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[Chemical Knowledge]：Properties and Uses of Diethanolamine

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Diethanolamine (DEA) is an organic compound, which is widely used in the field of chemical production raw materials. It has unique properties and uses, becoming a key component in many chemical reactions and industrial processes. This article will detail the properties and uses of diethanolamine.

1. diethanolamine properties

1. physical properties
diethanolamine is a colorless to slightly yellow transparent liquid, with ammonia smell. Its molecular formula is C4H11NO2 and its molecular weight is 105.14. Diethanolamine is miscible with water, ethanol and acetone, but insoluble in ether and benzene. It has a melting point of -10°C, a boiling point of 268°C and a flash point of 137°C.

2. Chemical properties
diethanolamine is alkaline and can react with acid to form salt. It also has the characteristics of primary and secondary amines, and can participate in a variety of chemical reactions, such as alkylation, acylation, sulfonation, etc. In addition, diethanolamine is also reductive and can be oxidized to produce the corresponding aldehydes and acids.

2. the use of diethanolamine

1. gas purification agent
diethanolamine can be used as a gas purification agent for the removal of acid gases, such as hydrogen sulfide, carbon dioxide and so on. In industrial processes, diethanolamine is removed from gas streams by reaction with acid gases, thereby purifying gases.

2. Corrosion inhibitor
diethanolamine can be used as a corrosion inhibitor to protect metal equipment from corrosion. It forms a protective film with the metal surface to slow down the corrosion rate of the metal.

3. Emulsifier
diethanolamine can be used as an emulsifier to improve the stability of oil-water mixture. It reduces the oil-water interfacial tension, so that the oil-water mixture to form a stable emulsion.

4. pharmaceutical intermediates
diethanolamine can be used as pharmaceutical intermediates for the synthesis of a variety of drugs. For example, it can be used to synthesize the anti-tuberculosis drug ethambutol and the anti-tumor drug nitrogen mustard.

5. Personal Care Product
Diethanolamine can be used in personal care products as a pH modifier and moisturizer. It can help regulate the pH of the product while maintaining the moisture of the skin.

6. Rubber auxiliary
diethanolamine can be used as a rubber auxiliary to improve the processing performance and physical properties of rubber. It reacts chemically with rubber molecules to enhance the toughness and wear resistance of the rubber.

7. Textile auxiliaries
diethanolamine can be used as textile auxiliaries to improve the dyeing and antistatic properties of textiles. It can help the dye to better adhere to the textile, while reducing the generation of static electricity.

In short, diethanolamine has a wide range of uses in the field of chemical production raw materials. Due to its unique properties and functions, it has become an indispensable component in many industrial processes.

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