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[Chemical Knowledge]：Properties and uses of calcium carbide

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Calcium carbide is an important raw material for chemical production, and its properties and uses are very extensive. This article will detail the nature of calcium carbide, production methods, uses and safety aspects of the content. The properties of

1. calcium carbide

calcium carbide, also known as calcium carbide, is an inorganic compound with the chemical formula CaC2. It is a yellow or brown lumpy solid with a strong pungent odor. The melting point of calcium carbide is about 2300 ℃, the boiling point is about 2600 ℃, with high thermal stability. Calcium carbide in water will quickly react to generate acetylene gas and calcium hydroxide, while releasing a lot of heat. In addition, calcium carbide also has flammable, explosive, toxic and other characteristics, so special attention should be paid to safety during storage and use. The production method of

2. calcium carbide The production of

calcium carbide mainly adopts the method of electric furnace smelting of calcium oxide and coke at high temperature. In this process, the calcium oxide reacts with the coke to form calcium carbide and carbon monoxide. The reaction equation is: CaO 3C → CaC2 CO. The produced calcium carbide can be obtained after cooling, crushing, screening and other processes.

3. calcium carbide uses

1. production of acetylene gas: calcium carbide reacts with water to produce acetylene gas, so it can be used to produce acetylene gas. Acetylene gas is an important industrial raw material, which can be used in welding, cutting, lighting and other fields.
2. Organic synthesis: calcium carbide can be used as a raw material to participate in organic synthesis reactions to generate a series of organic compounds, such as ethanol, acetic acid, acetaldehyde, etc.
3. Production of vinyl chloride: calcium carbide reacts with chlorine to produce vinyl chloride, which is an important raw material for the production of polyvinyl chloride (PVC).
4. Production of metal calcium: calcium carbide can be used as a raw material for the production of metal calcium, and calcium carbide is decomposed into calcium and carbon by electrolysis.

4. safety
of calcium carbide
Because calcium carbide has flammable, explosive, toxic and other characteristics, it is necessary to strictly abide by safety operation procedures during production, transportation, storage and use to ensure safe production. In addition, calcium carbide reacts quickly when it meets water, generating a lot of heat and acetylene gas, so special attention should be paid to waterproof and moisture-proof.

In short, calcium carbide as an important chemical production raw materials, in various fields have a wide range of applications. Understanding and mastering the nature, production methods, uses and safety of calcium carbide is of great significance for improving the production efficiency of chemical products and ensuring production safety.

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