It is mainly used for dyeing and printing of cotton, viscose, hemp and other fiber fabrics, dyeing of silk and wool, dyeing of paper and leather, and manufacturing lake pigments. In addition to dyeing bright red and bright red (yellow light light light red) separately, it is also used for color matching with yellow, orange, red, brown and other dyes. After dyeing, finish with urea formaldehyde resin or treat with color fixing agent y, and the color light base benzene remains unchanged. If treated with color fixing agent M, the color light will obviously turn blue.