13421-53-9

CI 24790 is classed chemically as a disazo colour.

1,1-Bis(4-aminophenyl)cyclohexane double nitriding, and 4,6-Dihydroxynaphthalene-1-sulfonic acid (2 Moore) coupled, then use 1 Moore Benzenesulfonyl chloride for esterification.

red. Soluble in water for red, slightly soluble in alcohol in red. The strong sulfuric acid for purple; After dilute for pink. In water solution to join strong hydrochloric acid for red, add thick sodium hydroxide solution for red orange brown.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	5	4	3-4	4	3		4-5