Direct Brown 57 Chemische Eigenschaften,Einsatz,Produktion Methoden
synthetische
4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, and then in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? coupling, its product to diazo, and Benzene-1,3-diamine coupling.
Properties and Applications
dark red light brown. Soluble in water for dark red light brown, soluble in ethanol and soluble fiber element, slightly soluble in acetone, insoluble in other organic solvents. The strong sulfuric acid as dark blue light in purple, dilute red after brown precipitation; In 10% of sulfuric acid for blue-ray gray. The dye solution to join 10% sodium hydroxide solution for purplish red color.
Standard
Acid Resistance
Alkali Resistance
Light Fastness
Soaping
Water
Fading
Stain
Fading
Stain
ISO
4
4
1
1-2
2
AATCC
5
5
2
2
2
Direct Brown 57 Upstream-Materialien And Downstream Produkte