C.I. Direct Brown 67

C.I. Direct Brown 67 Chemische Eigenschaften,Einsatz,Produktion Methoden

• synthetische

  4-Aminonaphthalene-1-sulfonic acid (90%), 8-Aminonaphthalene-2-sulfonic acid (10%) diazo, and Naphthalen-1-amine coupling, product to diazo, and Benzene-1,3-diamine coupling.

• Properties and Applications

  Red light brown. Soluble in water for orange brown, slightly soluble in ethanol for yellow orange brown. The strong sulfuric acid for dark blue black, diluted for brown. The dye solution with strong hydrochloric acid with brown 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	2	4	2	1		1

C.I. Direct Brown 67 Upstream-Materialien And Downstream Produkte