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Cyclopentanone

Cyclopentanone

IUPAC name	cyclopentanone
Other names	ketocyclopentane adipic ketone
Identifiers
CAS number	120-92-3
RTECS number	GY4725000
SMILES	C1CCC(=O)C1
Properties
Molecular formula	C₅H₈O
Molar mass	84.12 g/mol
Appearance	clear, colorless liquid
Density	0.95 g/cm³, liquid
Melting point	-51°C (222.15K)
Boiling point	131°C (404.15K)
Solubility in water	minimal
Hazards
MSDS	Cyclopentanone
Flash point	26°C
Related Compounds
Related ketones	cyclohexanone 2-pentanone 3-pentanone
Related compounds	cyclopropane
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Cyclopentanone is a colorless liquid organic compound with a peppermint-like odor. It is a cyclic ketone, structurally similar to cyclopentane, consisting of a five-membered ring containing a ketone functional group.

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Safety

The compound is stable, but flammable; the vapour is denser than air by 2.3 times, and is explosive when combined with air. Cyclopentanone is harmful if swallowed, inhaled or absorbed through the skin. It is also irritant to the skin and respiratory system, and severely irritant to the eyes.