Anionic surfactants mainly appear as translucent viscous liquids, white needles, white powders and other forms. Anionic surfactants dissociate in water to generate hydrophobic anions. It has good decontamination, foaming, dispersion, emulsification, wetting and other properties. It is widely used as detergent, foaming agent, wetting agent, emulsifier and dispersant. The output occupies the first place in surfactants. Can not be used together with cationic surfactants, it will cause precipitation in aqueous solution and lose its effectiveness.