Direct Brown 148

Direct Brown 148 化学特性,用途語,生産方法

• 製造方法

  N,N’-bis(3-aminophenyl)urea?double nitriding, first and 2,4-Diaminobenzenesulfonic acid coupling, again with Resorcinol coupling.

• Properties and Applications

  brown. Slightly soluble in water for yellow brown, slightly soluble in alcohol. The strong sulfuric acid in red orange for brown, diluted yellow brown to orange for brown. The dye solution was added concentrated hydrochloric acid with red brown precipitate; Add thick sodium hydroxide solution for yellow brown to orange brown; Sodium hydroxide solution to dilute the same color.
  

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

Direct Brown 148 上流と下流の製品情報