Skip to content

Stabilizer

C9-11 ALKETH-40 (FORMERLY C9-11 PARETH-40)

CAS 169107-21-5 (generic)
87

Safety score · 0–100

Good

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

A C9-11 alcohol with a high 40 EO units — even with a short alkyl chain, very heavy ethoxylation makes this an unusually mild, hydrophilic emulsion stabiliser with a clean profile.

Function

EMULSION STABILISING

Skin benefits

  • Mild emulsion stabilisation
  • Strong oil solubilisation
  • Low irritation
  • Compatible with mild systems

Known concerns

  • Trace dioxane caveat
  • No significant concerns at cosmetic concentrations

References

EU

EU CosIng database

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

Related stabilizers

87
HYDROLYZED CORN STARCH HYDROXYETHYL ETHER
Stabilizer
 86
SODIUM HYDROXYPROPYL CYCLODEXTRIN OCTENYLSUCCINATE
Stabilizer
 88
SODIUM TREHALOSE OCTENYLSUCCINATE
Stabilizer
 85
ALUMINUM DISTEARATE
Stabilizer
 85
C12-14 ALKETH-11 (FORMERLY C12-14 PARETH-11)
Stabilizer
 85
PERFLUOROCYCLOHEXYLMETHANOL
Stabilizer
 85
PERFLUOROHEPTANE
Stabilizer
 85
SODIUM ACRYLATES/VINYL ISODECANOATE CROSSPOLYMER
Stabilizer

Check your shelf

Find C9-11 ALKETH-40 (FORMERLY C9-11 PARETH-40) in your products.

Scan any cosmetic product with LuxSense to see if it contains C9-11 ALKETH-40 (FORMERLY C9-11 PARETH-40) and get a full ingredient breakdown with safety scores.

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.