7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt

CAS No.
6226-99-9
Chemical Name:
7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt
Synonyms
C.I.27640;Direct Blue 140;C.I.Direct Blue 140;Diazo Indigo Blue 3R;C.I.Direct Blue 140:C.I.27640;7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt
CBNumber:
CB82174185
Molecular Formula:
Molecular Weight:
0
MDL Number:
MOL File:
6226-99-9.mol

7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt Chemical Properties,Uses,Production

Preparation

3-(4-Amino-2-sulfophenylamino)-2,3-dioxopropanoic acid diazo, and Naphthalen-1-amine coupling, product to diazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, and then 2-(4-Aminophenylamino)-2-oxoacetic acid hydrolysis base.

Properties and Applications

red light blue. Soluble in water for darkness purplish red color, soluble in ethanol for purple. The strong sulfuric acid for blue-ray green, diluted for purple. The dye solution to join strong hydrochloric acid has the purple precipitation; Add thick sodium hydroxide solution for red sauce, precipitation.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 5 5 3 3 3-4

7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt Preparation Products And Raw materials

7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt C.I.27640 C.I.Direct Blue 140 Diazo Indigo Blue 3R Direct Blue 140 C.I.Direct Blue 140:C.I.27640 6226-99-9