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

Pure benzene refers to benzene with a purity higher than 99.9%. It is a colorless, transparent liquid with a special aromatic odor. Pure benzene is mainly used as a solvent, raw material, and intermediate, and has wide applications in many industries such as chemical industry, paint, rubber, plastics, etc. In contrast, hydrogenated benzene is a hydrogenation product of benzene, also known as cyclohexane. It is chemically represented as C6H12 and is a saturated cyclic alkane. Hydrogenated benzene has relatively few applications in the chemical industry and is mainly used as an additive and solvent for diesel fuel

Pure benzene and hydrogenated benzene have different physical properties. The melting point of pure benzene is 5.5 ℃, the boiling point is 80.1 ℃, and the density is 0.876 g/cm ³。 The melting point of hydrogenated benzene is 6.5 ℃, the boiling point is 81.3 ℃, and the density is 0.772 g/cm ³。 It can be seen that the melting and boiling points of hydrogenated benzene are slightly higher than those of pure benzene, while the density is lower. In addition, pure benzene is a liquid at room temperature, while hydrogenated benzene is a colorless gas

Once again, there are differences in the chemical properties between pure benzene and hydrogenated benzene. Pure benzene is a non flammable chemical substance, but it has strong solubility and is easily volatile. Hydrogenated benzene is more stable and less volatile compared to pure benzene due to its saturated carbon chain. In addition, pure benzene can undergo oxidation and halogenation reactions, while the chemical reactions of hydrogenated benzene are relatively rare

Pure benzene and hydrogenated benzene also differ in their uses. 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, due to its stability and low volatility, is mainly used as a diesel additive in the petrochemical industry

In summary, although pure benzene and hydrogenated benzene are derivatives of benzene, there are significant differences in their chemical composition, physical properties, chemical properties, and uses. Understanding these differences helps us better apply these two chemicals and avoid confusion in their use.