sodium 4-[[4-[benzyl(ethyl)amino]phenyl]azo]-2,5-dichlorobenzenesulphonate

Preparation

4-Amino-2,5-dichlorobenzenesulfonic acid diazo, and N-benzyl-N-ethylbenzenamine coupling.

Properties and Applications

red light orange. Dark red light orange powder. Soluble in water, but soluble in ethanol, glycol ether. The strong sulfuric acid dyes for deep blue light green, diluted into brown precipitation; In nitric acid solution for olive, to green light amber color. Its water solution for brown, add strong hydrochloric acid to blu-ray black, with precipitation; Add thick sodium hydroxide solution colour and lustre is unchanged. Used for wool, silk and polyamide fiber dyeing and such as direct printing, also used in plastic and leather casein of dyeing and paper coating.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
AATCC	5	4		4			4