Brown. Deep red powder. Insoluble in water and Etanol, slightly soluble in Xylene for Bordeaux red solution. In concentrated sulfuric acid for dark wine red, dilution to red light brown, flocks. Alkaline reduction leuco body for the color red; Acid reduction leuco for yellow-brown. It is a light brittle dye. To cotton, affinity is poorer, less used in cotton dyeing. Suitable for direct printing, resist printing, and aniline black color resist, also suitable for the shallow, color of the discharge. Suitable for cotton knits dyeing, more suitable for silk printing. But printing and dyeing fabric in sunlight exposure easily appear fiber brittle damage phenomenon. It can be used for viscose and wool dyeing, can also be processed into organic pigment.