Properties: This alkane is an organic compound with the formula C5H12. In a literal sense, pentane may refer to any of three structural isomers or a mixture of n-pentane, isopentane (methylbutane) and neopentane (dimethylpropane). It is a colorless, flammable, water-insoluble and volatile liquid that smells like gasoline. It is obtained from petroleum through distillation processes. The boiling points of pentane isomers range from about 9 to 36 °C. It has a molecular weight of 72.151 g/mol. It has a melting point of -201.6°F (-129.8°C). Pentane has a density of 626 kg/m³.