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[Chemical Knowledge]：Properties and Uses of Methane

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Methane is a colorless, odorless, flammable gas, is one of the important raw materials in the production of chemicals. The properties and uses of methane are described in detail below.

1. the nature of methane

1. Physical properties

methane is a colorless, odorless gas, molecular formula CH4, molecular weight of 16.04. Its boiling point is -161.5 ℃, the melting point is -182.5 ℃, the density is smaller than air, and it is difficult to dissolve in water.

2. Chemical properties

methane has high chemical stability, but some chemical reactions can still occur under certain conditions. The main reactions include combustion reaction and halogenation reaction. The combustion reaction refers to the reaction of methane and oxygen under ignition conditions to generate carbon dioxide and water; the halogenation reaction is the reaction of methane and halogen under illumination conditions to generate halogenated hydrocarbons.

2. Methane Use

1. As a fuel

Methane is a commonly used fuel with high calorific value and the advantages of clean and environmental protection. It is widely used in household, industrial and commercial fields, such as natural gas stoves, water heaters, power plants, etc.

2. as a chemical raw material

methane is also an important raw material for the production of many chemicals, through chemical reactions can be produced a series of organic compounds, such as methanol, formaldehyde, acetylene, benzene and so on. The further processing of these compounds can produce many important chemical products and materials, such as plastics, synthetic rubber, fibers, etc.

3. as a refrigerant

methane can be used as a refrigerant at ultra-low temperatures, such as liquefied natural gas (LNG) carriers and storage facilities commonly used methane as a refrigerant to maintain a low temperature state.

In short, methane has a wide range of applications in the field of chemical production raw materials, is an important gas raw materials.

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