p-Ethylphenol (CAS 0123-07-09) — Balsamic Base Note Fragrance Ingredient
p-Ethylphenol
CAS 0123-07-09
What Is p-Ethylphenol?
p-Ethylphenol is a synthetic aromatic compound used in perfumery for its smoky, leathery character. You’ll encounter it in niche fragrances aiming for bold, animalic effects. This molecule matters because it adds depth and complexity to leather accords, though its intensity requires careful dosing.
Safety Profile
USE WITH AWARENESSWhat Does p-Ethylphenol Smell Like?
p-Ethylphenol announces itself with a sharp phenolic punch reminiscent of band-aids and antiseptic, quickly evolving into a smoky leather heart that conjures images of well-worn saddles and burning birch tar. The dry-down reveals a persistent animalic muskiness that lingers close to skin. At high concentrations it can smell medicinal, but when expertly blended it adds irresistible primal depth to fragrances.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used here to enhance the birch tar leather accord, contributing smoky phenolic facets that make this fragrance legendary for its Russian leather interpretation.
Provides subtle animalic backbone to the opulent frankincense and berry accord, adding sensual depth without overpowering the composition.
Chemistry, Properties & Perfumer Guide
The Chemistry
p-Ethylphenol belongs to the phenol class of aromatic compounds. While phenols occur naturally in smoke and some essential oils, perfumery uses synthetically produced p-ethylphenol for consistency. It’s typically synthesized through Friedel-Crafts alkylation of phenol with ethanol. The para-position of the ethyl group is crucial for its odor characteristics.
Physical & Chemical Properties
| Boiling Point | 218-219 °C |
|---|---|
| Flash Point | 93 °C |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.1-0.5% | Up to 1% | Powerful modifier for leather/smoke accords |
| Functional Fragrance | 0.01-0.1% | Up to 0.2% | Used sparingly in soaps/detergents |
Classic Accords
Tip: Always pre-dilute to 1% or lower before blending due to intense odor impact.
Alternatives & Comparisons
Less intense phenolic character, works well when a softer leather note is desired.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No specific IFRA restrictions. Use within general phenol guidelines.
GHS Classification
RIFM Assessment
RIFM evaluation recommends keeping below 1% in finished products.
Sustainability
Synthetic production avoids natural sourcing concerns. Manufacturing follows standard petrochemical processes with typical environmental impacts.
Explore p-Ethylphenol
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References
- Arctander S. (1969). Perfume and Flavor Chemicals. Montclair: Steffen Arctander.
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
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