3,12,16,17-tetrachloroviolanthrene-5,10-dione

Dinaphtho[1,2,3-cd:3′,2′,1′-lm]perylene-5,10-dione in solvent (Phthalic anhydride or 1,2,4 – Trichlorobenzene) in 140 ~ 145 ℃ chlorinated.

red light blue to red light navy blue. Dark blue powder. Alkaline reduction leuco for blue; Acid reduction leuco for purple. To cotton directness high. Used for dyeing cotton fabric for red light blue to red light navy blue. Also can be used for cotton fabric direct printing, color resist printing and discharge printing, also can be used for silk dyeing.

Standard	Ironing Fastness	Chlorine bleach	Light Fastness	Mercerized	Oxygen bleach	Soaping
						Fading	Stain
ISO	4-5	4-5	6-7	3-4	4-5	4-5	5