Stearyl Caprylate
AKA “Octadecyl octanoate, 18312-31-7, Octanoic acid, octadecyl ester, Stearyl octanoate, EINECS 242-200-2, 06TS6O9194, PELEMOL SNO, DTXSID5051816, RefChem:889168
Emollient
Ingredient Facts
Stearyl caprylate
AKA: Octadecyl octanoate, 18312-31-7, Octanoic acid, Octadecyl ester, Stearyl octanoate, EINECS 242-200-2, 06TS6O9194, PELEMOL SNO, DTXSID5051816, RefChem:889168
Emollient · Emollient · EWG: 1
Plant-Derived
Emollient
Skin Conditioner
Plant Oil
Clean
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
See origin →
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
Traditional Use
Synthesized as an ester combining stearyl alcohol and caprylic acid. Developed to provide emollient and conditioning benefits in skincare and personal care products.
Skin Types
all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR