dichlorodibenzo[def,mno]chrysene-6,12-dione

Preparation

Anthanthrone for chlorination.

Synthesis

4,10-Dichloroanthanthrone, Indanthren Brilliant Orange GK, is prepared from 1,1'-binaphthyl-8,8'- dicarboxylic acid in sulfuric acid at 50 ?C, followed by chlorination in the presence of FeSO4 , or from anthanthrone by sparging with chlorine in the presence of iodine in sulfuric acid or organic solvents .

Properties and Applications

bright orange. Orange powder. Insoluble in water, slightly soluble in 1, 2, 3, 4-Tetrahydronaphthalene and Xylene. The strong sulfuric acid for green. Alkaline reduction for the red light purple leuco ; Acid reduction to orange color body hidden. Used for the cotton fiber dyeing as bright orange, the affinity of cotton is good, to dead cotton covering power is also very good. This product can be used for direct printing of cotton fabric dyeing and printing, the discharge printing.

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