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[Chemical Knowledge]：The main difference between pure benzene and hydrobenzene

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Pure benzene and hydrobenzene are two common chemical substances, which are widely used in chemical industry. Although they are all benzene ring structures, there are some differences in chemical composition and properties. This article will introduce the main differences between pure benzene and hydrobenzene to help readers better understand these two chemicals.

pure benzene refers to benzene having a purity higher than 99.9 percent. It is a colorless, transparent liquid with a special aromatic smell. Pure benzene is mainly used as solvent, raw material and intermediate, and is widely used in chemical industry, paint, rubber, plastic and many other industries. In contrast, hydrobenzene is the hydrogenation product of benzene, also known as cyclohexane. It is chemically denoted as C6H12 and is a saturated cycloalkane. Hydrobenzene has relatively few applications in the chemical industry and is mainly used as an additive and solvent for diesel fuel.

pure benzene and hydrobenzene differ in physical properties. Pure benzene has a melting point of 5.5°C, a boiling point of 80.1°C and a density of 0.876g/cm³. The melting point of hydrobenzene is 6.5 ℃, the boiling point is 81.3 ℃, and the density is 0.772g/cm³. It can be seen that the melting point and boiling point of hydrobenzene are slightly higher than that of pure benzene, and the density is lower. In addition, pure benzene is a liquid at normal temperature, while hydrobenzene is a colorless gas.

again, there are also differences in the chemistry of pure benzene and hydrobenzene. Pure benzene is a non-flammable chemical substance, but it has the characteristics of strong solubility and volatility. Hydrogenated benzene is more stable and less volatile than pure benzene due to its saturated carbon chain. In addition, pure benzene can be oxidized and halogenated, while hydrobenzene has relatively little chemical reaction.

pure benzene and hydrobenzene in the use of different. The main application areas of pure benzene include chemical, plastic, paint, rubber and other industries. For example, in the plastic manufacturing process, pure benzene can be used as a raw material for polystyrene (PS). Hydrogenated benzene is mainly used as a diesel additive in the petrochemical industry due to its stability and low volatility.

In short, although pure benzene and hydrobenzene are derivatives of benzene, there are obvious differences in chemical composition, physical properties, chemical properties and uses. Understanding these differences helps us to better apply the two chemicals and avoid confusing uses.

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