Tricyclo[3.3.1.1.(3.7)]decan-2-ol, 4-methyl-8-methylene- (CAS 122760-84-3) — Woody Base Note Fragrance Ingredient
Tricyclo[3.3.1.1.(3.7)]decan-2-ol, 4-methyl-8-methylene-
CAS 122760-84-3
What Is Tricyclo[3.3.1.1.(3.7)]decan-2-ol, 4-methyl-8-methylene-?
Tricyclo[3.3.1.1.(3.7)]decan-2-ol, 4-methyl-8-methylene- is a synthetic fragrance ingredient used in modern perfumery. It contributes unique woody and amber nuances to compositions. This ingredient matters because it offers perfumers a novel way to create depth and longevity in fragrances without relying on traditional materials.
Safety Profile
GENERALLY SAFEWhat Does Tricyclo[3.3.1.1.(3.7)]decan-2-ol, 4-methyl-8-methylene- Smell Like?
This synthetic molecule offers a complex olfactory profile, blending woody, amber, and slightly musky nuances. It evolves on the skin, starting with a crisp, almost metallic edge that softens into a warm, lingering base. The dry-down exhibits remarkable tenacity, leaving a subtle trail reminiscent of aged cedar and sun-warmed stones.
2D Molecular Structure
SMILES: CC1C2CC3CC1C(O)C(C2)C3=C
Chemistry, Properties & Perfumer Guide
The Chemistry
Tricyclo[3.3.1.1.(3.7)]decan-2-ol, 4-methyl-8-methylene- is a synthetic compound belonging to the tricyclic terpenoid class. Its complex structure contributes to its unique olfactory properties. The molecule’s rigidity and functional groups influence its volatility and scent characteristics, making it particularly valuable in modern perfumery for creating novel accords.
Physical & Chemical Properties
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-3% | Up to 5% | Adds depth and longevity |
| Functional Fragrance | 0.5-2% | Up to 3% | Used in fabric conditioners |
Classic Accords
Tip: Use in small quantities to enhance woody and amber accords without overpowering the composition.
Alternatives & Comparisons
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No specific IFRA restrictions currently apply.
RIFM Assessment
No RIFM safety assessment available at this time.
Sustainability
As a synthetic material, this ingredient’s environmental impact depends on production methods. Its persistence in the environment should be considered during formulation.
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Physicochemical Properties
DTXSID: DTXSID80869677
Physical Properties
| Molecular Weight | 178.275 g/mol🔬 EPA CompTox |
| Density | 1.051 g/cm^3📊 OPERA |
| Boiling Point | 255.588 °C📊 OPERA |
| Melting Point | 135.931 °C📊 OPERA |
| Flash Point | 97.998 °C📊 OPERA |
| Refractive Index | 1.541 Dimensionless📊 OPERA |
| Molar Volume | 166.887 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 2.863 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 2.863 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 2.863 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 8.35 Log10 unitless📊 OPERA |
| Water Solubility | 0.008 mol/L📊 OPERA |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.005 mmHg📊 OPERA |
| Viscosity | 38.354 cP📊 OPERA |
| Surface Tension | 37.267 dyn/cm📊 OPERA |
| Thermal Conductivity | 126.18 mW/(m*K)📊 OPERA |
Molecular Descriptors
| Topological Polar Surface Area | 20.23 Ų💻 Computed |
| H-Bond Donors | 1 count💻 Computed |
| H-Bond Acceptors | 1 count💻 Computed |
| Rotatable Bonds | 0 count💻 Computed |
| Aromatic Rings | 0 count💻 Computed |
| Molar Refractivity | 52.419 cm^3/mol📊 OPERA |
| Polarizability | 20.78 Å^3📊 OPERA |
Data Sources:
🔬 EPA Experimental data from U.S. EPA CompTox Chemicals Dashboard & CTX APIs. 📊 OPERA Predicted using EPA's OPERA QSAR models. 💻 Computed Calculated from SMILES using RDKit.
