anthra[2,1,9-mna]benz[6,7]indazolo[2,3,4-fgh]acridine-5,10-dione

Preparation

3-Bromo-6aH-benzo[de]anthracen-7(8H)-one and 3H-naphtho[2,3-f]indazol-3-one?condensation, the product with Etanol/Potassium hydroxide melt.

Properties and Applications

red light blue to red light navy blue. Dark blue powder. In concentrated sulfuric acid to blue light red. Alkaline reduction leuco for green light blue; Acid reduction leuco for purple. To cotton directness high, good levelness. Used for cotton fiber dyeing for red light blue to red light navy blue, also can be used for cotton fabric direct printing, resist printing and discharge printing, but also can be used for viscose and silk dyeing.