Terpenes and Terpenoids, patchouli-oil, a-guaiene fraction, oxidized (CAS 1442462-94-3) — Woody Base Note Fragrance Ingredient
Terpenes and Terpenoids, patchouli-oil, a-guaiene fraction, oxidized
CAS 1442462-94-3
What Is Terpenes and Terpenoids, patchouli-oil, a-guaiene fraction, oxidized?
Oxidized α-guaiene is a refined fragrance material derived from patchouli oil. It’s found in woody, earthy perfumes and some luxury skincare products. This ingredient enhances depth and longevity in fragrances, contributing a sophisticated aged-patchouli character that’s smoother than raw patchouli oil.
Safety Profile
USE WITH AWARENESSWhat Does Terpenes and Terpenoids, patchouli-oil, a-guaiene fraction, oxidized Smell Like?
Oxidized α-guaiene unfolds with an initial damp forest floor earthiness that gradually reveals aged leather and tobacco nuances. The dry-down carries a warm, ambery woodiness with subtle animalic undertones reminiscent of fine antique wood cabinets. Unlike raw patchouli, it lacks the sharp camphoraceous edge, instead offering a rounded, almost honeyed decay that blends seamlessly with oriental and chypre bases.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used here to create a polished, contemporary patchouli interpretation that avoids the hippie associations of raw patchouli, adding velvety depth without overwhelming sweetness.
The oxidized guaiene fraction contributes to the fragrance’s signature ‘white patchouli’ effect, softening the earthiness with a clean, almost powdery wood character.
Chemistry, Properties & Perfumer Guide
The Chemistry
Oxidized α-guaiene is a sesquiterpene derivative formed through controlled oxidation of patchouli oil’s natural α-guaiene content. The oxidation process creates oxygenated derivatives including guaiene epoxides and alcohols, which modify the scent profile. Industrial production typically involves photo-oxidation or metal-catalyzed oxidation of isolated guaiene fractions.
Physical & Chemical Properties
| Appearance | Viscous pale amber liquid |
|---|---|
| Solubility | Soluble in alcohol and oils |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-2% | Up to 5% | Base note modifier |
| Home Fragrance | 1-3% | Up to 8% | Adds warmth to woody diffuser blends |
Classic Accords
Tip: Use to ‘age’ new compositions instantly – adds the character of well-matured perfumes without actual aging time.
Alternatives & Comparisons
For a cleaner patchouli effect without oxidation notes. Retains more of the original camphoraceous character.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No specific restrictions under IFRA 51st Amendment. Subject to general patchouli oil guidelines.
EU Allergen Declaration
Not listed as EU allergen, but may contain trace oxidation byproducts requiring declaration.
GHS Classification
RIFM Assessment
RIFM assessment pending for oxidized guaiene fractions. Currently evaluated under patchouli oil safety data.
Sustainability
Synthetic production reduces pressure on natural patchouli crops while allowing precise control of oxidation byproducts. The process minimizes waste by utilizing byproducts from patchouli oil fractionation.
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Ingredient Data Sheet
CAS 1442462-94-3Physical data: PubChem (NIH/NLM), U.S. EPA CompTox Dashboard, EPA OPERA models, RDKit. Odor & flavor: Arctander (Perfume & Flavor Chemicals), Fenaroli's Handbook of Flavor Ingredients, Leffingwell. Thresholds: van Gemert (Compilations of Odour Threshold Values). Regulatory: IFRA Standards 51st, FEMA GRAS. Trade names: Surburg (Common Fragrance & Flavor Materials). All data compiled and cross-referenced for perfumertools.com.
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