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[Chemical Knowledge]：Properties and Uses of Triethylene Glycol

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Diethylene Glycol (DEG) is a colorless, transparent and sweet viscous liquid, which belongs to the important material in the field of chemical production raw materials. It plays a key role in many chemical production processes, so understanding its properties and uses is very important for practitioners in the chemical industry.

1. two shrink three ethylene glycol properties

1. physical properties
two shrink three ethylene glycol is colorless transparent viscous liquid, with sweet taste. It has a high boiling point of 245°C and a density of about 1.11g/cm³. DEG is miscible with polar solvents such as water, ethanol and ether, but insoluble in non-polar solvents such as hydrocarbons.

2. chemical properties of
triethylene glycol has good chemical stability, acid, alkali stability, not easy to occur oxidation, reduction and other reactions. It can be esterified and etherified with many compounds to generate the corresponding derivatives. In addition, DEG is also hygroscopic and can absorb moisture in the air.

2. diethylene glycol use

1. solvent
diethylene glycol as a polar solvent, widely used in paint, ink, dye, resin and other chemical industry. It can be used as a solvent for these substances, improving their solubility and fluidity, thereby improving the performance of the product.

2. humectant
Because triethylene glycol is hygroscopic, it can be used as a humectant for cosmetics, skin care products and other products. It can absorb moisture in the air, maintain the humidity of the product, and keep the skin hydrated.

3. Antifreeze
diethylene glycol can reduce the freezing point of water, so it can be used as an antifreeze for automotive coolant, aircraft anti-icing fluid and other products. It can prevent the liquid from freezing at low temperature and ensure the normal operation of the equipment.

4. cleaning agent
diethylene glycol can be used as a cleaning agent to remove oil and oxide on the metal surface. After it is mixed with water, it can form a solution with strong cleaning ability and effectively remove stains.

In short, triethylene glycol has a wide range of uses in the field of chemical production raw materials. For practitioners in the chemical industry, it is very important to understand its properties and uses.

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