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Surfactant

C30-50 ALKETH-40 (FORMERLY C30-50 PARETH-40)

CAS 246538-85-2 (generic) Updated
80

Safety score · 0–100

Good

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

About

A long-chain (C30-50) fatty-alcohol ethoxylate with 40 EO, used as a non-ionic solubilizer and emulsifier. The long chain plus high EO gives a mild, low-irritation profile suitable for leave-on cosmetics.

Function

SURFACTANT - CLEANSINGSURFACTANT - SOLUBILIZING

Skin benefits

  • High-EO solubilizer for oils and fragrances
  • Mild on skin in rinse-off and leave-on use
  • Stable, non-ionic emulsifier across broad pH

Known concerns

  • Residual 1,4-dioxane from ethoxylation requires controlled grade
  • Very-long-chain feedstock means slower biodegradation
  • No direct skin benefit beyond formulation

References

EU

EU CosIng database

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

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