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ACRYLATES/BEHENETH-25 METHACRYLATE/STEARETH-30 METHACRYLATE COPOLYMER.

Valuable CAS 888492-33-9 / FILM FORMING

This copolymer functions as an efficient rheology modifier and associative thickener in aqueous solutions. It enhances product texture, providing softness and smoothness while stabilizing emulsions.

viscosity controlling emulsion stabilising film forming

Science

It forms a network structure through hydrophobic interactions between its specialized chains, enabling high-efficiency thickening. This mechanism also contributes to emulsion stabilization and an improved sensory feel.


Research

High confidence
Effective range 0.3–1.7%
Optimal

N/A

Key findings

  1. 01 Clinical use concentrations (0.3-1.7%) are considered safe and non-irritating in human leave-on products.
  2. 02 Related Acrylates Copolymers (30% solids) demonstrated non-irritant and non-sensitizer properties in human subjects.

Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH 6 – 8
0 7 14

Stability

Typically supplied as a low-viscosity emulsion, it requires neutralization with a base to activate thickening, reaching maximum viscosity and clarity between pH 6-8.

Conflicts

  • High electrolyte/salt concentrations (can decrease viscosity)
  • Strongly acidic environments (causes precipitation/loss of viscosity)
  • Cationic surfactants (may cause complexation and precipitation)

Safety

CIR Status
Safe as used
Max tested
1.7%
Sensitization risk Low

The CIR Expert Panel deems it safe when formulated to be non-irritating. Residual monomers must adhere to GMP-stipulated minimums.


Your Skin

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

Our Assessment

Valuable

This associative polymer is valuable for its ability to enhance texture and stabilize emulsions across all skin types, with a low risk of irritation.


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