vat black 16

Chemical Properties

Black powder with metallic luster. Insoluble in water, xylene, soluble in pyridine (blue with brownish red fluorescence). Dark purple in concentrated sulfuric acid. Reddish-purple in alkaline solution of insurance powder, yellowish-brown in acidic solution.

Preparation

Dinaphtho[1,2,3-cd:3′,2′,1′-lm]perylene-5,10-dione in concentrated sulfuric acid with hydroxylamine processing.

Properties and Applications

blue light grey. With metallic luster of black powder. Insoluble in water, Xylene, slightly soluble in Pyridine for blue, brown light red fluorescence. In concentrated sulfuric acid to dark purple. Alkaline reduction leuco for red light blue; Acid reduction leuco for red light brown. Mainly used for cotton, vinylon, viscose fiber and fabric dyeing and printing, and can also be used to dark gray discharge printing.

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