Sodium Oleth Sulfate

AKA: 27233-34-7, Disodium;1-octadec-9-enoxyoctadec-9-ene;sulfate
Synthetic
Cleanser
Emulsifier
Clean
OriginDerived from oleic acid and ethylene oxide, belonging to the synthetic surfactant chemical family. Synthesized through ethoxylation of oleyl alcohol followed by sulfation with sulfuric acid or SO3.
Poly(oxy-1,2-ethanediyl), .alpha.-sulfo-.omega.-(9-(Z)-octadecenyloxy)-, sodium salt (1-4 mol EO average molar ratio)
Formula
C36H70Na2O5S
Mol. Weight
661.00
CAS #
27233-34-7
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Foaming
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
Creates cleansing foam
Lifts away dirt and oil
Mixes oil and 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
2
CIR
Safe as used
Pregnancy
Caution
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR
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