The propane is a linear Hydrocarbure saturated with the family of the Alcane S, of formula C₃H₈.

It is derived from other oil products by processes of oil or gas thermochemistry. It is usually used as chemical energy source by combustion in the internal combustion engines, barbecues and boilers.

Generally sold in the liquid state, in the form of LPG in particular (it is one of its principal components). An additive, the éthanethiol, is used like odorous announcing the possible escapes.

Properties

Propane is denser than the air (1,5 times) in the Normal conditions of temperature and of pressure, it thus forms pockets on the ground in a part filled with air. Liquid propane vaporizes in the air with the atmospheric pressure and often creates a Oxydation of the part due to the condensation of the steam, the phase shift being endothermic.

Propane is not toxic, but an asphyxiation by deprivation of oxygen is possible. However, conditionings of the trade include other hydrocarbons, which can increase the risk. With the relaxation or vaporization, a cold burn is also possible.

The combustion of propane is cleaner than that of the gasoline (thanks to his advantageous report/ratio H/C), but more polluting than for the Méthane and of course, than the Hydrogène. The presence of connections DC creates organic residues in addition to water and carbon dioxide. These products make the flame visible.

See too

External bonds

• European Information system of the chemical substances

• NIST Chemistry WebBook
• http://cfbp.fr]

Simple: Propane