N,N'-(9,10-dihydro-4,8-dihydroxy-9,10-dioxoanthracene-1,5-diyl)bis[4-methoxybenzamide]

Chemical Properties

Dark blue-black powder. Insoluble in water, soluble in pyridine, tetrahydronaphthalene, xylene. In sulfuric acid, boric acid mixture is bright blue-green, then turn blue; in concentrated sulfuric acid is brownish red, then turn green, then turn yellowish green, diluted to produce purple precipitate; in the insurance powder alkaline solution is reddish brown; in the acidic solution is dark reddish purple.

Preparation

1,5-Diamino-4,8-dihydroxyanthracene-9,10-dione and 4-Methoxybenzoyl chloridecondensation. NOTE: The product may contain a benzoyl group and a methoxy benzoyl.

Properties and Applications

purple. Blue gray powder. Insoluble in water, soluble in 1, 2, 3, 4 – Tetrahydronaphthalene, Xylene and Pyridine . In concentrated sulfuric acid for brown light red, and then into a green, green to yellow, purple precipitation after dilution in sulfuric acid and boric acid solution for brilliant blue green, to blue. Alkaline reduction leuco for red brown; Acid reduction leuco for dark red light purple. Used for dyeing cotton fabric is purple, to cotton affinity and levelness were good. Also applies to viscose, silk and wool dyeing.

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