Q:

The difference between pure benzene and hydrobenzene

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A:
Benzene (Benzene) is an important organic chemical substance, which is widely used in chemical, textile, pharmaceutical and other industries. In practical applications, benzene usually exists in two forms: pure benzene and hydrobenzene. Although they are all called benzene, there are significant differences in their chemical properties, physical properties, and practical applications. The following will analyze the difference between pure benzene and hydrobenzene in detail from several aspects.

1. pure benzene characteristics

1. Definitions and Sources

Pure benzene, also known as industrial benzene, is a colorless liquid obtained by dehydrogenation of liquefied petroleum gas as raw material. It is a colorless liquid at room temperature, tasteless and odorless, with a high degree of incombustibility.

2. Physical and chemical properties

Pure benzene has the following significant physical and chemical properties:

  • Density: Pure benzene has a density of 0.8765g/cm³ at room temperature, which is lighter than water, so it is easy to transport and store.
  • Solubility: Pure benzene is insoluble in water, but in organic solvents with good solubility.
  • Volatile: pure benzene has a strong volatile, prone to evaporation phenomenon.

  1. Industrial Applications

Pure benzene has important application value in chemical industry. It is commonly used in the production of phenol, benzoic acid and other downstream products. Pure benzene is also used as a solvent, catalyst and raw material for the synthesis of organic compounds.

4. Safety and environmental impact

Pure benzene has strong toxicity, once leakage or leakage, it may cause serious harm to human body and environment. Therefore, in the use and storage of pure benzene must strictly adhere to the safety procedures.

2. Hydrogenated Benzene Characteristics

1. Definitions and Sources

Hydrogenated benzene, also known as phenol (Phenol), is a white solid obtained by the hydrogenation reaction of pure benzene under high pressure and high temperature conditions. Hydrogenated benzene has an aromatic odor and is a non-toxic substance.

2. Physical and chemical properties

Hydrogenated benzene has the following significant physical and chemical properties:

  • Density: Hydrogenated benzene has a density of 1.23g/cm³, which is higher than pure benzene.
  • Solubility: Hydrobenzene in water slightly soluble in organic solvents with good solubility.
  • Volatility: Hydrobenzene volatility is low, is a relatively stable material.

  1. Industrial Applications

Hydrogenated benzene has important applications in several industrial fields:

  • Pharmaceutical industry: Hydrogenated benzene is used to make pharmaceutical intermediates.
  • Food industry: Hydrogenated benzene is commonly used in food additives, with anti-corrosion and anti-oxidation effects.
  • Cosmetics: Hydrogenated benzene is also used in cosmetics manufacturing, with a certain fragrance and antiseptic effect.

4. Safety and environmental impact

Hydrogenated benzene itself is non-toxic, but because it is easy to react with certain chemical substances, it is still necessary to pay attention to the operating specifications when used. Compared with pure benzene, hydrobenzene has less impact on the environment.

3. pure benzene and hydrogenated benzene difference summary

1. Chemical nature difference

The chemical properties of pure benzene and hydrobenzene are significantly different. Pure benzene is flammable and toxic, while hydrobenzene is non-toxic and more stable.

2. Physical property difference

From the point of view of physical properties, pure benzene and hydrobenzene have obvious differences in density, solubility and volatility. Pure benzene is less dense and more volatile, whereas hydrobenzenes are more dense and less volatile.

  1. Application areas are different

Pure benzene is mainly used in industrial production, especially in the environment of high temperature and high pressure, while hydrobenzene is widely used in medicine, food and cosmetics.

4. Safety comparison

Pure benzene has strong toxicity, and special attention should be paid to safety during use and storage; while hydrobenzene itself is non-toxic and relatively safe to use.

4. conclusion

As two forms of benzene, pure benzene and hydrobenzene have different characteristics and application value in industrial production and environmental protection. Which form to choose depends on the specific use of the scene and process requirements. Understanding the difference between the two can help to better utilize the properties of benzene while reducing the negative impact on the environment.

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