Mordant Red 19

Chemical Properties

red powder

Preparation

3-Amino-5-chloro-2-hydroxybenzenesulfonic acid diazotization, and 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one coupling.

Properties and Applications

brilliant red. Soluble in water for orange red, right amount soluble in ethanol for brown light orange, soluble in acetone and Cellosolve, insoluble in other organic solvent. In concentrated sulfuric acid for yellow orange, dilution after yellow, there was a slight precipitate; In concentrated nitric acid for shallow olive brown solution. Dye aqueous solution to join 10% sodium hydroxide solution for yellow orange.

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