Chemistry:2-Piperidinone

2-Piperidinone

Names
Preferred IUPAC name Piperidin-2-one
Other names δ-Valerolactam 2-Piperidinone 2-Piperidone
Identifiers
CAS Number	675-20-7 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:77761 Y
ChemSpider	12144
PubChem CID	12665
UNII	WLN0GQQ6EK Y
InChI InChI=1S/C5H9NO/c7-5-3-1-2-4-6-5/h1-4H2,(H,6,7) Key: XUWHAWMETYGRKB-UHFFFAOYSA-N InChI=1/C5H9NO/c7-5-3-1-2-4-6-5/h1-4H2,(H,6,7) Key: XUWHAWMETYGRKB-UHFFFAOYAE
SMILES O=C1NCCCC1
Properties
Chemical formula	C5H9NO
Molar mass	99.133 g·mol−1
Density	1.073 g/cm3
Melting point	38 to 40 °C (100 to 104 °F; 311 to 313 K)
Boiling point	256 °C (493 °F; 529 K)
Solubility in water	291 g/L
Hazards
Safety data sheet	MSDS
Flash point	> 110 °C (230 °F; 383 K)
Related compounds
Related compounds	4-Piperidinone
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Tracking categories (test):

• SizeSet

2-Piperidinone (2-piperidone or δ-valerolactam) is a chemical compound classified as a lactam. It is the monomer of Nylon 5, a polyamide. It is used as an intermediate in the preparation of other chemicals.