Ethyl 2-Hexenoate (CAS 1552-67-6) — Top Note Fragrance Ingredient

ByThe Good Scents



green

Ethyl 2-Hexenoate

CAS 1552-67-6

Note
top
Volatility
high
MW
142.2
Data as of: Jun 2026

What Is Ethyl 2-Hexenoate?

Ethyl 2-Hexenoate (CAS 1552-67-6) is an aroma chemical used as a fragrance and flavour ingredient. Its odour is described as fruity, green and rum, placing it within the green family as a top note with high volatility. With a molecular weight of 142.2 (formula C8H14O2), it is handled by perfumers as a building block for compositions where a fruity character is desired. The data below is compiled from public chemical and regulatory sources.

Safety Profile

GENERALLY SAFE

Generally safeUse with awarenessProfessional use
CAS
1552-67-6
Formula
C8H14O2
MW
142.2
InChIKey
SJRXWMQZUAOMRJ-UHFFFAOYSA-N
Ethyl 2-Hexenoate 2D structure

Ethyl 2-Hexenoate
C8H14O2
Layer 1 · Enthusiast

What Does Ethyl 2-Hexenoate Smell Like?

The odour profile of Ethyl 2-Hexenoate is reported as fruity, green, rum, pear, waxy, pungent. The dominant facet is its fruity character, with the remaining notes adding nuance and complexity. As a top note it contributes to the opening 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.

Layer 2

Chemistry & Properties

The Chemistry

Ethyl 2-Hexenoate has the molecular formula C8H14O2 and a molecular weight of 142.2 g/mol. Its canonical SMILES representation is CCCC=CC(=O)OCC. Its reported log P (XLogP) of 1.91 indicates a moderately polar 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 142.2 g/mol
Boiling Point 174.0 °C
Melting Point -31.21 °C
Flash Point 64.70 °C
Density 1.07 g/cm³
Vapor Pressure 1.32 mmHg
Water Solubility 0.01 g/L
XLogP 1.91

Perfumer Guide

Note Position
Top
Volatility
High
Primary Odour
Fruity

Alternatives & Comparisons

Ingredients occupying a similar odour space — useful as substitutes or companions when Ethyl 2-Hexenoate is unavailable or restricted.

1
4-Heptanone CAS 123-19-3

Shares fruity, green, pungent character — a candidate substitute or companion in the same odour space.

2
methyl (4E)-octa-4,7-dienoate CAS 189440-77-5

Shares fruity, green, pear character — a candidate substitute or companion in the same odour space.

3
Ethyl trans-2-Decenoate CAS 7367-88-6

Shares apple, citrus, fruity character — a candidate substitute or companion in the same odour space.

Layer 3

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): 0.0002 ppb — a literature-curated value indicating its potency in the vapour phase.

Formulating with Ethyl 2-Hexenoate?

Open Ethyl 2-Hexenoate in Fragrance Studio (Pro) for the calibrated vapour-pressure curve, the modelled odour-threshold estimate, and the substitute-matching engine across 2,900+ aromachemicals.

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References & Sources

  1. PubChem Compound Summary (NIH) — search by InChIKey
  2. EPA CompTox Chemicals Dashboard — physicochemical & fate data
  3. IFRA Standards Library (49th / 51st Amendment)
Sources: PubChem (NIH) · EPA CompTox · IFRA Standards Library · public GHS classification. Odour descriptors are original editorial summaries of public profiles, not reproduced from any single proprietary source.

Data: PubChem (NIH), EPA CompTox, IFRA. Last reviewed: Jun 2026.

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