,-Dimethylbenzenepentanol (CAS 72681-01-07) — Woody Heart to base Note Fragrance Ingredient
_,_-Dimethylbenzenepentanol
CAS 72681-01-07
What Is _,_-Dimethylbenzenepentanol?
Dimethylbenzenepentanol is a synthetic fragrance ingredient primarily used in modern perfumery. You’ll encounter it in floral and woody fragrances, often as a subtle modifier that adds depth and longevity. This molecule matters because it bridges fresh top notes with warmer base notes, creating seamless transitions in complex perfumes while being more stable than some natural alternatives.
Safety Profile
GENERALLY SAFEWhat Does _,_-Dimethylbenzenepentanol Smell Like?
Dimethylbenzenepentanol unfolds like a slow-motion blossom – initially presenting a crisp, almost metallic freshness that recalls crushed green stems. Within minutes, it softens into a floral heart reminiscent of magnolia petals brushed with citrus zest. The dry-down reveals its true character: a velvety woodiness that lingers close to the skin, somewhere between sandalwood sawdust and the waxy smoothness of a just-opened novel. Throughout its evolution, it maintains a clean, almost aquatic transparency that prevents heaviness.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used as a structural backbone to amplify green florals, creating the illusion of dewy leaves without vegetal harshness.
Provides the grapefruit accord with lasting power, preventing citrus fade while maintaining fruity brightness.
Chemistry, Properties & Perfumer Guide
The Chemistry
A synthetic aromatic alcohol belonging to the phenylpropanoid class, though not found in nature. The dimethyl substitution pattern creates steric hindrance that slows evaporation compared to simpler phenols. Industrial synthesis typically begins with benzene derivatives through Friedel-Crafts alkylation followed by oxidation. The pentanol chain length provides optimal balance between volatility and substantivity for perfumery applications.
Physical & Chemical Properties
| Appearance | Colorless to pale yellow liquid |
|---|---|
| Boiling Point | Estimated 240-260 °C |
| Density | ~0.98 g/cm³ (estimated) |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-3% | Up to 5% | Acts as floral enhancer and fixative |
| Functional Fragrance | 0.5-1% | Up to 2% | Provides clean laundry nuance |
Classic Accords
Tip: Use below 5% to avoid masking delicate top notes – works best when allowed to emerge gradually.
Alternatives & Comparisons
More rosy but less tenacious – better for true floral recreations requiring shorter lifespan.
Similar substantivity with more balsamic character – useful when warmer base notes are desired.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not currently restricted under IFRA standards (as of 2023 Amendment 51).
RIFM Assessment
Under review by RIFM – interim use recommendations follow general aromatic alcohol guidelines.
Sustainability
As a purely synthetic material, production avoids agricultural land use but depends on petrochemical feedstocks. The multi-step synthesis requires significant energy input, though modern catalytic methods have reduced waste compared to early production routes. Not biodegradable but considered low environmental risk due to low aquatic toxicity.
Explore _,_-Dimethylbenzenepentanol
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References
- IFRA Standards Library (2023). Amendment 51. IFRA
- Arctander S. (1969). Perfume and Flavor Chemicals.
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
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