[Chemical Knowledge]：Industrial naphthalene properties, uses, upstream and downstream raw materials, storage methods, industrial naphthalene alias.

PROPERTIES OF INDUSTRIAL NAPHTHALENE

Industrial naphthalene is a white or light yellow solid with a strong aromatic odor. Its chemical formula is C10H8, which belongs to polycyclic aromatic hydrocarbons. Technical naphthalene has a relatively high melting and boiling point of 80.1°C and 218°C, respectively. Its molecular structure is formed by the fusion of two benzene rings, which has high stability and hydrophobicity. Industrial naphthalene is easily soluble in organic solvents such as ethanol, ether, chloroform, but its solubility in water is extremely low. This compound sublimates when heated, changing directly from a solid state to a gaseous state.

Industrial Naphthalene Uses

Industrial naphthalene is mainly used in the production of phthalic anhydride, which is an important raw material for the manufacture of plastics, resins, dyes and plasticizers. Phthalic anhydride is widely used in the chemical industry, such as polyester resins, alkyd resins and dye intermediates. Industrial naphthalene is also used in the production of naphthalene-based water reducers, which are concrete additives that can significantly improve the fluidity and strength of concrete. In the pharmaceutical industry, industrial naphthalene is used as an intermediate in the synthesis of some drugs. In agriculture, industrial naphthalene is used to make some insecticides and fungicides. Industrial naphthalene is also an important raw material in the production of dyes and pigments, providing a wide range of color options.

Industrial naphthalene upstream raw materials

The main upstream raw materials for industrial naphthalene are coal tar and petroleum, which extract naphthalene through high-temperature distillation and separation processes. Coal tar is a by-product in the coking process, which is rich in a variety of aromatic hydrocarbons, in which the content of naphthalene is relatively high. Naphthalene can also be obtained in the process of petroleum cracking. Coal tar and petroleum are distilled at high temperatures to extract naphthalene and further purify it. Some chemical synthesis methods can also be used to produce naphthalene, but are relatively rarely used.

Industrial naphthalene downstream products

The downstream products of industrial naphthalene mainly include phthalic anhydride, naphthalene water reducing agent, pesticide, dye and pigment. Phthalic anhydride is the most important downstream product used in the manufacture of a wide range of resins and plasticizers. Naphthalene water reducing agent is widely used in the construction industry, which can significantly improve the performance of concrete. Naphthyl-based insecticides and fungicides play an important role in agriculture and can effectively control pests and diseases. The dye and pigment industry uses the chemical properties of industrial naphthalene to produce a variety of colorful products, which are used in textiles, printing and other fields.

INDUSTRIAL NAPHTHALENE STORAGE METHOD

Due to the flammability and volatility of industrial naphthalene, its storage requires special attention to safety. Industrial naphthalene should be stored in a cool, ventilated and dry warehouse, away from fire, heat and direct sunlight. The storage area should be well ventilated to prevent the accumulation of naphthalene vapor. Industrial naphthalene should be placed in a sealed container to prevent moisture absorption and contamination. Containers shall be made of corrosion resistant material to prevent chemical reaction with naphthalene. During transportation, severe collision and vibration should be avoided to prevent leakage caused by package damage. The means of transport shall be equipped with fire fighting equipment, and the drivers and escorts shall be specially trained to be familiar with the emergency treatment measures.

Industrial Naphthalene Market Analysis

The global industrial naphthalene market demand is mainly driven by the chemical industry and the construction industry. With the development of economy, the demand of phthalic anhydride and naphthalene series water reducing agent is increasing, which directly promotes the market demand of industrial naphthalene. China is the largest producer and consumer of industrial naphthalene, and the market demand accounts for the main part of the global total demand. The European and North American markets also have greater demand, mainly for the production of high value-added products. With the increasingly stringent environmental regulations, the production and use of industrial naphthalene is facing more environmental pressure. Companies need to adopt cleaner production processes and more efficient waste gas treatment technologies to meet environmental requirements.

Environmental and Safety Considerations

During the production and use of industrial naphthalene, a certain amount of volatile organic compounds (VOCs) are produced, which are potentially harmful to the environment and human health. Therefore, enterprises need to strictly control exhaust emissions in the production process and adopt efficient exhaust gas treatment technologies, such as adsorption, condensation and combustion, to reduce VOCs emissions. Industrial naphthalene waste treatment also needs to meet environmental standards to prevent pollution of soil and water. Employees should wear protective equipment during operation to avoid skin contact and inhalation of naphthalene vapor to ensure safe operation.

future development trend

With the progress of science and technology and the enhancement of environmental awareness, the production process and application of industrial naphthalene will continue to innovate. In the future, the application of green chemical processes and renewable raw materials is expected to become an important direction for the development of the industry. By optimizing the production process, reduce energy consumption and pollution, improve product quality and production efficiency. The research and development of new naphthalene-based materials will also expand the application range of industrial naphthalene and bring new market opportunities. The industrial naphthalene industry will usher in more opportunities for innovation and development while maintaining traditional applications.

Conclusion

As an important chemical raw material, industrial naphthalene has been widely used in many industries. Its stable chemical properties and diverse uses make it a key component in chemical production. With the growth of market demand and the improvement of environmental protection requirements, the industrial naphthalene industry will face new challenges and opportunities. Enterprises need to constantly innovate and adopt more environmentally friendly and efficient production processes in order to maintain their advantages in the fierce market competition. In the future, industrial naphthalene has great development potential in the field of green chemical industry and new materials, and will continue to play an important role in the chemical industry.