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C6-10 PARETH-4 PHOSPHATE.

Valuable CAS 70248-14-5 / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

A versatile anionic emulsifier and surfactant that bridges the gap between effective cleansing and structural integrity in high-performance formulas. It is particularly valued in precision skincare for its ability to stabilize UV filters and prevent the crystallization of active ingredients, ensuring uniform delivery across the skin surface.

Surfactant Emulsifying agent Stabilizer

Science

As an amphiphilic alkyl phosphate, it lowers interfacial tension by anchoring its C6-10 lipid chains into oil phases while its polar phosphate head interacts with water. This creates a stable oil-in-water (O/W) matrix that enhances the water resistance of sunscreens and facilitates the gentle solubilization of debris during the cleansing process.


Research

High confidence
Effective range 0.5–50%
Optimal

5%

Key findings

  1. 01 Demonstrated efficacy in preventing the recrystallization of Allantoin, maintaining its soothing bio-availability in complex emulsions.
  2. 02 Proven to enhance the water-resistant film-forming properties of physical UV filters like Titanium Dioxide.
  3. 03 Shown to provide synergistic soil removal in cleansing blends without elevating skin irritation when paired with mild surfactants.

Transparency

Not commonly dusted
Min. effective
0.5%
Red flag below
0.2%

Because this ingredient is primarily functional rather than a 'hero' marketing active, it is rarely 'dusted.' However, at levels below 0.5%, it may lack the structural power to provide its signature stability and water-resistance benefits.


The Formula

Solubility
Both
Optimal pH 4 – 8
0 7 14

Stability

Highly resistant to thermal degradation and exceptionally stable in alkaline environments. It is water-dispersible and compatible with various esters and paraffin oils.

Synergies

  • Titanium Dioxide
  • Allantoin
  • Non-ionic surfactants

Conflicts

  • Cationic surfactants
  • Polyquaterniums
  • Highly acidic environments (< pH 4.0)

Safety

CIR Status
Safe as used
Max tested
8.3%
Pregnancy
Safe
Sensitization risk Low

The safety profile is based on its similarity to Potassium Cetyl Phosphate; it is considered non-irritating when formulated correctly within the 4.0-8.0 pH range.


Your Skin

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

Our Assessment

Valuable

An essential architectural component for stabilizing active-heavy emulsions and improving the wear-time of SPF products.


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