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Moumoujus

BUTETH-2 ACETATE.

Optional CAS 124-17-4 / FRAGRANCE, PERFUMING, SOLVENT, VISCOSITY CONTROLLING

A glycol ether compound that serves as a multifunctional solvent and coalescing agent in cosmetic formulations. While effective for film formation and fragrance delivery, its potential for serious eye irritation requires careful formulation consideration and regulatory compliance.

Summary

solvent perfuming viscosity controlling film forming agent

Science

Mechanism of Action

Acts as a high-boiling solvent that reduces minimum film-forming temperature, enabling polymers and resins to create smooth, continuous films while simultaneously controlling viscosity and carrying fragrance molecules through the formulation matrix.

Research

Clinical Evidence

High confidence
Effective range 0.1–1%
Optimal

1%

Key findings

  1. 01 Maximum safe concentration threshold established by EU regulatory framework due to eye irritation potential

Transparency

Dusting Analysis

Not commonly dusted
Red flag below
1%

EU regulations mandate notification for concentrations above 1.0% due to safety concerns, making higher percentages regulatory red flags rather than formulation dusting.

The Formula

Formulation

Solubility
Both
Optimal pH 3 – 4
0 7 14

Stability

Exhibits light sensitivity and forms explosive peroxides with prolonged air/light exposure. Hydrolysis rate accelerates significantly in extreme pH environments outside optimal range.

Synergies

  • VA/acrylates copolymers

Conflicts

  • Strong oxidizing agents
  • Strong acids
  • Strong bases
  • Alkali metals

Safety

Safety Profile

CIR Status
Safe as used
Max tested
1%
Sensitization risk Low

CIR Expert Panel confirms safety within established usage parameters. ECHA classifies as Category 2 eye irritant. EU CPNP notification required above 1.0% concentration.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Optional

A technically competent but non-essential ingredient with significant regulatory limitations that restrict its versatility in premium skincare formulations.

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