Triethylene glycol (TEG) is a colorless,
odorless, hygroscopic liquid with the chemical formula C6H14O4. It is a viscous
liquid with a sweet taste and is miscible with water and many organic solvents.
Triethylene glycol is primarily used as a solvent, a humectant (moisture-retaining
agent), and a plasticizer in various industries.
Here are some key details about triethylene glycol along with its CAS number:
- Chemical formula: C6H14O4
- Molecular weight: Approximately 150.17
g/mol
- CAS Number: 112-27-6
- Appearance: Colorless, viscous liquid
- Odor: Odorless
- Melting point: Approximately -7.2°C (19°F)
- Boiling point: Approximately 288°C (550°F)
at 760 mmHg
- Density: Approximately 1.125 g/cm³
Triethylene glycol is commonly used in the following applications:
1. Dehydration of natural gas**: TEG is used in the natural gas industry to remove water vapor and other impurities from natural gas streams, helping to prevent corrosion and freezing in pipelines.
2. Air conditioning and refrigeration**: TEG is used as a coolant and heat transfer fluid in air conditioning and refrigeration systems.
3. Humectant in personal care products**: It is used in cosmetics, toiletries, and skincare products as a humectant to retain moisture and prevent drying.
4. Solvent**: TEG is utilized as a solvent in various applications, including inks, dyes, paints, and coatings.
5. Plasticizer: It is used as a plasticizer in the production of plastic materials, such as vinyl polymers, to improve flexibility and durability.
Triethylene glycol is considered relatively non-toxic and is generally safe for use in these applications. However, like any chemical, proper handling and storage procedures should be followed to ensure safety.
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