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8-ETHYL-1,5-DIMETHYLBICYCLO-8-OCTANOL.

Optional CAS 84681-92-5 / PERFUMING

A specialized fragrance molecule that delivers distinctive earthy, forest-floor aromatic notes to cosmetic formulations. With its bicyclic structure and moderate molecular weight of 182.3 g/mol, this compound provides unique olfactory depth while demonstrating excellent stability across diverse pH environments.

perfuming

Science

Functions primarily as a fragrance component through olfactory receptor interaction, contributing powerful humus-like and rooty scent profiles. Its lipophilic nature (LogP ~3.1) enables moderate skin penetration, allowing for sustained fragrance release from topical applications.


Research

Medium confidence
Effective range 0.08–0.2%
Optimal

0.08%

Key findings

  1. 01 No significant sensitization potential demonstrated in delayed contact hypersensitivity testing
  2. 02 95th percentile usage level in fine fragrances showed safe systemic exposure margins for repeated application

Transparency

Not commonly dusted

Specialized fragrance ingredient used at low concentrations for specific olfactory purposes rather than therapeutic benefits


The Formula

Solubility
Oil
Optimal pH 3 – 11.5
0 7 14

Stability

Demonstrates exceptional stability across wide pH range (3.0-11.5) with low water solubility of approximately 86 mg/L, making it suitable for diverse cosmetic matrices

Conflicts

  • Strong oxidizing agents

Safety

CIR Status
Not reviewed
Max tested
0.2%
Sensitization risk Low

RIFM Expert Panel approved with established safety margins. GHS classification indicates harm only if swallowed in pure form (H302)


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Optional

A niche fragrance ingredient that adds unique earthy character to formulations with demonstrated safety at recommended usage levels.


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