Sodium Octoxynol-2 Ethane Sulfonate

AKA: ENTSUFON SODIUM, 2917-94-4, Entsufon sodium [USAN], Triton X-200, Entsufon sodium (USAN), ENTSUFON SODIUM [II]
Synthetic
Cleanser
Emulsifier
Not Clean
OriginDerived from fatty alcohols and ethylene oxide, belonging to the nonionic surfactant chemical family. Synthesized through ethoxylation of octylphenol followed by sulfonation with ethane sulfonic acid.
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
Skin Types
●all-skin-types
Best For
General
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.
Surfactant Cleansing
Surfactant Emulsifying
Anti-Inflammatory
Antimicrobial
Fights Acne
Removes dirt and impurities
Lifts away dirt and oil
Mixes oil and water
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
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