red light orange. Soluble in water and ethanol for yellow light brown. The strong sulfuric acid for orange brown, with golden yellow diluted. In water solution to join strong hydrochloric acid for yellow brown; Add thick sodium hydroxide solution for red light orange brown. Can be used for wool, silk fiber dyeing etc, and can also be used to dye the leather and manufacturing organic pigments.
|
Standard
|
Light Fastness
|
Soaping
|
Persperation Fastness
|
Oxygen bleaching
|
Fastness to seawater
|
|
Fading
|
Stain
|
Fading
|
Stain
|
Fading
|
Stain
|
|
ISO
|
4
|
2-3
|
2
|
2-3
|
1
|
|
3
|
|
![Benzenesulfonic acid, 4-[(2-hydroxy-1-naphthalenyl)azo]-3-nitro-, monosodium salt Structure](/CAS/20200331/GIF/5850-82-8.gif)