Butane

Butane is a saturated hydrocarbon, or aliphatic paraffinic, flammable gas that liquefies at atmospheric pressure of -0.5 degrees Celsius. It consists of four carbon atoms and ten hydrogen, chemical formula C4H10. The two isomers presents butane n-butane and isobutane or methylpropane.

Butane is a gas trade liquefied oil obtained by distillation, composed mainly of normal butane (60%), propane (9%), isobutane (30%) and ethane (1%).

The main application of butane gas is used as fuel in homes for cooking and hot water, and that due to limitations of transportation and storage is not usually consumed in large quantities.

Basic properties:
Properties Value
chemical formula C4H10
molecular weight 58.1222 g/mol
phase gas (at STP)
melting point -138.3 °C
boiling point -0.5 °C
density 0.00249343 g/cm3 (at 20 °C)
dielectric constant 1.00258

Gas properties:
Properties Value
density 0.00249343 g/cm3 (at 20 °C)
vapor density 2.11 (relative to air)
molar volume 23310.1 cm3/mol
surface tension 0.01487 N/m
refractive index 1.3326
dynamic viscosity 7×10-6 Pa s (at 25 °C)