Cyclohexene, 1-methyl-4-(1-methylethenyl)-, sulfurized (CAS 68921-26-6) — Woody Base Note Fragrance Ingredient
Cyclohexene, 1-methyl-4-(1-methylethenyl)-, sulfurized
CAS 68921-26-6
What Is Cyclohexene, 1-methyl-4-(1-methylethenyl)-, sulfurized?
This synthetic fragrance ingredient is a sulfurized terpene derivative, primarily encountered in industrial fragrance applications and some niche perfumery. It contributes unique sulfurous nuances to compositions. While not common in consumer products, it’s valued by perfumers for adding depth and complexity to certain accords.
Safety Profile
PROFESSIONAL USEWhat Does Cyclohexene, 1-methyl-4-(1-methylethenyl)-, sulfurized Smell Like?
This sulfurized terpene delivers a complex olfactory profile – opening with sharp, pungent sulfur notes reminiscent of struck matches or volcanic minerals. The sulfur character gradually reveals underlying woody-terpenic aspects, with a dry-down that suggests charred woods and warm minerals. The evolution is slow, with sulfur notes persisting through the heart phase before settling into a smoky-woody base.
Chemistry, Properties & Perfumer Guide
The Chemistry
This compound is a sulfurized derivative of limonene, created through controlled sulfur addition reactions to the terpene backbone. The sulfur atoms introduce new chiral centers and significantly alter the molecule’s olfactory properties compared to its parent terpene. Industrial synthesis typically involves reacting limonene with elemental sulfur or sulfur-containing reagents under controlled conditions.
Physical & Chemical Properties
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.1-0.5% | Up to 1% | Used sparingly for sulfurous effects |
| Functional Fragrance | 0.05-0.2% | Up to 0.5% | Masking applications |
Classic Accords
Tip: Use in trace amounts to avoid overwhelming compositions with sulfur notes.
Alternatives & Comparisons
Less aggressive sulfur character with fruity nuances, suitable when a softer sulfur effect is desired.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No specific IFRA restrictions, but recommended usage levels should be followed due to potential sensitization.
GHS Classification
RIFM Assessment
No RIFM assessment currently available for this specific compound.
Sustainability
As a synthetic material, this ingredient avoids natural resource depletion concerns. However, sulfur chemistry requires careful waste management. Modern production methods aim to minimize environmental impact through closed-loop systems and catalyst recovery.
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Ingredient Data Sheet
CAS 68921-26-6Physical 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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