Cyclopentanone

Cyclopentanone
IUPAC name cyclopentanone
Other names ketocyclopentane adipic ketone
Identifiers
CAS number	120-92-3 Y
PubChem	8452
ChemSpider	8141 Y
UNII	220W81TN3S
KEGG	C00557 Y
ChEBI	CHEBI:16486
ChEMBL	CHEMBL18620 Y
RTECS number	GY4725000
Jmol-3D images	Image 1
SMILES C1CCC(=O)C1
InChI InChI=1S/C5H8O/c6-5-3-1-2-4-5/h1-4H2 Y Key: BGTOWKSIORTVQH-UHFFFAOYSA-N Y InChI=1/C5H8O/c6-5-3-1-2-4-5/h1-4H2 Key: BGTOWKSIORTVQH-UHFFFAOYAP
Properties
Molecular formula	C5H8O
Molar mass	84.12 g/mol
Appearance	clear, colorless liquid
Density	0.95 g/cm3, liquid
Melting point	-58.2 °C, 215 K, -73 °F
Boiling point	130.6 °C, 404 K, 267 °F
Solubility in water	Slightly soluble
Hazards
MSDS	Cyclopentanone
Flash point	26 °C
Related compounds
Related ketones	cyclohexanone 2-pentanone 3-pentanone
Related compounds	cyclopropane
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox 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.

Safety

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

Use

Cyclopentanone is commonly used as a thinner for various epoxies used in MEMS fabrication, such as SU-8.

External links

• Safety (MSDS) data for cyclopentanone, from Oxford University