Preparation
O-Methylaniline diazo, and 2-(3-Aminophenyl)-6-hydroxynaphtho[2,1-d]thiazole-8-sulfonic acid coupling.
Properties and Applications
red. Soluble in water for red, soluble in ethanol for orange red. The strong sulfuric acid for product red, diluted in red. The dye solution to join strong hydrochloric acid for red; Add thick sodium hydroxide solution have orange brown precipitation.
|
Standard
|
Acid Resistance
|
Alkali Resistance
|
Light Fastness
|
Soaping
|
Water
|
|
Fading
|
Stain
|
Fading
|
Stain
|
|
ISO
|
3-4
|
5
|
3
|
2-3
|
|
3
|
|
![1H-Naphth[1,2-d]imidazole-8-sulfonic acid, 2-(3-aminophenyl)-6-hydroxy-7-[(2-methylphenyl)azo]-, monosodium salt Structure](https://www.chemicalbook.com/CAS/20200331/GIF/6826-61-5.gif)