Tween-61, Emulsifier T-61


Tween-61 is a yellow waxy solid. It is non-toxic and odorless. Tween-61 is soluble in water, sulphuric acid, and diluted alkalis. HLB value is 9.6. Tween-61, also known as polyoxyethylene (4) sorbitan monostearate consists of sorbitol, ethylene oxide, and stearic acid.  At room temperature, it is in the form of pale-yellow to amber-colored oily liquid or paste. It is soluble in ethanol, ethyl acetate, and toluene. It can also be dispersed in water.

Molecular Formula:


Structure Formula:

tween-61 structure formula


AppearanceYellow waxy solid
Acid value2mgKOH/g Max.
Saponification value90-110mgKOH/g
Hydroxyl value165-195mgKOH/g
Water3.0% Max.


Twee-61 is used as an emulsifier, wetting agent for medicine, food, textiles, cosmetics, and agricultural industries.

Twee-61 are often used as emulsifier in some pharmaceuticals and food preparation. They are also used in cosmetics to solubilize essential oils into water-based product and in medical products, such as cream treatments for acne, and topical treatments for mouth sores.

Packing and Storage:

200kg wide-mouthed iron drum, 100kg wide-mouthed plastic drum.

metal drum 200l plastic drum

Handle with care, Tween-61 is stored in a cool, dry, and draughty place. Shelf life is 2 years. Then, Tween-61 can still be used if qualified after re-check.


Emulsifier T-61


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