Cyclopentane

Cyclopentane (also called C pentane) has a chemical formula C₅H_10. It is usually formed by cracking cyclohexane in the presence of high temperature and pressure.^[4]

Cyclopentane

Names
Preferred IUPAC name Cyclopentane
Other names pentamethylene
Identifiers
CAS Number	287-92-3 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:23492 Y
ChemSpider	8896 Y
ECHA InfoCard	100.005.470
EC Number	206-016-6
PubChem CID	9253
RTECS number	GY2390000
UNII	T86PB90RNU Y
CompTox Dashboard (EPA)	DTXSID6024886
SMILES C1CCCC1
Properties
Chemical formula	C5H10
Molar mass	70.1 g/mol
Appearance	clear, colorless liquid
Odor	mild, sweet
Density	0.751 g/cm3
Melting point	−93.9 °C (−137.0 °F; 179.2 K)
Boiling point	49.2 °C (120.6 °F; 322.3 K)
Solubility in water	156 mg·l−1 (25 °C)[1]
Solubility	soluble in ethanol, acetone, ether
Vapor pressure	45 kPa (20 °C) [2]
Acidity (pKa)	~45
Magnetic susceptibility (χ)	-59.18·10−6 cm3/mol
Refractive index (nD)	1.4065
Hazards
Main hazards	Flammable[3]
NFPA 704	3 1 0
Explosive limits	1.1%-8.7%[3]
U.S. Permissible exposure limit (PEL)	none[3]
Related compounds
Related compounds	{{{value}}}
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