Stearyl Alcohol
molecular structure · PubChem
AKA: 1-OCTADECANOL, Octadecan-1-ol, 112-92-5, 1-Hydroxyoctadecane, Octadecyl alcohol, N-Octadecanol, Stearol, N-Octadecyl alcohol, N-1-Octadecanol
Synthetic
Emollient
Emulsifier
Plant Oil
Fatty Acid
Clean
Octadecan-1-ol is a long-chain primary fatty alcohol consisting of a hydroxy function at C-1 of an unbranched saturated chain of 18 carbon atoms. It has a role as a plant metabolite, a human metabolite and an algal metabolite. It is an octadecanol and a long-chain primary fatty alcohol.
Solubility Soluble in alcohol, ether, benzene, acetone
Formula
C18H38O
Mol. Weight
270.50
CAS #
112-92-5
Form
Liquid
State
Dry Powder; Liquid; Other Solid; Pellets or Large Crystals, Liquid, Other Solid; NKRA; Pellets or Large Crystals, Other Solid
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emulsion Stabilising
Opacifying
Refatting
Traditional Use
A long-chain fatty alcohol developed synthetically in the 20th century, though similar compounds occur naturally in plant waxes and animal fats. Used in cosmetics as an emollient, thickener, and opacifying agent.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory0 listings
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
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Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR