C.I. Direct brown 151, disodium salt

C.I. Direct brown 151, disodium salt Chemische Eigenschaften,Einsatz,Produktion Methoden

• synthetische

  4-(4-Aminophenyl)benzenamine double nitriding, in alkaline conditions before 3-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupling, product to diazo, and Benzene-1,3-diamine (2 Moore) coupled.

• Properties and Applications

  dark red light brown. Slightly soluble in water for red sauce, soluble in ethanol. In the dark for the strong sulfuric acid, diluted light for palm gray, with black precipitation. The dye solution with strong hydrochloric acid has the purple precipitation; With strong sodium hydroxide solution for red to blue light is red.
  

  Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
  				Fading	Stain	Fading	Stain
  ISO	4	4-5	2	3		4
  AATCC	5	5	3-4	2-3		5

C.I. Direct brown 151, disodium salt Upstream-Materialien And Downstream Produkte