What is triethylene glycol?
Triethylene glycol also known as triethylene glycol, triethylene glycol, triethylene glycol diethylene glycol. Colorless, odorless, hygroscopic, viscous liquid. Miscible with water and ethanol, slightly soluble in ether.
Physical Properties of Triethylene Glycol (TEG)
Triethylene Glycol, also known as Glycerol Triol, is a colorless and odorless liquid with the chemical formula C3H8O3. It is a saturated trihydric alcohol. Similar to water, TEG is a polar molecule, characterized by relatively high surface tension and a large dielectric constant. Because of these features, TEG shares many physical properties with water, such as specific heat capacity and density.
Chemical Properties of Triethylene Glycol (TEG)
While its physical properties resemble those of water, its chemical behavior differs significantly. As an alcohol, TEG contains three hydroxyl groups (-OH), which serve as the main reactive centers. These hydroxyl groups are capable of forming hydrogen bonds similar to those in water. As a result, TEG is an excellent solvent and finds wide application across industries such as pharmaceuticals, chemicals, and food processing.
Is triethylene glycol a high-boiling polar solvent?
Triethylene glycol (TEG) is a high-boiling polar solvent. Its boiling point is approximately 285°C to 289.4°C (at 101.3 kPa), classifying it as a high-boiling compound. Furthermore, it exhibits polarity, being miscible with polar solvents such as water, ethanol, and propanol, and slightly soluble in diethyl ether, demonstrating its polar nature.
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