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Triethylene glycol (TEG) is a linear polyol formed by linking three ethylene glycol molecules via ether bonds, with a molecular formula of C₆H₁₄O₄ and molecular weight of 150.17. It exhibits good thermal stability and oxidation resistance, with its core characteristics being strong hygroscopicity and excellent solubility. These properties make it a key auxiliary material in numerous industrial processes.
| Item | Specification |
| Melting point | −7°C (lit.) |
| Boiling point | 125–127°C at 0.1 mmHg (lit.) |
| Density | 1.124 g/mL at 20°C (lit.) |
| Vapour density | 5.2 (vs air) |
| Vapour pressure | <0.01 mmHg (20°C) |
| Refractive index | n₂₀/D 1.455 (lit.) |
| Flash point | 165°C |
| Acidity coefficient (pKa) | 14.06 ± 0.10 (Predicted) |
| Odour | Very mild, sweet. |
| Viscosity | 49.0 mPa·s (20°C) |
| Solubility | Completely miscible with polar solvents such as water, ethanol, and acetone; insoluble in non-polar solvents like benzene and toluene. |
Triethylene glycol is the most commonly used dehydrating agent in the natural gas industry. Additionally, it is employed for drying refinery gas, cracker gas, and compressed air.
As a high-boiling-point solvent, triethylene glycol finds extensive application in paints, inks, adhesives, and related fields.
It serves as a plasticiser for materials including polyvinyl chloride (PVC), polyvinyl acetate resin, and rubber.
As a humectant, it is commonly added to creams, lotions, lipsticks, and tobacco processing.
Employed as a cooling medium for high-temperature lubrication and precision machining.
Utilised for air purification and disinfection, such as air sterilisation in hospitals and public spaces.
Employed in the production of polyester resins, polyurethanes, surfactants, pharmaceutical intermediates, and rocket fuel stabilisers.
Serves as a humectant and softener in textile printing and dyeing.
Jinan Jinbang Chemical Co., Ltd., strategically located within the New Materials Industrial Park in Tianqiao District, Jinan City, Shandong Province, stands as a prominent chemical innovator since its establishment in 2015. Operating from a modern, expansive 37,500 m² manufacturing facility, we are dedicated to the research & development, production, and global distribution of high-performance chemical solutions.
We are always committed to delivering optimal chemical solutions for all application scenarios.
