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Moumoujus

C12-16 PARETH-6 PHOSPHATE.

Valuable CAS 246159-55-7 / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

A sophisticated anionic emulsifier and surfactant that bridges the gap between oil and water phases to ensure formula homogeneity. Beyond its structural role, it serves as a specialized performance vehicle that enhances the deposition and persistence of active ingredients on the skin surface.

Summary

Surfactant Emulsifying agent Cleansing agent SPF Booster

Science

Mechanism of Action

This ingredient functions as an anionic polyoxyethylene alkyl ether phosphate, reducing surface tension to facilitate the creation of stable oil-in-water (O/W) micelles. Its unique phosphate group provides high skin affinity, allowing it to act as a delivery anchor that improves the distribution and water resistance of UV filters and sensory agents.

Research

Clinical Evidence

High confidence
Effective range 0.1–5%
Optimal

3%

Key findings

  1. 01 Demonstrated significant SPF amplification and enhanced water resistance in sunscreen systems at a 3% inclusion rate.
  2. 02 Shown to boost the solubility and sensory longevity of cooling TRPM8 modulators and fragrance components at concentrations between 0.1-5%.

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
0.5%
Red flag below
0.1%

Because it functions as an emulsifier and performance booster, it is typically used at functional levels (above 0.5%) to achieve formula stability. Formulations using it below 0.1% for claims rather than structural integrity would be considered 'dusting'.

The Formula

Formulation

Solubility
Both
Optimal pH 6.5 – 7.5
0 7 14

Stability

Thermally robust up to 80°C. Requires precise neutralization to a pH above 6.5 to successfully form the anionic salt necessary for optimal emulsifying properties.

Synergies

  • UV Filters
  • TRPM8 cooling agents
  • Antimicrobial actives
  • Fragrance compounds

Conflicts

  • Cationic surfactants
  • High electrolyte concentrations
  • Highly acidic environments (pH < 4.0)

Safety

Safety Profile

CIR Status
Safe as used
Max tested
10%
Pregnancy
Safe
Sensitization risk Low

Recognized for its superior skin tolerance compared to traditional sulfates, such as SLS, provided the final formula is pH-balanced to avoid irritation.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A high-performance multifunctional emulsifier that notably improves the efficacy and durability of UV protection and active delivery.

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