2-Pentanone

2-Pentanone

Names
Preferred IUPAC name Pentan-2-one
Other names methyl propyl ketone 2-pentanone MPK
Identifiers
CAS Number	107-87-9 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:16472 Y
ChEMBL	ChEMBL45345 Y
ChemSpider	7607 Y
ECHA InfoCard	100.003.208
KEGG	C01949 Y
PubChem CID	7895
RTECS number	CY1400000
UNII	I97392I10V Y
CompTox Dashboard (EPA)	DTXSID0021888
SMILES O=C(C)CCC
Properties
Chemical formula	C5H10O
Molar mass	86.13 g/mol
Appearance	Colorless liquid
Odor	resembling acetone
Density	0.809 g/ml
Melting point	−78 °C (−108 °F; 195 K)
Boiling point	102 °C (216 °F; 375 K)
Solubility in water	6% (20°C)
Vapor pressure	3.6 kPa (20 °C)
Magnetic susceptibility (χ)	-57.41·10−6 cm3/mol
Refractive index (nD)	1.390 (20 °C)
Viscosity	0.50 mPa·s (20 °C)
Hazards
Flash point	10 °C (50 °F)
Explosive limits	1.5%-8.2%
U.S. Permissible exposure limit (PEL)	TWA 200 ppm (700 mg/m3)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

2-pentanone, or methyl propyl ketone (MPK), is an organic compound. It is a ketone and is very similar to butanone, but it is more expensive to make. Because of this, it isn't used as a solvent as often as butanone. Some of it is found in tobacco.