Preparation
4-(4-Aminophenyl)benzenamine double nitriding, First coupled with 2-Hydroxybenzoic acid
diazo, ?and then with?3-Amino-2-hydroxy-5-sulfobenzoic acid coupling,and Resorcinol coupled to accidentally coupled nitrogen compounds.
Properties and Applications
red light brown. Soluble in water for orange brown. The strong sulfuric acid for dark purple, yellow light brown for diluted. The dye solution to join strong hydrochloric acid have orange brown precipitation; Add thick sodium hydroxide solution for red brown.
|
Standard
|
Acid Resistance
|
Alkali Resistance
|
Light Fastness
|
Soaping
|
Water
|
|
Fading
|
Stain
|
Fading
|
Stain
|
|
ISO
|
3
|
3-4
|
6
|
4
|
|
4-5
|
|
|
AATCC
|
5
|
2-3
|
5-6
|
2
|
|
4
|
|
![5-[[4'-[[3-[(3-Carboxy-2-hydroxy-5-sulfophenyl)azo]-2,6-dihydroxyphenyl]azo]-1,1'-biphenyl-4-yl]azo]-2-hydroxybenzoic acid trisodium salt Structure](https://www.chemicalbook.com/CAS/20200119/GIF/6826-64-8.gif)