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[Chemical Knowledge]：Properties and Uses of Adipic Acid

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Adipic acid is an important organic chemical raw material, which is widely used in the field of chemical production. This article will detail the properties and uses of adipic acid.

1. the nature of adipic acid

adipic acid is a colorless crystal or white powder, molecular formula is C6H10O4, molecular weight is 146.14. It has a strong pungent odor and is easily soluble in organic solvents such as water, ethanol and ether. Adipic acid has strong acidity and can react with alkali to form salts. In addition, it also has good thermal stability and can be processed and processed at high temperatures.

2. adipic acid use

1. production of nylon
adipic acid is one of the important raw materials for the production of nylon, and caprolactam polycondensation polyamide chip, can be further processed into fiber, engineering plastics, film and other products. Nylon has good mechanical properties, heat resistance, wear resistance, chemical resistance and other advantages, widely used in textiles, automobiles, electronics, aerospace and other fields.
2. Production of plasticizer
Adipic acid can be used as a raw material for the production of plasticizers, and it reacts with phthalic anhydride to generate dioctyl adipate (DOA), which is a commonly used plasticizer. It can be used in the processing of PVC and other plastics to improve its flexibility, processability and cold resistance.
3. The production of unsaturated polyester resin
adipic acid can react with ethylene glycol and other raw materials to generate unsaturated polyester resin. This resin has good mechanical properties, chemical resistance and insulation, and can be used in FRP products, coatings, adhesives and other fields.

3. adipic acid production process

adipic acid production process mainly phenol method, cyclohexane method and nitro method. Among them, the phenol method is the main production process used at home and abroad, the process uses phenol as raw material, through oxidation, cracking, crystallization and other steps to produce adipic acid.

4. market prospects

With the continuous development of the chemical industry at home and abroad, the market demand for adipic acid is also increasing. In the future, with the continuous development of nylon, plasticizer and other industries, the market prospect of adipic acid will be broader.

In conclusion, adipic acid, as an important organic chemical raw material, has a wide range of applications in the field of chemical production. Understanding the properties and uses of adipic acid can better grasp the market opportunities, expand the application field, and promote the sustainable development of the chemical industry.

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