murphySorbitan Sesquioleate
AKA: Arlacel C, Sorgen 30, Span 83, Protachem SOC, Glycomul SOC, Liposorb SQ0, Hodag SSO, Montane 83, Emasol 41S
Synthetic
Emollient
Skin Conditioner
Synthetic
Clean
OriginTypically derived from coconut, palm kernel, or soybean oils as the oleic acid source. Synthesized through esterification of sorbitol with oleic acid, then partially dehydrated to form sesquioleate.
Sorbitan Sesquioleate is a cosmetic ingredient. Also known as Arlacel C. Rated low hazard by EWG.
Formula
C66H130O18
Mol. Weight
1211.70
CAS #
8007-43-0
Form
Liquid
State
Other Solid; Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emulsifier
Mixes Oil & Water
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory0 listings
🛡️Safety-assessed4 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
8 studies / 8 not sensitizing / plus 4 case reports (CIR 196 and 682)
Mixed Eye Irritation Results
4 studies / 1 irritating / 3 not irritating / reactions minimal (CIR 196 and 682)
Mixed Skin Irritation Results
12 studies / 5 irritating / 3 mixed / 4 not irritating / reactions minimal to severe (CIR 196 and 682)
Concentration Guide
Leave-on0.005–8%
Rinse-off0.35%
0%50%100%
CIR reported use · 2014 survey
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR