Chromate(5-), bis(8-((5-((diethylamino)sulfonyl)-2-(hydroxy-kappaO)phenyl)azo-kappaN1)-7-(hydroxy-kappaO)-1,3-naphthalenedisulfonato(4-))-, tetrasodium hydrogen

3-Amino-N,N-diethyl-4-methoxybenzenesulfonamide diazo, and 7-Hydroxynaphthalene-1,3-disulfonic acid coupling, and then in water solution and sulfuric acid chromium common heating (130 ° C keep 2 hours, 135 ° C keep 2 hours), in contain alkali type sulphuric acid chromium dry for (in chrome complexation processes medium armor oxygen radicals displacement for hydroxyl).

blue-ray red.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	6-7	3-4		4	2		3-4
AATCC	5-6	3-4		4	1		4