Direct Brown 227

Preparation

4-Amino-N-(4-aminophenyl)benzamide double nitriding, first coupled with 2-Hydroxybenzoic acid , again and 4-Aminobenzenesulfonic acid diazo, in acid conditions and Benzene-1,3-diamine match-mismatch things coupled.

Properties and Applications

Red light brown.

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