Rose ketones (CAS 59739-63-8) — Mid Note Fragrance Ingredient

ByThe Good Scents



terpenic

Rose ketones

CAS 59739-63-8

Note
mid
Volatility
low
MW
190.3
Data as of: Jun 2026

What Is Rose ketones?

Rose ketones (CAS 59739-63-8) is an aroma chemical used as a fragrance and flavour ingredient. Its odour is described as apple, floral and fruity, placing it within the terpenic family as a mid note with low volatility. With a molecular weight of 190.3 (formula C13H18O), 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

USE WITH AWARENESS

Generally safeUse with awarenessProfessional use
CAS
59739-63-8
Formula
C13H18O
MW
190.3
InChIKey
POIARNZEYGURDG-ALCCZGGFSA-N
Rose ketones 2D structure

Rose ketones
C13H18O
Layer 1 · Enthusiast

What Does Rose ketones Smell Like?

The odour profile of Rose ketones is reported as apple, floral, fruity, plum, rose, tobacco. 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.

Layer 2

Chemistry & Properties

The Chemistry

Rose ketones has the molecular formula C13H18O and a molecular weight of 190.3 g/mol. Its canonical SMILES representation is C\C=C/C(=O)C1=C(C)C=CCC1(C)C. Its reported log P (XLogP) of 3.43 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 190.3 g/mol
Boiling Point 265.0 °C
Melting Point 37.62 °C
Flash Point 108.5 °C
Density 0.877 g/cm³
Vapor Pressure 0.02322 mmHg
Water Solubility 0.000674 g/L
XLogP 3.43

Perfumer Guide

Note Position
Mid
Volatility
Low
Primary Odour
Apple

Alternatives & Comparisons

Ingredients occupying a similar odour space — useful as substitutes or companions when Rose ketones is unavailable or restricted.

1
1-(2,6,6-trimethylcyclohex-3-en-1-yl)but-2-en-1-one CAS 71048-82-3

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

2
Rose ketones CAS 33673-71-1

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

3
1-(2,4,4-Trimethyl-1-cyclohexen-1-yl)-2-buten-1-one CAS 70266-48-7

Shares floral, fruity, honey 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

Subject to an IFRA restriction (51st Amendment) — maximum use levels apply by product category. Consult the current IFRA Standards Library before formulating.

GHS Classification

Signal word: Warning

H317H410

Odour detection threshold (air): 0.00032 ppb — a literature-curated value indicating its potency in the vapour phase.

Formulating with Rose ketones?

Open Rose ketones 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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