Dihydromyrcenol (CAS 18479-58-8) — Citrus Top Note Fragrance Ingredient
Dihydromyrcenol
CAS 18479-58-8
What Is Dihydromyrcenol?
Dihydromyrcenol is a fresh, citrusy aroma chemical commonly used in modern fragrances. You’ll encounter it in fresh fougères, aquatic colognes, and laundry-type scents. This ingredient matters because it creates the crisp ‘just-showered’ effect in many contemporary masculine fragrances, blending citrus brightness with woody undertones.
Safety Profile
GENERALLY SAFE
What Does Dihydromyrcenol Smell Like?
Dihydromyrcenol bursts with an intense citrus-lime freshness reminiscent of freshly peeled grapefruit, quickly revealing a clean woody character like freshly sanded pine. The top notes have a bracing, almost metallic clarity that evolves into a transparent woody-herbal heart. Dry-down reveals subtle floral nuances hiding beneath its primary crispness, leaving a long-lasting impression of alpine air and sun-bleached driftwood. Its odor profile is remarkably stable, maintaining linear freshness without the harshness of some citrus synthetics.
Scent Profile
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Provides the signature aquatic freshness that defines this genre, blending with lavender and mint to create the illusion of ocean breezes.
Forms the crisp backbone of this sporty fragrance, enhancing mint and ozone notes while preventing sweetness from dominating.
Contributes to the watery transparency, working with calone to create its distinctive ‘rain on hot stones’ effect.
2D Molecular Structure
SMILES: CC(CCCC(C)(C)O)C=C
Chemistry, Properties & Perfumer Guide
The Chemistry
Dihydromyrcenol is a monoterpenoid alcohol derived from myrcene. Industrially produced via selective hydrogenation of myrcene followed by hydration, it exists as a mixture of isomers. The molecule’s stability comes from its saturated structure, making it resistant to oxidation while maintaining excellent volatility. Its relatively simple structure belies complex odor properties due to precise stereochemical arrangements.
Physical & Chemical Properties
| Boiling Point | 198-200 °C |
|---|---|
| Density | 0.85 g/cm³ |
| Flash Point | 75 °C |
| Solubility | Insoluble in water, soluble in alcohol |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 5-15% | Up to 25% | Core fresh modifier |
| Functional Fragrance | 1-5% | Up to 10% | Laundry freshness booster |
Classic Accords
+ Lavandin + Coumarin = Modern Fougère
+ Galaxolide + Bergamot = Shower Fresh
Tip: Use to brighten woody bases without adding citrus volatility.
Alternatives & Comparisons
More floral and less woody, used when needing softer citrus character.
For more floral-citrus effects with less woody dryness.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. IFRA, REACH, EU Cosmetics Regulation standards update periodically. Consult current IFRA Standards Library before formulating. Not legal or regulatory advice.
IFRA Status
No IFRA restrictions (48th Amendment).
RIFM Assessment
RIFM assessment confirms safe use at current industry levels.
Sustainability
Synthesized from turpentine derivatives, making it renewable when sourced from managed pine forests. Production requires careful solvent management but generates minimal waste compared to some aroma chemicals.
Explore Dihydromyrcenol
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Industry & Science Data
References
- Bauer et al. (2001). Common Fragrance and Flavor Materials. Wiley-VCH.
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Mar 2026.
Physicochemical Properties
DTXSID: DTXSID8029317
Physical Properties
| Molecular Weight | 156.269 g/mol🔬 EPA CompTox |
| Density | 0.832 g/cm^3🔬 EPA CTX |
| Boiling Point | 193 °C🔬 EPA CTX |
| Melting Point | -18.22 °C📊 OPERA |
| Flash Point | 76 °C🔬 EPA CTX |
| Refractive Index | 1.444 Dimensionless📊 OPERA |
| Molar Volume | 186.627 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 3.074 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 3.074 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 3.074 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 6.24 Log10 unitless📊 OPERA |
| Water Solubility | 0.006 mol/L🔬 EPA CTX |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.15 mmHg🔬 EPA CTX |
| Viscosity | 4.834 cP📊 OPERA |
| Surface Tension | 26.96 dyn/cm📊 OPERA |
| Thermal Conductivity | 137.202 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 | 5 count💻 Computed |
| Aromatic Rings | 0 count💻 Computed |
| Molar Refractivity | 49.562 cm^3/mol📊 OPERA |
| Polarizability | 19.648 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.
