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[Chemical Knowledge]：Properties and Uses of Heavy Benzene

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Heavy benzene is a common chemical raw material, which has many important properties and uses. This paper will introduce the properties, production methods, quality standards, safety and main uses of heavy benzene in detail.

1. the nature of heavy benzene

heavy benzene is a colorless, transparent, aromatic smell of liquid, insoluble in water, but miscible with many organic solvents. Its main component is a mixture of benzene and toluene, containing a small amount of xylene and other aromatic hydrocarbon compounds. Heavy benzene has high boiling point and density, good chemical stability and thermal stability, and can maintain stability under high temperature and high pressure.

2. heavy benzene production method

heavy benzene production method mainly has two kinds: one kind is obtained by petroleum cracking light hydrocarbon mixture for separation and purification, the other is obtained by coal tar distillation. Among them, the petroleum cracking method is the main production method at present, which obtains high-quality heavy benzene products by separating and refining light hydrocarbon mixtures.

3. the quality standard of heavy benzene

the quality standard of heavy benzene mainly includes purity, sulfur content, acidity, moisture and other indicators. Among them, the purity is an important index to measure the quality of heavy benzene, which is generally required to be above 99.5%. Sulfur content and acidity affect the odor and corrosiveness of heavy benzene, so it also needs to be strictly controlled. Moisture, on the other hand, affects the stability and storage life of heavy benzene and needs to be reduced as much as possible.

4. the safety
of
heavy benzene has certain toxicity and flammability, so strict safety measures are needed to ensure the safety of the production and use process. In the production process, it is necessary to adopt closed production equipment and strict ventilation measures to avoid heavy benzene leakage and accumulation. During use, it is necessary to pay attention to the safety of storage and transportation, and avoid contact with open flames and high temperature environments.

5. the main use of heavy benzene

of heavy benzene in the chemical industry has a wide range of applications, mainly used as solvents, fuels and chemical raw materials. Specifically, heavy benzene can be used as:

1. Solvent: Heavy benzene has good solubility and can be used as a solvent for many organic compounds, such as paint, ink, rubber, etc.

2. Fuel: Heavy benzene has high calorific value and combustion performance, and can be used as fuel, such as boiler fuel, heating furnace fuel, etc.

3. chemical raw materials: heavy benzene can be used as raw materials for many chemical products, such as aniline, benzoic acid, phenol and so on.

In short, heavy benzene as a common chemical production raw materials, has a wide range of uses and important application value. It is necessary to pay attention to safety during use, strictly abide by relevant laws and regulations, and ensure the safety and reliability of the production and use process.

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