6441-98-1

3-Amino-4-hydroxybenzenesulfonic acid diazotization, and 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one coupling.

dark red light orange. Soluble in water, soluble in ethanol apply for green yellow. In concentrated sulfuric acid to green light yellow, after dilution is still green yellow. Its aqueous solution to join concentrated hydrochloric acid for green yellow; Crowding sodium hydroxide for green yellow. Used for wool fabric dyeing.

Standard	Ironing Fastness	Light Fastness	Fulling		Persperation Fastness	Soaping	Water
			Alkali	Acid
ISO	3	6-7	3-4	3	5	4	4-5