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[Chemical Knowledge]：Properties and Uses of Stearic Acid

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Stearic acid in the field of chemical production of raw materials in the nature and use of

1. Introduction

Stearic acid is a widely used chemical production of raw materials, which in many areas have important applications. As a saturated fatty acid, stearic acid has unique chemical and physical properties, which make it play an important role in the production process. This paper will discuss in detail the properties of stearic acid and its use in the field of raw materials for chemical production.

2. the nature of stearic acid

1. chemical properties: stearic acid is a carboxylic acid, its molecular formula is C18H36O2, structural formula CH3(CH2)16COOH. It has the acidity of a carboxyl group and can react with a base to form a salt. In addition, stearic acid can also occur esterification, amidation and other reactions.
2. Physical Properties: Stearic acid is a white or slightly yellow waxy solid with a high melting point of about 69-70 ℃. It is insoluble in water, but soluble in hot ethanol, ether, chloroform and other organic solvents.

3. the use of stearic acid

in the field of chemical production raw materials, stearic acid has a wide range of uses, the following is its main application:

1. plastic additives: stearic acid can be used as plastic additives, used to improve the processing performance and use performance of plastics. It can improve the fluidity of the plastic, prevent the adhesion of the plastic during processing, and also improve the heat resistance and cold resistance of the plastic.
2. Rubber additives: Stearic acid can be used as a rubber additive to adjust the vulcanization speed of rubber and improve the processing and mechanical properties of rubber. In addition, stearic acid can also improve the oil resistance, oxidation resistance and weather resistance of rubber.
3. Surfactant: Stearic acid can be used as a surfactant raw material for the production of stearic acid salts, stearic acid esters and other surfactants. These surfactants have good wetting, emulsifying and dispersing properties, and are widely used in washing, textile, cosmetics and other fields.
4. oil chemical raw materials: stearic acid can be used as oil chemical raw materials, used in the production of stearic acid ester, stearic acid glycerol ester and other oil chemicals. These products are widely used in food, medicine, cosmetics and other fields.

4. conclusion

In conclusion, stearic acid as an important raw material for chemical production has a wide range of applications in the fields of plastics, rubber, surfactants, oil chemical industry and so on. Its unique chemical and physical properties make it play an important role in the production process. With the continuous development of science and technology, the application field of stearic acid will continue to expand, and make greater contributions to the development of the chemical industry.

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