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Surfactant

C9-11 ALKETH-4 (FORMERLY C9-11 PARETH-4)

CAS 68439-46-3 (generic)
76

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

A short-chain ethoxylated fatty alcohol with low EO count — works as a co-emulsifier and solubilizer. CIR-cleared family, but lower-EO members can be slightly more defatting on skin than their highly-ethoxylated cousins.

Function

SURFACTANT - EMULSIFYING

Skin benefits

  • Co-emulsifier for oil-rich formulations
  • Improves spreadability of creams
  • Solubilizer for low-polarity ingredients

Known concerns

  • Trace 1,4-dioxane requires manufacturer stripping
  • Lower EO count means higher defatting potential
  • Not ideal for prolonged leave-on at high %

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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Same plant / compound family

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Stabilizer

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.