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[Chemical Knowledge]：Properties and Uses of Aniline

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Aniline is an important organic chemical raw material, widely used in medicine, pesticides, dyes, rubber, plastics and other fields. This article will detail the properties and uses of aniline.

1. the nature of aniline

aniline is a colorless or slightly yellow oily liquid with a special pungent odor. It is insoluble in water, but soluble in alcohol, ether, acid and other organic solvents. Aniline has a boiling point of 184°C, a melting point of -6.3°C and a flash point of 71°C. Aniline is basic and can react with acids to form salts. In addition, aniline is also reductive and is easily oxidized to produce nigrosine or other oxides.

2. the use of aniline

1. medical field

aniline in the field of medicine has a wide range of applications, can be used for the synthesis of many drugs, such as anticancer drugs, antibacterial drugs, anti-inflammatory drugs. For example, aniline reacts with acetic anhydride to form acetanilide, which is a commonly used antipyretic analgesic.

2. Pesticide field

Aniline can also be used to synthesize pesticides, such as insecticides, fungicides, herbicides, etc. For example, aniline formaldehyde resin formed by the reaction of aniline and formaldehyde is a common insecticide.

3.

in the field of dyes Aniline can be used as a dye intermediate for the synthesis of various dyes, such as acid dyes, direct dyes, disperse dyes, etc. These dyes are widely used in textile, printing and dyeing, leather and other industries.

4.

in rubber field Aniline can be used as rubber antioxidant to improve the heat resistance, oxidation resistance, oil resistance and other properties of rubber products. At the same time, aniline can also be used to synthesize rubber accelerators to improve the processability of rubber.

5.

in the field of plastics Aniline can be used to synthesize plastic additives, such as plasticizers, flame retardants, antioxidants, etc. These additives can improve the performance and stability of plastic products.

In short, aniline as an important organic chemical raw material, has a wide range of applications in the fields of medicine, pesticides, dyes, rubber, plastics and so on. Understanding the properties and uses of aniline will help us make better use of this raw material and promote the development of the chemical industry.

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