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C9-11 PARETH-3.

Valuable CAS 68439-46-3 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

A synthetic non-ionic surfactant and emulsifying agent used to bridge the gap between oil and water phases in cosmetic formulas. It excels at stabilizing complex textures and assisting in the gentle removal of surface impurities without the aggressive foaming associated with traditional sulfates.

Emulsifying Surfactant Cleansing Wetting Agent

Science

It functions by lowering the interfacial tension between different liquid phases. Due to its specific hydrophilic-lipophilic balance, it acts as a wetting agent that allows water to spread more easily, effectively trapping oils and dirt in micellar structures that can be rinsed away while maintaining the integrity of the skin's lipid barrier.


Research

High confidence
Effective range ≥1%
Optimal

N/A

Key findings

  1. 01 A 2012 CIR safety assessment confirmed that a 1% induction concentration was a non-sensitizer in guinea pig maximization tests.
  2. 02 OECD 404/405 testing on 100% undiluted material showed it is non-irritating to the skin, though it remains a serious eye irritant in concentrated forms.

Transparency

Not commonly dusted

As a functional surfactant and emulsifier rather than a 'hero' active, this ingredient is used at concentrations dictated by formulation stability requirements rather than for marketing claims.


The Formula

Solubility
Both
Optimal pH 3 – 11
0 7 14

Stability

Highly resilient across a broad pH spectrum and remains stable in the presence of electrolytes. Its non-ionic character ensures broad compatibility with anionic and cationic systems.

Synergies

  • Anionic surfactants
  • Cationic conditioning agents
  • Lipid-rich emollients

Conflicts

  • Strong oxidizing agents

Safety

CIR Status
Safe as used
Sensitization risk Low

Safety is contingent on the manufacturer utilizing vacuum stripping to ensure the byproduct 1,4-dioxane remains below the recommended threshold of 1 ppm.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Valuable

A highly stable and compatible functional ingredient that provides essential emulsification and low-irritancy cleansing for all skin types.


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References