Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

C9-11 PARETH-2.

Valuable CAS 68439-46-3 / SURFACTANT - CLEANSING

A high-performance non-ionic surfactant and lipophilic emulsifier designed to bridge the gap between oil and water phases. Its specific molecular architecture makes it an ideal wetting agent and fragrance solubilizer for sophisticated, multi-phase cosmetic architectures.

Summary

Surfactant Emulsifying agent Solubilizer Cleansing agent Wetting agent

Science

Mechanism of Action

This ingredient functions by reducing the interfacial tension between incompatible liquids. With a low degree of ethoxylation (2 moles), it exhibits a low Hydrophilic-Lipophilic Balance (HLB), allowing it to act as a powerful lipophilic co-emulsifier that enhances the spreadability and structural integrity of oil-rich formulations.

Research

Clinical Evidence

High confidence
Effective range 2–5%
Optimal

5%

Key findings

  1. 01 Human Repeat Insult Patch Tests (HRIPT) conducted on finished cosmetic formulations containing 2.0% to 5.0% concentrations demonstrated zero evidence of skin irritation or sensitization.
  2. 02 Safety assessments by the CIR (2012) indicate that while undiluted (100%) alkyl PEG ethers may cause irritation, they remain non-sensitizing in maximization trials.

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
1%

As a functional surfactant and solubilizer, C9-11 Pareth-2 is rarely used for 'label claim' marketing. Its presence is typically dictated by the structural requirements of the formula rather than consumer-facing trends.

The Formula

Formulation

Solubility
Both
Optimal pH 3 – 11.5
0 7 14

Stability

Exhibits exceptional stability across a broad pH spectrum and maintains performance in the presence of hard water and high electrolyte concentrations.

Synergies

  • High HLB surfactants
  • Essential oils
  • Lipid-based emollients

Conflicts

  • Strong oxidizers

Safety

Safety Profile

CIR Status
Safe as used
Pregnancy
Safe
Sensitization risk Low

Safe for topical use when formulated to be non-irritating. Quality control protocols during manufacturing monitor for potential 1,4-dioxane byproducts to ensure purity.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A robust and skin-friendly emulsifier that provides essential structural stability and efficient cleansing properties across all skin types.

Related

Similar Ingredients

Finding similar ingredients…