Sodium Caprylate
AKA “SODIUM OCTANOATE, 1984-06-1, Sodium n-octanoate, Octanoic acid, sodium salt, sodium;octanoate, Caprylic acid sodium salt, Sodium octoate, Natrium octanoat, 9XTM81VK2B
Surfactant
Ingredient Facts
Sodium caprylate
AKA: SODIUM OCTANOATE, 1984-06-1, Sodium n-octanoate, Octanoic acid, Sodium salt, Sodium;octanoate, Caprylic acid sodium salt, Sodium octoate, Natrium octanoat, 9XTM81VK2B
Surfactant · Cleansing · EWG: 4
Synthetic
Cleanser
Emulsifier
Plant Oil
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...Sodium Caprylate...
Formula
C8H15NaO2
Mol. Weight
166.19
CAS #
1984-06-1
State
Other Solid; Liquid; Dry Powder
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.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Surfactant Cleansing
Surfactant Emulsifying
Improves Elasticity
Lifts away dirt and oil
Mixes oil and water
Traditional Use
A synthetic salt derived from caprylic acid, a medium-chain fatty acid naturally found in coconut oil. Developed as a preservative and antimicrobial agent in the mid-20th century for use in cosmetics and pharmaceuticals.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Effects of Sodium Salts of Fatty Acids and Their Derivatives on Skin Permeation of Cromolyn Sodium.
Akinbote OE, Verana G, Dandekar AA, Tijani AO, Mishra D et al.
AAPS PharmSciTech, 2023
Effects of Sodium Salts of Fatty Acids and Their Derivatives on Skin Permeation of Cromolyn Sodium.
Akinbote OE, Verana G, Dandekar AA, Tijani AO, Mishra D et al.
AAPS PharmSciTech, 2023
Final Report: Safety Assessment of Polyhydroxystearic Acid, Poly(3-Hydroxyoctanoic Acid, and Polylactic Acid as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Sodium Caprylate
European Commission
EU Cosmetic Ingredient Database (CosIng)
SODIUM SALT
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Sodium caprylate; a new and effective treatment for moniliasis of the skin and mucous membranes.
KEENEY EL
Bulletin of the Johns Hopkins Hospital, 1946
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR