2-Pentanone

Pentan-2-one
IUPAC name pentan-2-one
Other names methyl propyl ketone 2-pentanone
Identifiers
CAS number	107-87-9 Y
PubChem	7895
ChemSpider	7607 Y
UNII	I97392I10V Y
KEGG	C01949 Y
ChEBI	CHEBI:16472 Y
ChEMBL	CHEMBL45345 Y
RTECS number	CY1400000
Jmol-3D images	Image 1
SMILES O=C(C)CCC
InChI InChI=1S/C5H10O/c1-3-4-5(2)6/h3-4H2,1-2H3 Y Key: XNLICIUVMPYHGG-UHFFFAOYSA-N Y InChI=1/C5H10O/c1-3-4-5(2)6/h3-4H2,1-2H3 Key: XNLICIUVMPYHGG-UHFFFAOYAJ
Properties
Molecular formula	C5H10O
Molar mass	86.13 g/mol
Appearance	Colorless liquid
Density	0.809 g/ml
Melting point	−78 °C, 195 K, -108 °F
Boiling point	101 - 105 °C
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

Pentan-2-one or 2-pentanone or methyl propyl ketone is a colorless liquid ketone with an odor resembling that of acetone. Its formula is C₅H₁₀O. It is sometimes used in very small amounts as a flavoring food additive. Two other ketones, 3-pentanone and methyl isopropyl ketone are isomers of 2-pentanone.