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[Chemical Knowledge]：Properties and Uses of Triethylene Glycol

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Triethylene Glycol (TEG) is a kind of chemical product with many excellent properties, which is widely used in various industrial fields. In the field of chemical production raw materials, triethylene glycol has attracted much attention because of its unique physical and chemical properties. This article will detail the properties and uses of triethylene glycol.

1. properties of triethylene glycol

1. physical properties
triethylene glycol is a colorless, transparent, slightly sweet viscous liquid. It has a high boiling point and flash point, so it has good thermal stability and oxidation resistance. In addition, triethylene glycol also has a low vapor pressure, is not volatile, and is not corrosive to metals.

2. chemical properties
triethylene glycol molecule contains three hydroxyl groups (-OH), so it has high activity and can react with a variety of compounds. Triethylene glycol has certain acidity and can react with alkali to form salt. In addition, it can also react with acid anhydride, acid chloride and other compounds to produce esters.

2. triethylene glycol use

1. solvent
triethylene glycol as an excellent solvent, widely used in various chemical production process. It can dissolve many organic and inorganic substances, such as resins, paints, dyes, etc. In addition, triethylene glycol has low toxicity and can be used in the production of food additives and pharmaceutical intermediates.

2. humectant
triethylene glycol has good moisturizing properties, can be used in the production of cosmetics, skin care products. It can maintain the moisture of the skin and make the skin smoother and softer.

3. Antifreeze
Triethylene glycol can lower the freezing point of the solution, so it can be used as an antifreeze in the cooling system of machinery and equipment such as automobiles and airplanes. In the cold winter, it can prevent the cooling system from freezing and ensure the normal operation of the equipment.

4. cleaning agent
three ethylene glycol has good cleaning performance, can be used to clean the metal surface of the oil, stains and so on. It can replace the traditional cleaning agent, more environmentally friendly and efficient.

In short, triethylene glycol as an excellent chemical production raw materials, has a wide range of applications. In the future chemical production, triethylene glycol will play a more important role.

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