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Sorbitan trioleate, also known as STO, is synthesized by the esterification of sorbitan with oleic acid. It has a molecular formula of C60H108O8. At room temperature, it is in the form of a pale-yellow viscous liquid. It is a W/O emulsifier with an HLB value of 1.8. It is soluble in mineral and vegetable oil. Its functions include emulsification for cosmetics and personal care products; lubrication, dispersant, and softener for textiles; and anti-rusting for oil extraction.

Technical Information of Sorbitan Trioleate
According to Q/GDRH 007-2020, other parameters are available upon request.

ParametersUnitStandard value
Acid valuemg KOH/g≤15.0
Saponification valuemg KOH/g165～180
Hydroxyl valuemg KOH/g60～80
Moisturew/%≤1.5

Advantages of Sorbitan Trioleate
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Sorbitan trioleate is widely used in cosmetic products, personal care products, and industrial products
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Can be used in cosmetic, pharmaceutical and industry 
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