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ACETALDEHYDE DIPROPYL ACETAL.

Optional CAS 105-82-8 / PERFUMING

A synthetic acetal compound that serves primarily as a perfuming agent, delivering fresh, green, chrysanthemum-like notes to cosmetic formulations. This ingredient functions as a stable carrier molecule that can release fragrant compounds under specific conditions while contributing its own distinct herbal-leafy scent profile.

perfuming fragrance enhancement

Science

Functions as a pro-fragrance molecule through acid-catalyzed hydrolysis that releases acetaldehyde and propanol, though in cosmetic applications it primarily provides direct olfactory benefits through its inherent green organoleptic properties without requiring chemical breakdown.


Research

Medium confidence
Effective range 0.0025–6%
Optimal

6%

Key findings

  1. 01 Established maximum recommended usage level in fragrance concentrates with characteristic fresh green chrysanthemum leafy herbal odor profile
  2. 02 Related acetaldehyde structure demonstrated safe usage parameters in fragrance applications with 20 ppm finished product limits

Transparency

Not commonly dusted

Primarily used as a specialized fragrance component in finished formulations rather than marketed as a standalone active ingredient, making dusting practices uncommon.


The Formula

Solubility
Both
Optimal pH 7 – 9
0 7 14

Stability

Demonstrates excellent stability under alkaline conditions but undergoes rapid degradation through acid-catalyzed hydrolysis below neutral pH, requiring careful formulation pH management.

Conflicts

  • Acidic environments (pH < 7)
  • Strong oxidizing agents
  • Low pH aqueous solutions

Safety

CIR Status
Not reviewed
Max tested
6%
Sensitization risk Moderate

Classified as skin and eye irritant under GHS/EU guidelines. While FDA restricts some synthetic flavoring acetals, this specific compound maintains FEMA GRAS status (FEMA #4688) for food applications.


Your Skin

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Moderate
Comedogenicity Unknown

Our Assessment

Optional

A specialized fragrance ingredient suitable for non-sensitive skin types when formulated within appropriate pH ranges and concentration limits.


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