It is mainly used as dispersant in disperse dyes, vat dyes, reactive dyes, acid dyes and leather dyes, with excellent grinding efficiency, solubilization and dispersion; It can also be used in textile printing and dyeing, wettable pesticide as dispersant, paper dispersant, electroplating additive, water-soluble coating, pigment dispersant, water treatment agent, carbon black dispersant, etc. The dispersant NNO is mainly used in industry for pad dyeing with vat dyes, dyeing with leuco acid, dyeing with disperse and soluble vat dyes, etc. It can also be used in the dyeing of silk / wool interwoven fabrics, so that there is no coloring on the silk.