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[Chemical Knowledge]：Properties and Uses of Diethylene Glycol-Driving Materials

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The nature and use
of diethylene glycol-starting material in the field of chemical production raw materials
1. Introduction

diethylene glycol-starting material is an important chemical raw material, widely used in various fields. It has excellent properties, such as high boiling point, low toxicity, good solubility, etc., so it plays an important role in the production of chemical products. This article will detail the nature, use and production process of diethylene glycol-start-up materials.

2. diethylene glycol-driving material properties

1. physical properties: diethylene glycol-driving material is a colorless transparent liquid, with a slight sweetness. It has a higher boiling point and a lower vapor pressure, so there is less evaporation loss during use. In addition, it has good solubility and can be miscible with water, ethanol, acetone and other solvents.
2. Chemical properties: diethylene glycol-driving materials have the chemical properties of alcohol hydroxyl groups, which can be esterified, etherified, oxidized and other reactions. At the same time, it has good stability, is stable to acid and alkali, and is not easy to decompose.

3. diethylene glycol-driving material use

1. solvent: diethylene glycol-driving material as an excellent solvent, widely used in ink, dye, resin and other fields. It can improve the solubility of dyes, improve the fluidity of inks, and improve the film-forming properties of resins.
2. moisturizing agent: diethylene glycol-drive material has good moisturizing properties, can be used in cosmetics, skin care products, increase the moisturizing effect of the product, so that the skin to maintain moisture.
3. Antifreeze: Due to the low freezing point of diethylene glycol-driving material, it can be added to engine coolant and other products as an antifreeze to prevent freezing at low temperatures.
4. Plastic additives: diethylene glycol-driving material can be added to the plastic as a plasticizer to improve the flexibility and impact resistance of the plastic.

4. diethylene glycol-starting material production process

1. esterification method: ethylene glycol and acetic acid as raw materials, in the role of acidic catalyst esterification reaction, the generation of ethylene glycol diacetate. Ethylene glycol diacetate then undergoes an alcoholysis reaction with water in the presence of an alkaline catalyst to produce diethylene glycol and acetic acid. Finally, the pure diethylene glycol-start-up material is obtained by distillation separation.
2. Chloroethanol method: Chloroethanol as raw material, under alkaline conditions and water addition reaction to generate diethylene glycol. Then, the diethylene glycol-start-up material of high purity is obtained by rectification and purification.

5. conclusion

diethylene glycol-starting material as an important chemical raw material, has excellent properties and a wide range of uses. In the production of chemicals, it can be used as a solvent, moisturizer, antifreeze and plastic additives. Through different production processes, high-purity diethylene glycol-start-up materials can be obtained to meet the needs of different fields.

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