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.

CAS NO.: 26266 58 0

MOLECULAR FORMULA: C60H108O8

MOLECULAR WEIGHT: 957.46

Technical Information of Sorbitan Trioleate

According to Q/GDRH 007-2020, other parameters are available upon request.

Parameters Unit Standard value

Acid value mg KoH/g ≤15.0

saponification value mg KoH/g 165~180

Hydroxyl value mg KoH/g 60~80

Moisture w/% ≤1.5

Advantages of Sorbitan Trioleate

Ethoxylated sorbitan trioleate is widely used in cosmetic products, personal care products, and industrial products

Can be used in cosmetic, pharmaceutical and industry

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