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

BIS(METHACRYLOYLOXYETHYL) PHOSPHATE.

Valuable CAS 32435-46-4 / NAIL CONDITIONING

A high-performance phosphate-functionalized monomer primarily used in advanced dental and nail care for its exceptional bonding capabilities. It acts as a robust adhesion promoter that creates a chemical bridge between synthetic resins and biological substrates like keratin.

Summary

Adhesion promoter Nail conditioning agent Crosslinker MMP-2 inhibitor

Science

Mechanism of Action

This ingredient functions as a crosslinking agent and adhesion promoter. Its central phosphate group allows it to form strong chemical bonds with biological surfaces such as nail keratin or tooth hydroxyapatite. In polymer chemistry, it serves as a larger-molecule alternative to traditional acrylic acids, designed to provide superior adhesion while limiting deep tissue penetration and subsequent allergic sensitization.

Research

Clinical Evidence

High confidence
Effective range 0.6–4.3%
Optimal

4.3%

Key findings

  1. 01 Research published in the Journal of Dental Research (2021) indicated that a 0.6% concentration inhibited Matrix Metalloproteinase (MMP-2) activity by over 70%, which may help prevent collagen breakdown at the bonding interface.
  2. 02 A 2021 study from King's College London demonstrated that high-concentration formulations (up to 40%) provide superior resin infiltration and etching compared to standard 10-MDP systems in dental applications.

Transparency

Dusting Analysis

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

Because this is a specialized monomer for polymerization rather than a traditional skincare active, its presence in liquid skincare is rare. In nail products, concentrations below 0.1% would be considered 'label dusting' and ineffective for structural adhesion.

The Formula

Formulation

Solubility
Water
Optimal pH 3 – 4
0 7 14

Stability

The molecule is hydrolytically stable but extremely sensitive to thermal energy and UV radiation. To prevent premature polymerization, it must be stored at 2-8°C and away from light.

Synergies

  • Photoinitiators
  • UV/LED light

Conflicts

  • Oxidizing agents
  • Free radical initiators
  • Strong acids
  • Direct UV light exposure

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
4.3%
Sensitization risk High

Classified as a Category 1 skin sensitizer. It is safe once fully polymerized (cured), but direct contact with the liquid monomer can cause significant irritation or allergic contact dermatitis.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy High
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

An essential adhesion-enhancing monomer for nail and dental tech, though its high sensitization risk makes it unsuitable for leave-on topical skincare.

Related

Similar Ingredients

Finding similar ingredients…