murphyStearyl Caprylate
AKA: Octadecyl octanoate, 18312-31-7, Octanoic acid, Octadecyl ester, Stearyl octanoate, PELEMOL SNO
Plant-Derived
Emollient
Skin Conditioner
Clean
OriginDerived from coconut or palm kernel oils, which contain caprylic and stearic fatty acids. Synthesized through esterification of stearyl alcohol with caprylic acid.
The CIR Expert Panel concluded that the alkyl esters, listed subsequently, are safe in the present practices of use and concentration described in this safety assessment when formulated to be non-irritating.
Formula
C26H52O2
Mol. Weight
396.70
CAS #
18312-31-7
Form
Liquid
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Locks In Moisture
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.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer (CIR report on the ingredient group)
CIR report statement covering this group of ingredients / not tested individually (CIR 564)
Concentration Guide
Leave-on0.3–5%
Rinse-offNot reported
0%50%100%
CIR reported use · 2012 survey
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR