Preparation
4-(4-Aminophenyl)benzenamine double nitriding, first with 2-Hydroxy-3-methylbenzoic acid coupling, again with ?7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.
Properties and Applications
blue-ray red. Soluble in water for red orange brown, soluble in ethanol in red. The strong sulfuric acid in the dark for, for the red light brown after diluted. The dye solution to join strong hydrochloric acid for red light brown, have precipitation; Add thick sodium hydroxide solution for orange brown, have precipitation.
|
Standard
|
Acid Resistance
|
Alkali Resistance
|
Light Fastness
|
Soaping
|
Water
|
|
Fading
|
Stain
|
Fading
|
Stain
|
|
ISO
|
3
|
3-4
|
4
|
1-2
|
|
3
|
|
