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Adipic acid is an important organic chemical raw material, which is widely used in the production of plastics, fibers, rubber and other polymer materials. This article will detail the properties and uses of adipic acid.
1. adipic acid properties
1. physical properties
adipic acid is a colorless crystal, with a strong pungent odor. It can be soluble in water, ethanol, ether and other organic solvents, but insoluble in petroleum ether. Adipic acid has a high melting point of 152-153 ℃, a boiling point of 337.5 ℃, and a relative density of 1.360.
2. Chemical Properties
adipic acid has a carboxyl functional group and therefore has the general properties of a carboxylic acid. It can react with alcohols to form esters, react with amines to form amides, and can also undergo dehydration reactions to form anhydrides.
In addition, adipic acid has some special chemical properties. For example, it can react with diols to form polyesters and with diamines to form polyamides, which have a wide range of applications in industrial production.
2. the use of adipic acid
1. the production of plastic
acid can be used to produce a variety of plastic materials, such as polyester, polyamide and so on. Polyester is a polymer obtained by the reaction of adipic acid and diol. It has the advantages of high strength, high toughness, and chemical resistance. It is widely used in the production of beverage bottles, films, fibers, etc.
polyamides are polymers resulting from the reaction of adipic acid and diamines, also known as nylons. It has excellent mechanical properties, heat resistance and wear resistance, and is widely used in the production of auto parts, wires and cables, pipes, etc.
2. Production of fiber
Adipic acid can be used in the production of synthetic fibers, such as polyester, nylon and so on. Polyester is made of polyester fiber, with high strength, high elasticity, wear resistance and other advantages, widely used in the production of clothing, bedding and so on. Nylon is made of polyamide fiber, also has excellent mechanical properties and heat resistance, used to make sportswear, outdoor clothing and so on.
3. Production of rubber
Adipic acid can be used to produce rubber materials, such as polyester rubber, polyamide rubber, etc. These rubber materials have excellent oil resistance, acid and alkali resistance, heat resistance and other properties, and are widely used in the production of seals, transmission belts, tires, etc.
4. Other uses
In addition to the above several uses, adipic acid can also be used in the production of plasticizers, lubricants, dyes and other chemical products.
In conclusion, adipic acid, as an important organic chemical raw material, has a wide range of applications in the field of chemical production raw materials.