| Cyclopentane | |
|---|---|
 |
 |
| IUPAC name | Cyclopentane |
| Other names | pentamethylene |
| Identifiers | |
| CAS number | |
| RTECS number | GY2390000 |
| SMILES | C1CCCC1 |
| Properties | |
| Molecular formula | C5H10 |
| Molar mass | 70.1 g/mol |
| Appearance | clear, colorless liquid |
| Density | 0.751 g/cm3 |
| Melting point |
−94 °C |
| Boiling point |
49 °C |
| Acidity (pKa) | ~45 |
| Related Compounds | |
| Related compounds | cyclopropane, cyclobutane, cyclohexane |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Cyclopentane is a highly flammable alicyclic hydrocarbon with chemical formula C5H10 and CAS number 287-92-3, consisting of a ring of five carbon atoms each bonded with two hydrogen atoms above and below the plane. It occurs as a colorless liquid with a petrol-like odor. Its melting point is −94 °C and its boiling point is 49 °C.
The typical structure of cyclopentane is the "envelope" conformation.
Cyclopentane is used in the manufacture of synthetic resins and rubber adhesives. The United States produces more than half a million kilograms of this chemical per year.
