Yellow powder form. Soluble in water, was green light yellow, plus hydrochloride unchanged, caustic soda plus a little light color; Canada carved white block? Colorless, but in the air chloride solution also shows that red light purple. Soluble in ethylene glycol - ether, slightly soluble in ethanol and acetone, Insoluble in other organic solvents. Dye in sulfuric acid for the green light yellow, diluted without precipitation, in the concentrated nitric acid for the red light The brightly-colored pollutants, good fastness, dyeing, and better uptake. Dyeing case copper, iron ion and dark red color slightly Good discharge Functions and features: Wool, silk fabric dyeing and printing, nylon and blended fabric dyeing.