Oleyl Ethyl Phosphate

Oleyl Ethyl Phosphate 1
molecular structure · PubChem CID 71586940
AKA: Ethyl oleyl phosphate, Ethyl oleyl hydrogen orthophosphate, 10483-96-2, Oleyl ethyl phosphate [INCI], Phosphoric acid, Monoethyl mono-(9Z)-9-octadecenyl ester
Synthetic
Cleanser
Emulsifier
Not Clean
OriginDerived from oleyl alcohol and phosphoric acid, both petroleum-derived or synthesized organic compounds. Produced through phosphorylation of oleyl alcohol via esterification with phosphoric acid or phosphorus pentoxide.
Phosphoric acid, monoethyl mono-9-octadecenyl ester (Z)-
Formula
C20H39O5P
Mol. Weight
390.50
CAS #
10483-96-2
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Surfactant Cleansing
Surfactant Emulsifying
Moisturizing
Antimicrobial
Fights Acne
Lifts away dirt and oil
Mixes oil and water
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2019
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR