2-N-PENTYLCYCLOPENTANONE

CAS NO.：4819-67-4
Empirical Formula: C10H18O
Molecular Weight: 154.25
MDL number: MFCD00193623
EINECS: 225-392-2
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 04:45:44

What is 2-N-PENTYLCYCLOPENTANONE?

Chemical properties

2-N-PENTYLCYCLOPENTANONE is a colorless liquid with a complex floral, aromatic, fruity odor and a lactonic undertone.
2-Pentylcyclopentanone and its higher homolog 2-heptylcyclopentanone are prepared by aldol condensation of cyclopentanone with the corresponding aliphatic aldehydes to give 2-alkylidenecyclopentanone and subsequent hydrogenation of the double bond. The aldol reaction can be performed efficiently by using N-containing bases such as proline and piperidine, in the presence of acid. The (R)-enantiomers of 2-alkylcyclopentanones can be prepared in high optical purity from 2-alkylcyclopentenol esters or 2-alkylidene cyclopentanones by using enzymatic methods.
2-Pentylcyclopentanone is used in jasmine, herbal, and lavender compositions.

Flammability and Explosibility

Non flammable

Properties of 2-N-PENTYLCYCLOPENTANONE

Boiling point:	90 °C(Press: 10 Torr)
Density	0.895±0.06 g/cm3(Predicted)
vapor pressure	15.4Pa at 25℃
storage temp.	2-8°C
Odor	at 1.00 % in dipropylene glycol. coconut jasmin oily rose fern green herbal
Water Solubility	278.8mg/L at 20℃
EPA Substance Registry System	Cyclopentanone, 2-pentyl- (4819-67-4)

Safety information for 2-N-PENTYLCYCLOPENTANONE

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.