Tween 20 is an amber oily liquid; It has a special odor and a faint bitter taste. Relative density 1.01, boiling point>100 ℃, flash point 321 ℃, refractive index 1.472, viscosity (25 ℃) 0.25-0.40 Pa · s. The molecule contains more hydrophilic groups, which can be miscible with water, ethanol, methanol and ethyl acetate. It is insoluble in liquid paraffin, non-volatile oil and light petroleum. One part of the product can be soluble in 130 parts of Cottonseed oil and 200 parts of toluene, with 5% aqueous solution pH 5-7. Dissolve in corn oil, dioxane, cellulose, carbon tetrachloride, methanol, ethanol, aniline at high concentrations and dissolve in mineral oil, cottonseed oil, ethylene glycol, ethyl acetate, and ethylene glycol; Turbid in toluene and Petroleum ether; Disperse in water; HLB16.7.

Tween 20 is an oil in water (O/W) emulsifier, which can be used as a solubilizer, dispersant, stabilizer, Antistatic agent, lubricant, such as mineral oil emulsifier, cosmetics emulsifier, pharmaceutical emulsifier, dye cosolvent, foam plastic stabilizer, photographic lotion auxiliary, shampoo viscosity regulator, antistatic silk sound synergist in spinning oil, fiber processing auxiliary, etc. Especially suitable for use with Span-20.