Direct Brown 191

Direct Brown 191 화학적 특성, 용도, 생산

• 제조 방법

  4-Aminobenzenesulfonic acid diazo, and Benzene-1,3-diamine coupling.

• Properties and Applications

  red light brown. Soluble in water for yellow orange, soluble in ethanol for yellow. The strong sulfuric acid in orange, diluted to orange still. The dye solution to join strong hydrochloric acid have orange brown precipitation; Add thick sodium hydroxide solution discoloration.
  

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

Direct Brown 191 준비 용품 및 원자재