Tween-20 is used as solvent, diffusant, stabilizer, lubricant and antistatic agent
Tween-40 is used as emulsifier in food, cosmetics, an antistatic agent and lubricant in textile industry, often with Span when functions as emulsifier.
Tween-60 is used as emulsifier in food, medicine, plastic and cosmetics, as softener for fabric processing.
Tween-80: Used as emulsifier, foaming agent, lubricant, solubilizing agent, antistatic agent, washing agent, dispersing agent, degreasing agent and chemical intermediate in the industry.