[Chemical Knowledge]：Properties, uses, upstream and downstream raw materials and storage methods of cyclohexanone

Cyclohexanone properties

Cyclohexanone (C≡H≡O) is an organic compound that has the appearance of a transparent colorless liquid with a slight mint odor. It has a molecular weight of 98.15g/mol, a melting point of -31°C, a boiling point of 155.65°C, and a density of 0.947g/cm³(20°C). Cyclohexanone is a medium polar solvent with good solubility and can dissolve a variety of organic substances. In terms of chemical properties, cyclohexanone has the typical characteristics of ketones, such as easy addition reaction, oxidation reduction reaction and condensation reaction. These characteristics make it widely used in industry.

Cyclohexanone use

Cyclohexanone is widely used in the chemical industry, the most important use is as an intermediate of nylon 6 and nylon 66. It plays a key role in the production of caprolactam and adipic acid, both of which are important monomers in the manufacture of nylon. Cyclohexanone is also used in the pesticide, pharmaceutical and coatings industries as a solvent and intermediate. It acts as a solvent and a reaction medium in the production of pesticides such as pesticides and herbicides. In the pharmaceutical field, cyclohexanone is used to synthesize a variety of pharmaceutical intermediates, such as epichlorohydrin. In the paint and resin industry, cyclohexanone as a solvent, has good solubility and volatility, making it an excellent coating solvent.

Cyclohexanone upstream feedstock

There are two main processes for the production of cyclohexanone: benzene hydrogenation and cyclohexane oxidation. Benzene hydrogenation is carried out by hydrogenation of benzene in the presence of nickel or palladium catalyst to produce cyclohexane, and then by dehydrogenation oxidation to produce cyclohexanone. This method has lower cost and more mature process. The law of cyclohexane oxidation is that cyclohexane is directly oxidized under the action of cobalt or manganese catalyst to generate a mixture of cyclohexanone and cyclohexanol, and then cyclohexanone is obtained by separation. Both processes rely on upstream petrochemicals such as benzene and cyclohexane, so the production of cyclohexanone is closely related to the petrochemical industry.

Cyclohexanone downstream products

The main downstream products of cyclohexanone include caprolactam and adipic acid, which are key monomers for the synthesis of nylon 6 and nylon 66. Caprolactam is obtained by cyclization of cyclohexanone under the action of ammonia, while adipic acid is produced by oxidation of cyclohexanone in the presence of nitric acid. In addition to nylon monomer, cyclohexanone is also used in the production of downstream products such as pesticides, pharmaceuticals and coatings. For example, in the pesticide industry, cyclohexanone is used as a solvent and intermediate to produce a variety of pesticide compounds; in the pharmaceutical field, cyclohexanone is used to synthesize antibiotics and other pharmaceutical intermediates; in the paint and resin industry, cyclohexanone is used as a solvent to improve the performance of coatings.

Cyclohexanone storage method

Storage of cyclohexanone requires special care because of its flammability and volatility. When storing cyclohexanone, a cool, well-ventilated warehouse should be selected to avoid direct sunlight and high temperature environment. Storage containers should be well sealed, usually steel drums or galvanized iron drums for storage, to ensure that the container is leak-free. Keep away from fire sources, heat sources and oxidants to prevent fire and explosion accidents. The warehouse should be equipped with appropriate fire fighting equipment, such as fire extinguishers, fire hydrants, etc., to deal with sudden fire. In order to ensure safety, operators should wear protective equipment, such as gloves, protective glasses and protective clothing, to prevent skin and eye irritation and damage from cyclohexanone.

Cyclohexanone Market and Development Prospects

As an important chemical intermediate, the market demand of cyclohexanone mainly comes from the growth of nylon industry. With the increase in global demand for textile and engineering plastics, the demand for nylon products has steadily increased, driving the development of the cyclohexanone market. Especially in developing countries such as China and India, the accelerated industrialization process has driven the demand for nylon and related chemical products. The strengthening of environmental policies has also prompted companies to adopt more environmentally friendly cyclohexanone production processes, such as benzene hydrogenation. With technological advances, the efficiency and safety of cyclohexanone production continue to improve, further promoting the expansion of its market.

Cyclohexanone Environmental Protection and Safety

In the production and use of cyclohexanone process, environmental protection and safety issues can not be ignored. Cyclohexanone is a volatile organic compound, which is harmful to the environment and human health. Therefore, in the production process, effective waste gas treatment measures should be taken to reduce the emission of cyclohexanone. Production enterprises should strengthen wastewater treatment to prevent cyclohexanone from entering the water body and causing pollution. When using cyclohexanone, protective measures should be taken to prevent inhalation of its vapor or contact with skin. When producing and storing cyclohexanone, the safety operation regulations should be strictly observed to prevent the occurrence of fire and explosion accidents.

Conclusion

As an important chemical intermediate, cyclohexanone has a wide range of uses and good market prospects. Its production and application involve many fields, including nylon manufacturing, pesticides, pharmaceuticals and coatings. The production of cyclohexanone depends on upstream petrochemical products, and the production processes are mainly benzene hydrogenation and cyclohexane oxidation. The storage of cyclohexanone requires special attention to safety measures to prevent fire and explosion accidents. With the growth of global demand for nylon products and the strengthening of environmental protection policies, the market prospect of cyclohexanone will be broader. Environmental and safety issues need to be taken seriously in the production and use process to ensure sustainable development.