C.I. Pigment Red 4 mainly used in printing ink, paint, watercolor, paint and inkpad color, also can be used for rubber, natural raw lacquer, cosmetics, paint and coating printing color. Yellow red powder, bright color. Insoluble in water, slightly soluble in ethanol, acetone and benzene. In concentrated sulfuric acid to blue light magenta, dilution after yellow red precipitation; In concentrated nitric acid for brilliant scarlet; In a dilute sodium hydroxide solution does not change color; In the ethanol – potassium hydroxide solution for purple. Liquidity and cover resistance, good heat resistance is poor. References:

纯度：≥98%

CAS：2814-77-9