Direct Red 224

Preparation

7-Amino-4-hydroxynaphthalene-2-sulfonic acid and 2,4,6-Trichloro-1,3,5-triazine condensation, again with diazo have 2-Amino-5-methoxybenzenesulfonic acid coupling, and then 2-(2-Hydroxyethylamino)ethanol processing.

Properties and Applications

colourful red yellow light. Used for cellulose fiber and polyester/cotton, polyester/stick blended a bath dyeing of, also can be used for paper color.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	3-4	4-5	4	4-5 (40℃)	4-5	4	3-4