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BUTYL ACETATE.

Valuable CAS 123-86-4 / FRAGRANCE, SOLVENT

A rapid-evaporating ester solvent that facilitates smooth product application and quick drying in cosmetic formulations. This highly volatile compound serves dual functions as both a dissolution agent for film-forming polymers and a fragrance carrier that delivers immediate scent impact.

solvent fragrance carrier

Science

Functions as a high-volatility solvent system that dissolves film-forming compounds like nitrocellulose and resins while rapidly evaporating to leave behind desired product film or finish on skin surface.


Research

High confidence
Effective range 1–40%
Optimal

5%

Key findings

  1. 01 Human maximization testing with 25 subjects demonstrated zero sensitization reactions at 2760 μg/cm² dosage
  2. 02 48-hour covered patch testing showed no irritation response in human subjects

Transparency

Not commonly dusted

Primarily utilized as functional solvent rather than active ingredient, making dusting less relevant for this compound


The Formula

Solubility
Both
Optimal pH 5 – 7
0 7 14

Stability

Demonstrates excellent stability in neutral conditions with 3.1-year half-life at pH 7, but rapidly degrades at alkaline pH (11-day half-life at pH 9) through hydrolysis to n-butanol and acetic acid

Synergies

  • Nitrocellulose film formers
  • Fragrance top notes
  • Quick-dry polymers

Conflicts

  • Strong oxidizing agents
  • Strong alkalis
  • Rubber components
  • PVC containers
  • Polystyrene packaging

Safety

CIR Status
Safe as used
Max tested
40%
Pregnancy
Safe
Sensitization risk Low

CIR Expert Panel reconfirmed safety status in 2006 with maximum 40% concentration approval, though extended exposure may cause temporary skin defatting effects


Your Skin

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

Our Assessment

Valuable

Well-established solvent with excellent safety profile and proven utility in specialized applications requiring rapid evaporation and film formation.


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