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[Chemical Knowledge]：Properties and Uses of n-Butane

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n-Butane is a common chemical raw material, which has many important properties and uses. The following is a detailed description of the properties and uses of n-butane.

1. The properties of n-butane

1. Physical properties
n-butane is a colorless, odorless, flammable gas with a molecular formula of C4H10. At normal temperature and pressure, n-butane is gaseous, the density is larger than air, and it is difficult to dissolve in water. Its boiling point is -0.5 ℃, critical temperature is 152.0 ℃, and critical pressure is 4.25MPa.

2. Chemical properties
the chemical properties of n-butane are relatively stable, but under certain conditions, substitution reactions, oxidation reactions, and cracking reactions can occur. The substitution reaction between n-butane and halogen can occur under the condition of illumination to generate the corresponding halogenated hydrocarbon. In addition, n-butane can also be burned in oxygen to produce carbon dioxide and water.

2. n-butane use

1. Chemical raw material
n-butane is an important chemical raw material, widely used in various chemical production. It can be used as a raw material for the production of ethylene, propylene, butadiene and other olefins, which are important monomers for the synthesis of plastics, synthetic rubber, synthetic fibers and other polymer compounds. In addition, n-butane can also be used for the production of butanol, butyric acid, butyraldehyde and other organic compounds.

2. Fuel
As a clean energy, n-butane is widely used in various fuel fields. It can be used as one of the main components of liquefied petroleum gas (LPG) for household cooking, heating and industrial heating. In addition, n-butane can also be used as flare fuel, internal combustion engine fuel, etc.

3. Refrigerant
n-Butane has a lower boiling point, so it can be used as a refrigerant. In some low temperature fields, such as refrigeration, refrigeration, air conditioning, etc., n-butane can be used as a refrigerant to reduce the temperature.

In short, n-butane, as a common raw material for chemical production, has a wide range of uses. In the future chemical production, with the continuous progress of technology and the expansion of application fields, the use of n-butane will be more extensive.

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