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Di Ethylene Glycol
Di ethelene glycol (also known as DEG, 2,2-oxydiethanol and glycol ether ether diglycol) is a clear, colourless, odourless liquid with the molecular formula C4H10O3, CAS: 111-46-6. It has a specific gravity of 1.118 and a flash point of 154 °C.
It is soluble both in water and in many organic compounds and has hygroscopic properties which makes it a useful industrial chemical.
Demand of diethylene glycol is based on the demand for monoethylene glycol. The process consists of the oxidation of ethylene at a high temperature in the presence of a silver oxide catalyst. The ethylene oxide is then hydrated to yield diethylene glycol with monoethylene glycol and triethylene glycol as co-products.
Di ethylene glycol is utilized in the industry of paper, tobacco, glue, cellophane and natural gas industry due of its hygroscopic properties.
Di ethylene glycol is also used as a chemical intermediate in the manufacture of unsaturated polyester resins, plasticisers, acrylate and methacrylate resins, and urethanes. It can also be used as a cement grinding aid, in solvent extraction, and in printing ink.
Di ethylene glycol is now being displaced by tri ethylene glycol as the lower toxicity of tri ethylene glycol.