Direct Red 173

Подготовка

4-Amino-3-hydroxy-7-nitronaphthalene-1-sulfonic acid diazo, and 1-(4-Aminophenyl)-3-methyl-1H-pyrazol-5(4H)-one?coupling, and then make the light gasification.

Свойства и приложения

dark red. Soluble in water for red light brown, and adequate soluble in alcohol. For the strong sulfuric acid in orange, yellow for red after diluted. The dye solution to join strong sodium hydroxide solution for orange brown; Join strong hydrochloric acid is palm light orange, precipitation.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	3-4	5	6	4		4-5
AATCC	5	4	6-7	4-5		5