Ammonium Oleate
molecular structure · PubChem
AKA: 544-60-5, Ammonium 9-octadecenoate, Caswell No. 046C, 9-Octadecenoic acid, Ammonium salt, Oleic acid ammonium salt
Synthetic
Cleanser
Emulsifier
Not Clean
The CIR Expert Panel concluded that the following ingredients are safe in the present practices of use andconcentration described in the safety assessment when formulated to be non-irritating and non-sensitizing, which may be basedon a QRA...Ammonium Oleate...
Formula
C18H37NO2
Mol. Weight
299.50
CAS #
544-60-5
Form
Liquid
State
Ammonium oleate is a yellow-brown paste with a weak odor of ammonia. Sinks and mixes with water. (USCG, 1999)
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
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.
Removes Impurities
Cleansing Surfactant
Emulsifier
Reduces Inflammation
Locks In Moisture
Mixes Oil & Water
Traditional Use
Oleic acid from olive and other oils has been used for centuries in traditional skincare; the ammonium salt form was developed in the 20th century as an emulsifier and cleansing agent. Used in modern products as a bridge between traditional oil use and contemporary formulation chemistry.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR