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2-TRANS, 6-TRANS-NONADIENAL DIETHYL ACETAL.

Optional CAS 67674-37-7 / PERFUMING

A dual-purpose ingredient that serves as both a fragrance component and cooling agent through TRPM8 receptor modulation. This acetal derivative provides cucumber-like green notes while delivering sensory refreshment to skin. Its effectiveness spans from trace concentrations to 0.5%, making it versatile for various formulations.

perfuming fragrance cooling agent masking agent

Science

Functions by activating TRPM8 (Transient Receptor Potential Melastatin 8) receptors to create cooling sensations while simultaneously contributing green, cucumber-like fragrance notes. The acetal structure provides stability compared to its parent aldehyde while serving as an effective masking agent in topical formulations.


Research

Medium confidence
Effective range 0.0001–0.5%
Optimal

0.5%

Key findings

  1. 01 IFRA standards establish 0.5% maximum for fragrance concentrates with minimal sensitization risk
  2. 02 Patent literature demonstrates TRPM8 modulation activity at concentrations as low as 0.0001%

Transparency

Not commonly dusted

Primarily used as a fragrance and sensory modifier rather than active ingredient, making dusting practices less relevant


The Formula

Solubility
Oil
Optimal pH 5.5 – 9
0 7 14

Stability

Acetal structure becomes unstable below pH 5.0, potentially hydrolyzing to release parent aldehyde. Demonstrates excellent stability in alkaline conditions such as soap and shampoo formulations.

Conflicts

  • Strong oxidizing agents
  • Strong acids
  • Acidic cleaners

Safety

CIR Status
Not reviewed
Max tested
0.5%
Sensitization risk Low

IFRA-regulated with established safety limits. FDA GRAS status for food applications. Potential irritation only at undiluted concentrations.


Your Skin

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

Our Assessment

Optional

A well-tolerated multifunctional ingredient that enhances sensory experience through fragrance and cooling properties, though not essential for core skincare benefits.


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