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3-ETHYL-3,7-DIMETHYLOCT-6-ENAL.

Optional CAS 34687-43-9 / PERFUMING

A citrus-floral fragrance aldehyde that provides a fresh, lemony scent to skincare formulations. This aromatic compound requires careful concentration management due to its potential for skin sensitization in susceptible individuals.

perfuming

Science

Functions as an olfactory stimulant by binding to specific scent receptors to create fragrance perception. On skin contact, this aldehyde can potentially conjugate with skin proteins to form hapten complexes, which may trigger allergic responses in sensitized individuals.


Research

High confidence
Effective range 0.026–0.051%
Optimal

0.051%

Key findings

  1. 01 Maximum safe level for general leave-on applications to prevent sensitization reactions
  2. 02 Upper limit established for facial moisturizer category with acceptable risk profile

Transparency

Not commonly dusted

Not applicable for fragrance compounds as dusting refers to active ingredient concentrations


The Formula

Solubility
Oil
Optimal pH 5 – 7
0 7 14

Stability

Susceptible to air and light oxidation, potentially converting to more irritating carboxylic acid derivatives. Requires protective packaging and neutral to mildly acidic pH environment.

Conflicts

  • Strong oxidizing agents
  • Strong bases
  • Primary amines

Safety

CIR Status
Not reviewed
Max tested
0.051%
Sensitization risk Moderate

IFRA-regulated due to sensitization potential. CIR typically excludes fragrance-only ingredients from review as RIFM and IFRA provide safety oversight.


Your Skin

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

Our Assessment

Optional

A functional fragrance ingredient with established safety limits that requires careful formulation due to moderate sensitization risk.


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