Piperidine

Piperidine
Names
	IUPAC name Piperidine
	Preferred IUPAC name Piperidine
	Other names Hexahydropyridine; Azacyclohexane; Pentamethyleneamine; Azinane
Identifiers
CAS Number	110-89-4 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:18049 ;
ChEMBL	ChEMBL15487 ;
ChemSpider	7791 ;
ECHA InfoCard	100.003.467
EC Number	203-813-0;
IUPHAR/BPS	5477;
KEGG	C01746;
PubChem CID	8082;
RTECS number	TM3500000;
UNII	67I85E138Y ;
UN number	2401
CompTox Dashboard (EPA)	DTXSID6021165 ;
	InChI InChI=1S/C5H11N/c1-2-4-6-5-3-1/h6H,1-5H2 Key: NQRYJNQNLNOLGT-UHFFFAOYSA-N ; InChI=1/C5H11N/c1-2-4-6-5-3-1/h6H,1-5H2; InChI=1/C5H11N/c1-2-4-6-5-3-1/h6H,1-5H2 Key: NQRYJNQNLNOLGT-UHFFFAOYAY;
	SMILES C1CCNCC1;
Properties
Chemical formula	C5H11N
Molar mass	85.150 g·mol−1
Appearance	Colorless liquid
Odor	Semen-like, fishy-ammoniacal, pungent
Density	0.862 g/mL
Melting point	−7 °C (19 °F; 266 K)
Boiling point	106 °C (223 °F; 379 K)
Solubility in water	Miscible
Acidity (pKa)	11.22 (protonated)
Magnetic susceptibility (χ)	−64.2·10−6 cm3/mol
Viscosity	1.573 cP at 25 °C
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H311, H314, H331
Precautionary statements	P210, P233, P240, P241, P242, P243, P260, P261, P264, P271, P280, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P311, P312, P321, P322, P361, P363, P370+P378, P403+P233, P403+P235, P405, P501
NFPA 704 (fire diamond)	3 3 0
Safety data sheet (SDS)	MSDS1
Legal status	BR: Class D1 (Drug precursors);
Related compounds
Related compounds	Pyridine; Pyrrolidine; Piperazine; Phosphorinane; Arsinane
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Piperidine is an organic compound with the molecular formula (CH₂)₅NH. This heterocyclic amine consists of a six-membered ring containing five methylene bridges (–CH₂–) and one amine bridge (–NH–). It is a colorless liquid with an odor described as objectionable, typical of amines. The name comes from the genus name Piper, which is the Latin word for pepper. Although piperidine is a common organic compound, it is best known as a representative structure element within many pharmaceuticals and alkaloids, such as natural-occurring solenopsins.