trans-2-Nonenyl Acetate (CAS 30418-89-4) — Mid Note Fragrance Ingredient
trans-2-Nonenyl Acetate
CAS 30418-89-4
What Is trans-2-Nonenyl Acetate?
trans-2-Nonenyl Acetate (CAS 30418-89-4) is an aroma chemical used as a fragrance and flavour ingredient. Its odour is described as apple, banana and fruity, placing it within the fruity family as a mid note with medium volatility. With a molecular weight of 184.3 (formula C11H20O2), it is handled by perfumers as a building block for compositions where a apple character is desired. The data below is compiled from public chemical and regulatory sources.
Safety Profile
GENERALLY SAFE
What Does trans-2-Nonenyl Acetate Smell Like?
The odour profile of trans-2-Nonenyl Acetate is reported as apple, banana, fruity, green, sweet, fresh. The dominant facet is its apple character, with the remaining notes adding nuance and complexity. As a mid note it contributes to the heart of a fragrance. Perceived intensity and exact character depend on concentration, the carrier and the surrounding accord.
Scent Profile
Profile derived from public odour-descriptor data; relative, not absolute.
Chemistry & Properties
The Chemistry
trans-2-Nonenyl Acetate has the molecular formula C11H20O2 and a molecular weight of 184.3 g/mol. Its canonical SMILES representation is CCCCCC\C=C\COC(C)=O. Its reported log P (XLogP) of 3.08 indicates a lipophilic, oil-soluble molecule, which informs how it partitions in a formula. Physical constants below are drawn from PubChem and EPA CompTox public datasets.
Physical & Chemical Properties
| Molecular Weight | 184.3 g/mol |
|---|---|
| Boiling Point | 228.9 °C |
| Melting Point | -38.55 °C |
| Flash Point | 88.36 °C |
| Density | 0.88 g/cm³ |
| Vapor Pressure | 0.04779 mmHg |
| Water Solubility | 0.0004197 g/L |
| XLogP | 3.08 |
Perfumer Guide
Alternatives & Comparisons
Ingredients occupying a similar odour space — useful as substitutes or companions when trans-2-Nonenyl Acetate is unavailable or restricted.
Shares apple, banana, fruity character — a candidate substitute or companion in the same odour space.
Shares apple, banana, fresh character — a candidate substitute or companion in the same odour space.
Shares apple, banana, fresh character — a candidate substitute or companion in the same odour space.
Safety & Regulatory
⚠ Regulatory Disclaimer
General reference only. IFRA, REACH and EU Cosmetics Regulation standards update periodically. Consult the current IFRA Standards Library before formulating. Not legal or regulatory advice.
IFRA Status
No IFRA restriction recorded in the data set. This is not a guarantee of unrestricted status — always confirm against the current IFRA Standards Library.
Odour detection threshold (air): 0.0091 ppb — a literature-curated value indicating its potency in the vapour phase.
Open trans-2-Nonenyl Acetate in Fragrance Studio (Pro) for the calibrated vapour-pressure curve, the modelled odour-threshold estimate, and the substitute-matching engine across 2,900+ aromachemicals.
References & Sources
- PubChem Compound Summary (NIH) — search by InChIKey
- EPA CompTox Chemicals Dashboard — physicochemical & fate data
- IFRA Standards Library (49th / 51st Amendment)
Data: PubChem (NIH), EPA CompTox, IFRA. Last reviewed: Jun 2026.
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