Dihydromyrcenyl acetate (CAS 53767-93-4) — Citrus Top Note Fragrance Ingredient
Dihydromyrcenyl acetate
CAS 53767-93-4
What Is Dihydromyrcenyl acetate?
Dihydromyrcenyl acetate is a synthetic fragrance ingredient commonly found in citrusy and fresh perfumes, shower gels, and cleaning products. It adds a bright, uplifting character to formulations. This molecule matters because it provides cost-effective citrus notes without the phototoxicity concerns of some natural citrus oils, making it versatile for sun-exposed skin products.
Safety Profile
GENERALLY SAFEWhat Does Dihydromyrcenyl acetate Smell Like?
Dihydromyrcenyl acetate bursts with a crisp, lemony freshness reminiscent of freshly peeled citrus zest, though more rounded and less acidic than natural citrus oils. The initial brightness mellows into a clean, slightly woody undertone over time, like sun-warmed pine needles with a whisper of sweet herbs. Unlike sharper citrus top notes, it maintains a soft persistence that bridges well into floral heart notes without overpowering them. The dry-down reveals a subtle, almost minty coolness that makes it particularly refreshing in warm-weather compositions.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used here to amplify the citrus opening while providing better stability than natural lemon oil, creating the signature ‘sun-drenched Mediterranean’ effect that persists through the fragrance’s evolution.
Provides the unisex citrus sparkle in this iconic fresh fragrance, blending seamlessly with green tea and jasmine notes for a clean, modern effect.
2D Molecular Structure
SMILES: CC(CCCC(C)(C)OC(C)=O)C=C
Chemistry, Properties & Perfumer Guide
The Chemistry
Dihydromyrcenyl acetate is a monoterpene acetate synthesized through the acetylation of dihydromyrcene, itself derived from β-pinene or turpentine. The molecule lacks chiral centers, ensuring consistent odor profiles across batches. Industrial production typically involves acid-catalyzed esterification, with careful control of reaction conditions to prevent rearrangement byproducts that could alter the scent character. Its molecular structure combines the volatility of terpenes with the increased substantivity imparted by the acetate group.
Physical & Chemical Properties
| Appearance | Colorless to pale yellow liquid |
|---|---|
| Boiling Point | ~200 °C (estimated) |
| Density | ~0.89 g/cm³ (estimated) |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 2-5% | Up to 10% | Citrus top note reinforcement |
| Functional Fragrances | 0.5-2% | Up to 5% | Clean, fresh character |
Classic Accords
Tip: Use as a citrus extender at 1:3 ratio with natural citrus oils to boost longevity while maintaining natural character.
Alternatives & Comparisons
For sharper citrus punch but with higher volatility and less stability in formulations.
When more lemony intensity is needed, though requires careful handling due to sensitization potential.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not restricted under current IFRA standards (Amendment 49).
RIFM Assessment
Evaluated by RIFM with no significant safety concerns at current use levels.
Sustainability
As a petrochemical-derived material, dihydromyrcenyl acetate raises typical synthetic sourcing concerns, though its production from turpentine (a forestry byproduct) offers some renewable aspects. Compared to natural citrus oils, it requires less land use per kilogram of fragrance material produced and doesn’t contribute to citrus crop pressures.
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References
- Bauer et al. (2001). Common Fragrance and Flavor Materials. Wiley-VCH.
- IFRA Standards Library IFRA Website
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorPhysicochemical Properties
DTXSID: DTXSID4052182
Physical Properties
| Molecular Weight | 198.306 g/mol🔬 EPA CompTox |
| Density | 0.874 g/cm^3🔬 EPA CTX |
| Boiling Point | 215.6 °C🔬 EPA CTX |
| Melting Point | -52.314 °C📊 OPERA |
| Flash Point | 81.45 °C🔬 EPA CTX |
| Refractive Index | 1.437 Dimensionless📊 OPERA |
| Molar Volume | 225.617 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 4.9 Log10 unitless🔬 EPA CTX |
| LogD (pH 5.5) | 4.312 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 4.312 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 5.55 Log10 unitless📊 OPERA |
| Water Solubility | 0 mol/L🔬 EPA CTX |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.153 mmHg🔬 EPA CTX |
| Viscosity | 1.936 cP📊 OPERA |
| Surface Tension | 26.66 dyn/cm📊 OPERA |
| Thermal Conductivity | 128.988 mW/(m*K)📊 OPERA |
Molecular Descriptors
| Topological Polar Surface Area | 26.3 Ų💻 Computed |
| H-Bond Donors | 0 count💻 Computed |
| H-Bond Acceptors | 2 count💻 Computed |
| Rotatable Bonds | 6 count💻 Computed |
| Aromatic Rings | 0 count💻 Computed |
| Molar Refractivity | 59.068 cm^3/mol📊 OPERA |
| Polarizability | 23.416 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.
