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[Chemical Knowledge]：Properties and Uses of Crude Benzene

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Crude benzene is a common chemical production raw material, widely used in coking, petrochemical and other fields. This article will detail the nature and use of crude benzene.

1. the nature of crude benzene

crude benzene is a colorless, transparent, pungent odor liquid, insoluble in water, but can be miscible with many organic solvents. Its main component is benzene, but also contains toluene, xylene and other aromatic hydrocarbon compounds. The chemical properties of crude benzene are relatively stable, and it is not easy to undergo oxidation, reduction and other reactions, but under the conditions of high temperature, high pressure and the presence of catalysts, addition, substitution and other reactions can occur.

crude benzene is more toxic. Prolonged exposure to or inhalation of high concentrations of crude benzene vapor will cause harm to the human body, mainly manifested in the anesthetic effect on the central nervous system and the stimulation of the skin and mucous membranes. Therefore, strict attention should be paid to safety protection measures in the process of production and use.

2. the use of crude benzene

1. Coking industry

in the coking industry, crude benzene is mainly as one of the distillation products of coal tar, used to extract benzene, toluene, xylene and other aromatic hydrocarbon compounds. These compounds are important raw materials for the production of plastics, synthetic fibers, synthetic rubber and other chemical products.

2. Petrochemical industry

In the petrochemical industry, crude benzene can be used as raw material for dehydrogenation reaction to produce benzene and hydrogen. Benzene is an important raw material for the production of polymer compounds such as nylon and phenolic resins, while hydrogen can be used in other chemical processes such as hydrogenation reactions.

3. pharmaceutical, pesticide industry

crude benzene and its derivatives in the pharmaceutical, pesticide industry also has a wide range of applications. For example, some benzene derivatives can be used in the production of fungicides, herbicides and other pesticides, as well as some pharmaceutical intermediates.

In short, crude benzene, as an important raw material for chemical production, is widely used in coking, petrochemical, pharmaceutical, pesticide and other fields. It is necessary to pay attention to safety protection measures during use to avoid harm to the human body and the environment.

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