Introduction:

Butane is a hydrocarbon with the molecular formula C4H10, which stands for carbon, hydrogen, and oxygen. It is an alkane and can be found in a gaseous state at room temperature because of its high boiling point. Edward Frankland, a British chemist who worked in the field, made the discovery in 1849. However, Edmund Ronalds, an English industrial chemist, was the first to describe the substance’s many characteristics. He discovered butane in the crude petroleum and conducted research into its properties.

In other words, butane is a member of the paraffin hydrocarbon series (also known as the alkane series), which contains four carbon atoms and ten hydrogen atoms, and it belongs to the alkane series. Butane is classified as a saturated hydrocarbon because single bonds can be found between all of the carbon atoms in the compound.

Butane Structure 

The molecular formula of butane is C4H10. Its IUPAC name is butane. In the word butane, prefix ‘But’ stands for 4 carbon atoms present in butane and suffix ‘ane’ comes from the alkane series which represent that butane belongs from alkane homologous series and is saturated in nature. Butane can be easily represented by the general formula of alkanes which is CnH2n+2 where n = any positive integer or number of carbon atoms. For butane n = 4, on putting the value of ‘n’ in the general formula C4H2.4+2 = C4H10. Thus, butane is a saturated hydrocarbon (single bond between carbon atoms) with four carbon atoms and ten hydrogen atoms. Therefore, its structure will be as follows –

 Butane or n-butane has a linear chain structure and covalent bonds between C – C and C – H. Each carbon atom has 4 sigma bonds. So, each carbon atom is sp3 hybridized and has a tetrahedral shape. 

Properties of Butane 

The following are some of the physical characteristics of butane:

  • A molecular formula of C4H10 and an empirical formula of C2H5 have been determined.
  • The boiling point of butane is between -1 and 1°C.
  • It has a high flammability.
  • At normal room temperature and atmospheric pressure, it is a gas.
  • It is a colourless gas with an odour that is similar to gasoline.

It is easily liquified at room temperature, and liquified butane gas can be easily converted to vapour at the same temperature.

  • Butane has a molar mass of 58.124 grams per mol.
  • At 15°C, it has a density of 2.48kg/m3.
  • It is extremely poorly soluble in water. At 68°F, it dissolves in water with a solubility of 61 mg per litre.

Chemical Properties of Butane 

Few chemical properties of butane are listed below 

  • Reaction with oxygen – Butane reacts with oxygen and forms carbon dioxide and water vapor. Reaction is given below –
  • If the amount of oxygen is limited, then it forms carbon monoxide and water vapor. Reaction is given below – 
  • Reaction with chlorine – Butane reacts with chlorine and forms butyl chloride and HCl. Reaction is given below –
  • Reaction with iodine – Butane reacts with iodine and forms 2-iodobutane and hydrogen iodide. Reaction is given below –

Production of Butane 

Butane is a fossil fuel that is naturally produced by the decaying remains of plants and animals deep within the earth’s crust. Natural gas can be found deep within the earth as a source of energy. Butane is produced through the fractional distillation of crude oil. We also obtain a variety of other products as a result of this process, such as kerosene, diesel, heavy gas oil, and so on.

It is the process of separating various components of a liquid mixture according to their different boiling points, which is carried out with the help of a fractionating column. The process of fractional distilling crude oil is referred to as petroleum refining.

Uses of Butane 

Butane is a fossil fuel that can be used in a variety of applications. A few of its applications are listed in the following section.

  • It is widely used as a fuel for a variety of applications.
  • It is one of the elements that make up LPG (Liquified petroleum gas).
  • It is employed in the blending of gasoline.
  • It is an important raw material in the production of synthetic rubber.
  • Isobutane is a fuel that is used in refineries.
  • It is employed in the process of steam cracking.
  • It is a propellant that is used in deodorants and aerosol sprays, among other things.
  • It is used as a fuel in cigarette lighters and other similar devices.
  • Its isomer, butane, is used in the production of refrigerants.
  • It is also employed in the production of air conditioning systems.
  • It can also be used as a fuel for a butane torch, as previously stated.
  • It is used as a fuel in camping stoves, barbecues, and other similar devices. Butane transportation, on the other hand, must be done with extreme caution.
  • Butane does not contribute to global warming and does not emit smoke when burned. It has no effect on the ozone layer of the atmosphere either, as previously stated. As a result, we can say that butane is a gas or fuel that is friendly to the environment.

Conclusion:

Butane is primarily used as a gasoline mixture, either alone or in a propane mixture, and as a feedstock for ethylene and butadiene production, Butane like propane comes from natural gas or petroleum refineries and the two gases are usually found together. The butane is stored under pressure as a liquid. When the curler is switched on, butane is released and changes to a gas.