Decanenitrile (CAS 1975-78-6) — Green Top to Middle Note Fragrance Ingredient
Decanenitrile
CAS 1975-78-6
What Is Decanenitrile?
Decanenitrile is a synthetic fragrance ingredient rarely encountered by name in consumer products, though it may appear in trace amounts within certain perfumes and functional fragrances. Its subtle presence contributes to the overall complexity of modern scent compositions. This nitrile compound matters to perfumers for its ability to add crisp, slightly metallic green facets to fragrances without overpowering other notes. It’s particularly valued for creating modern interpretations of classic accords where a clean, technical edge is desired.
Safety Profile
GENERALLY SAFEWhat Does Decanenitrile Smell Like?
Decanenitrile presents a sharp, almost clinical opening with distinct green-herbaceous character reminiscent of freshly crushed stems. The initial impression carries a cool metallic edge like stainless steel exposed to morning dew, gradually softening into a waxy, slightly fatty undertone akin to green bell pepper skins. As it dries down, it reveals subtle citrus-rind nuances and a faint almond-like sweetness that never becomes gourmand. The overall effect is clean and modern – a synthetic interpretation of nature’s greenness without earthiness, making it valuable for contemporary fragrances requiring precision-cut freshness.
Chemistry, Properties & Perfumer Guide
The Chemistry
Decanenitrile belongs to the nitrile family of organic compounds, characterized by a -C≡N functional group attached to a decane chain. Unlike naturally occurring nitriles found in some plants (often as cyanogenic glycosides), this molecule is exclusively synthetic, typically produced through the dehydration of decanamide or by reaction of decanoic acid derivatives with ammonia. The linear carbon chain ensures good volatility while the nitrile group provides dipole interactions that influence both scent characteristics and molecular stability. Being a single isomer compound without chiral centers, it offers consistent performance in formulations.
Physical & Chemical Properties
| Appearance | Clear liquid |
|---|---|
| Molecular Formula | C10H19N |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.1-0.5% | Up to 1% | Used as green-modifier in trace amounts |
| Functional Fragrances | 0.05-0.2% | Up to 0.5% | Adds freshness to detergents |
| Technical Applications | 1-3% | Up to 5% | Solvent properties in specialty formulations |
Classic Accords
Tip: Use below 0.5% to avoid dominating compositions – works best when barely perceptible as a freshness enhancer.
Alternatives & Comparisons
Offers similar green character with added floral-cucumber nuances, useful when more pronounced top notes are desired.
Shorter carbon chain provides brighter, more citrus-leaning green effect with higher volatility.
Delivers sharper green-leaf character with grassier aspects for more naturalistic compositions.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not currently restricted by IFRA standards. No specific usage limits established.
RIFM Assessment
No complete RIFM assessment available. Preliminary data suggests low systemic toxicity at fragrance-relevant concentrations.
Sustainability
As a purely synthetic material, Decanenitrile’s production doesn’t impact agricultural resources. Its synthesis typically involves petrochemical feedstocks, though modern routes may incorporate bio-based intermediates. The nitrile group’s stability means it doesn’t readily hydrolyze into more toxic cyanide forms under environmental conditions. Future green chemistry approaches may improve the atom economy of its production processes.
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