Ethyl Ricinoleate

Ethyl Ricinoleate molecular structure
molecular structure · PubChem
AKA: 55066-53-0, Ricinoleic acid, Ethyl ester, 9-Octadecenoic acid, RICINOLEATE D'ETHYLE, (+)-ETHYL RICINOLEATE
Synthetic
Fragrance
Skin Conditioner
Plant Oil
Not Clean
12-Hydroxy-9-Octadecenoic Acid, Ethyl Ester; Ethyl (R)-12-hydroxyoleate
Formula
C20H38O3
Mol. Weight
326.50
CAS #
55066-53-0
Form
Liquid
Functions
Perfuming
Added for scent. Can be natural or synthetic. Common irritant and allergen — one of the top reasons people react to products.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks in moisture
Traditional Use
A synthetic ester derived from ricinoleic acid found in castor oil. Created in the 20th century to provide the conditioning benefits of castor oil in a more stable, lighter-weight form.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR