Direct Brown 73

Direct Brown 73 価格

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Direct Brown 73 化学特性,用途語,生産方法

製造方法

4-(4-Aminophenyl)benzenamine double nitriding,first coupled with 2-Hydroxybenzoic acid, and then in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupling, product to diazo, 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

red light brown. Soluble in water for brown. The strong sulfuric acid for purple brown, for yellow brown solution diluted, accompanied by precipitation. The dye solution to join strong hydrochloric acid have dark brown precipitation; Add thick sodium hydroxide solution for brown.

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

Direct Brown 73 上流と下流の製品情報

原材料

準備製品

Direct Brown 73 生産企業

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• Direct Brown 73
• C.I.Direct Brown 73:C.I.35535