amino-4-hydroxy-2-naphthalenesulfonic acid-->1-Aminonaphthalene-6-sulfonic acid-->4'-Aminoacetanilide
Tag:2-Naphthalenesulfonic acid, 6-[[2-amino-4-[(2-hydroxyethyl)amino]phenyl]azo]-3-[[4-[[4-amino-6(or 7)-sulfo-1-naphthalenyl]azo]phenyl]azo]-4-hydroxy-, disodium salt(8003-65-4) Related Product Information
Direct Black 201 C.I. Direct Black 20, disodium salt Direct Black 196 Direct Black 199 Direct Black 198 Direct Black 202 Glycine, N-[5-amino-4-[[7-[[4-[(4-amino-6-sulfo-1-naphthalenyl)azo]phenyl]azo]-8-hydroxy-6-sulfo-2-naphthalenyl]azo]-2-methylphenyl]-, trisodium salt DIRECT BLACK 22 Direct Black 197