Sodium Oleate
AKA “143-19-1, Oleic acid sodium salt, Osteum, Eunatrol, Olate flakes, Sodium 9-octadecenoate, (Z)-, 9-Octadecenoic acid (Z)-, sodium salt, CCRIS 1964
Surfactant
Ingredient Facts
Sodium oleate
AKA: 143-19-1, Oleic acid sodium salt, Osteum, Eunatrol, Olate flakes, Sodium 9-octadecenoate, (Z)-, 9-Octadecenoic acid (Z)-, Sodium salt, CCRIS 1964
Surfactant · Cleansing · EWG: 1
Synthetic
Cleanser
Emulsifier
Plant Oil
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...Sodium Oleate...
Solubility IN WATER: 10 G/100 CC @ 12 °C; SLIGHTLY SOL IN ETHER
Formula
C18H33NaO2
Mol. Weight
304.40
CAS #
143-19-1, 16558-02-4
State
Oleic acid, [sodium salt] is a light tan solid with a slight tallow-like odor. Sinks and mixes slowly with water. (USCG, 1999)
See origin →
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.
Viscosity Controlling
Removes Impurities
Cleansing Surfactant
Emulsifier
Controls Viscosity
Antioxidant Protection
Locks In Moisture
Traditional Use
Derived from oleic acid found in olive oil and other plant oils used for millennia in soap-making. Traditional olive oil soaps date back to ancient Mesopotamia and Egypt, where they were valued for gentle cleansing.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR