Sorbitan Trioleate
molecular structure · PubChem
AKA: Anhydrosorbitol trioleate, Span85, Tri-9-octadecenoate, Span-85, Glycomul TO, Liposorb TO, Protachem STO, Arlacel 85, Tri-(9Z)-9-octadecenoate
Synthetic
Cleanser
Emulsifier
Plant Oil
Clean
Sorbitan trioleate is a small molecule drug. Sorbitan trioleate has a monoisotopic molecular weight of 956.8 Da.
Effective at 5.0%
Formula
C60H108O8
Mol. Weight
957.50
CAS #
26266-58-0
Form
Liquid
State
Liquid
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Surfactant Emulsifying
Improves Elasticity
Moisturizing
Boosts Collagen
Mixes oil and water
Traditional Use
A synthetic emulsifier made from sorbitol and oleic acid, developed in the mid-20th century. Used in cosmetics to create stable emulsions and improve product texture.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
1e-05%
10.0%
0%100%
Reported use
CIR reported use: 0.24-9.1 | 0.00001-5 | 0.1-10
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed4 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR