[Chemical Knowledge]：What is acetylene?

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Acetylene is a colorless, volatile, irritating gas with high combustion and explosive properties. Its chemical formula is C2H2, and its structural formula is a trilinear structure, that is, two carbon atoms are directly bonded by a triple bond, and each carbon atom is connected to a hydrogen atom.

acetylene was first produced by British chemist Edward Frankland in {\color{red}{1862}} by heating a heavy hydrogenated ethylene monobody. The preparation methods of acetylene mainly include electric torch oxyacetylene method, calcium carbon method, canned scrap iron method, etc.

as an important chemical raw material, acetylene has a wide range of applications. Acetylene is a high-quality industrial fuel, which is widely used in various fields because of its high calorific value and rapid combustion. Acetylene can be used as an intermediate in the manufacture of synthetic rubber, plastics and fiber raw materials. In addition, acetylene and oxygen can also generate acetylene welding, used in metal processing welding and cutting. Acetylene also has certain applications in the medical field, and can be used to supply a mixture of oxygen and helium to patients for anesthesia and hemostasis during surgery.

However, acetylene is also dangerous. Acetylene is a flammable gas, once leaked or improperly used, it is easy to cause fire or explosion. In addition, acetylene is also a toxic gas, long-term exposure to acetylene environment will have adverse effects on the human body, such as drowsiness, dizziness, nausea and so on.

To sum up, acetylene, as an important chemical raw material, has a wide range of applications, but also need to pay attention to its risk. In order to use and store acetylene safely, relevant standards and specifications should be strictly observed, safety awareness and skills training should be strengthened to ensure the normal production and use of acetylene.

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