Diethylene Glycol (DEG)

Diethylene glycol (DEG) is a colorless, practically odorless, and hygroscopic liquid with a sweetish taste.

Diethylene glycol, classified as a dihydric alcohol and belonging to the glycol ether group, plays a pivotal role in the chemical industry. Diethylene glycol is predominantly synthesized through the hydration process of ethylene oxide, similar to the production of monoethylene glycol. During this process, ethylene oxide reacts with water, yielding diethylene glycol alongside monoethylene glycol and triethylene glycol, depending on the specific reaction conditions employed.

Physical Property:

  • clear, colorless liquid
  • odorless
  • sweet taste
  • completely miscible with water, alcohol

Application:

  • Building Block for Polymers: DEG is a key starting material for creating saturated and unsaturated polyester resins, polyurethanes, and plasticizers. These materials are essential for various products.
  • Organic Synthesis: In the world of chemical reactions, DEG serves as a raw material for producing 1,4-dioxane and morpholine, both important for other industrial processes.
  • Multipurpose Solvent: DEG’s ability to dissolve a wide range of materials makes it a valuable solvent in processing synthetic resins, oils, dyes, and even nitrocellulose.
  • Moisture Control: DEG acts as a humectant, attracting and retaining moisture. This property makes it useful in inks, glues, and even tobacco and corks to help them maintain the desired moisture level.