Sodium dodecyl sulfate has excellent detergency, emulsification and foaming power. It can be used as detergent and textile auxiliaries. It is also used as anionic surface activator, toothpaste foaming agent, fire extinguishing agent, fire extinguisher foaming agent, emulsion polymerizing emulsifier, shampoo and other cosmetic products, wool detergent and silk wool fine fabric detergent, flotation agent for metal mineral processing.