Tween-40, Emulsifier T-40, Polyoxyethylene Sorbitan Monopalmitate


Tween-40 is an amber oily liquid. Relative density: 1.05-1.10. HLB value is 15.6. Tween 40 is soluble in water, diluted acid, diluted alkalis, and most organic solvents, insoluble in vegetable oil.

CAS No.:


Molecular Formula:


Structure Formula:

tween-40 structure formula


Item Index
Appearance Amber oily liquid
Acid value 2mgKOH/g Max.
Saponification value 40-55mgKOH/g
Hydroxyl value 85-100mgKOH/g
Water 3.0% Max.


Tween-40 is used as an emulsifier, solubilizer, stabilizer, diffusant and fiber lubricant, etc.

Packing and Storage:

In 200kg iron drum/plastic drum. Handle with care; Tween-40 should be stored in a cool, dry, and draughty place. Shelf life is 2 years. Then, Tween-40 can still be used if qualified after re-check.


Emulsifier T-40, Polyoxyethylene sorbitan monopalmitate.


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