Sodium Octoxynol-2 Ethane Sulfonate
molecular structure · PubChem
AKA: ENTSUFON SODIUM, 2917-94-4, Entsufon sodium [USAN], Triton X-200, Entsufon sodium (USAN), ENTSUFON SODIUM [II]
Synthetic
Cleanser
Emulsifier
Not Clean
Sodium 2-[2-[2-[4-(1,1,3,3-tetramethylbutyl)phenoxy]ethoxy]ethoxy]ethanesulphonate
Formula
C20H33NaO6S
Mol. Weight
424.50
CAS #
2917-94-4, 55837-16-6, 67923-87-9
Form
Liquid
State
Liquid
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.
Surfactant Cleansing
Surfactant Emulsifying
Anti-Inflammatory
Antimicrobial
Fights Acne
Removes dirt and impurities
Lifts away dirt and oil
Mixes oil and water
Traditional Use
A synthetic surfactant derived from octoxynol (a polyethoxylated alkylphenol). Created as a mild cleanser for sensitive skin formulations in the late 20th century.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR