murphyAmmonium Oleate
AKA: 544-60-5, Ammonium 9-octadecenoate, Caswell No. 046C, 9-Octadecenoic acid, Ammonium salt, Oleic acid ammonium salt
Synthetic
Cleanser
Emulsifier
Not Clean
OriginDerived from oleic acid (a fatty acid) and ammonia, both obtained through synthetic or natural sources. Synthesized through neutralization of oleic acid with aqueous ammonia solution to form the ammonium salt.
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)
Skin Types
●all-skin-types
Best For
Dryness
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.
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
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
CIR Safety Findings
Sensitizer in Testing
1 study / 1 sensitizing (CIR 777)
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2019
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR