2-Methyl-2-hepten-6-ol (CAS 1569-60-4) — Green Top to middle Note Fragrance Ingredient
2-Methyl-2-hepten-6-ol
CAS 1569-60-4
What Is 2-Methyl-2-hepten-6-ol?
2-Methyl-2-hepten-6-ol is a synthetic fragrance ingredient used to add fresh, green nuances to perfumes and scented products. You’ll encounter it in modern floral and citrus compositions. This molecule matters because it provides a crisp, natural-smelling green character that helps bridge top notes to heart notes in fragrances, creating a sense of movement and evolution in the scent.
Safety Profile
GENERALLY SAFEWhat Does 2-Methyl-2-hepten-6-ol Smell Like?
2-Methyl-2-hepten-6-ol delivers a vibrant green freshness reminiscent of crushed leaves and unripe fruits. The opening is sharp and slightly metallic, like freshly cut stems, evolving into a cleaner, more floral-green character. In drydown, it retains a subtle vegetal quality that blends well with citrus and floral materials. The overall effect is like walking through a dew-covered garden at dawn – moist, alive, and slightly pungent.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used to enhance the radical green freshness that made this fragrance revolutionary. Provides the ‘snapped stem’ effect that defines the composition.
Contributes to the invigorating green-herbal character that defines this energizing fragrance, pairing with citrus and woody notes.
2D Molecular Structure
SMILES: CC(O)CCC=C(C)C
Chemistry, Properties & Perfumer Guide
The Chemistry
2-Methyl-2-hepten-6-ol is an unsaturated aliphatic alcohol with molecular formula C8H16O. As a synthetic material, it’s typically produced through aldol condensation reactions followed by selective hydrogenation. The molecule features both a double bond and hydroxyl group, making it moderately reactive. The specific stereochemistry influences its odor profile, with different isomers exhibiting varying intensity and character.
Physical & Chemical Properties
| Appearance | Colorless to pale yellow liquid |
|---|---|
| Odor Threshold | Low ppm range |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-2% | Up to 5% | Green modifier |
| Functional Fragrance | 0.1-0.5% | Up to 1% | Freshness booster |
Classic Accords
Tip: Use to add naturalistic green effects without excessive harshness.
Alternatives & Comparisons
For a more intense green character with grassy aspects.
When a fruitier green note is desired.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No IFRA restrictions currently apply.
RIFM Assessment
Not currently evaluated by RIFM.
Sustainability
As a synthetic material, 2-Methyl-2-hepten-6-ol has minimal environmental impact in production. Being petroleum-derived, its sustainability depends on the manufacturer’s energy sources and waste management practices. It offers an alternative to natural green materials that may have agricultural impacts.
Explore 2-Methyl-2-hepten-6-ol
Browse essential oils and aroma compounds.
Browse on iHerb →Affiliate disclosure: we may earn a small commission at no extra cost to you.
Physicochemical Properties
DTXSID: DTXSID8051754
Physical Properties
| Molecular Weight | 128.215 g/mol🔬 EPA CompTox |
| Density | 0.849 g/cm^3📊 OPERA |
| Boiling Point | 175 °C🔬 EPA CTX |
| Melting Point | -41.494 °C📊 OPERA |
| Flash Point | 67.875 °C🔬 EPA CTX |
| Refractive Index | 1.446 Dimensionless📊 OPERA |
| Molar Volume | 151.888 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 2.569 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 2.569 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 2.569 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 5.68 Log10 unitless📊 OPERA |
| Water Solubility | 0.023 mol/L📊 OPERA |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.36 mmHg📊 OPERA |
| Viscosity | 3.044 cP📊 OPERA |
| Surface Tension | 26.527 dyn/cm📊 OPERA |
| Thermal Conductivity | 142.121 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 | 3 count💻 Computed |
| Aromatic Rings | 0 count💻 Computed |
| Molar Refractivity | 40.506 cm^3/mol📊 OPERA |
| Polarizability | 16.058 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.
