Diethylene Glycol (DEG)

Diethylene Glycol (DEG) is a versatile, water-soluble organic compound formed by the ether linkage of two ethylene glycol molecules. This clear, nearly odorless liquid combines the chemical characteristics of both primary alcohols and ethers, delivering exceptional solvency power, hygroscopicity, and thermal stability in a single molecule. With a boiling point of 245°C (473°F)—significantly higher than its mono-ethylene glycol precursor—DEG offers superior performance in applications requiring low volatility and elevated operating temperatures. The compound’s dual hydroxyl groups provide extensive chemical reactivity, serving as building blocks for polyester resins, polyurethanes, plasticizers, and specialty intermediates. Its remarkable ability to absorb moisture from gases and liquids has established DEG as the industrial standard for natural gas dehydration and humidity control applications.

• Exceptional Thermal Range: Operating capability from -9°C to over 240°C with extremely low vapor pressure (0.002 mmHg @ 20°C), enabling use in both low-temperature freeze protection and elevated-temperature process applications.
• Superior Solvency: Dissolves a broad spectrum of organic substances including dyes, resins, oils, and nitrocellulose while maintaining complete water miscibility across all concentrations.
• Outstanding Hygroscopicity: Efficiently absorbs atmospheric moisture, making it ideal for gas drying, humidity control, and as a conditioning agent for paper, cork, and textile products.
• Chemical Versatility: Dual hydroxyl functionality enables conversion to aldehydes, amines, esters, ethers, and numerous other derivatives for downstream chemical synthesis.