Ethylene glycol is a colorless, practically odorless, low-volatility, low-viscosity, hygroscopic liquid. It is completely miscible with water and many organic liquids. The hydroxyl groups on glycols undergo the usual alcohol chemistry, giving a wide variety of possible derivatives. Hydroxyls can be converted to aldehydes, alkyl halides, amines, azides, carboxylic acids, ethers, mercaptans, nitrate esters, nitriles, nitrite esters, organic esters, peroxides, phosphate esters and sulfate esters. This chemistry permits ethylene glycol to act as an intermediate in a wide range of reactions. Especially significant is resin formation, including the condensation with dimethyl terephthalate or terephthalic acid resulting in a polyester resin. The reactivity and solubility of ethylene glycol provide the basis for many applications. The widespread use of ethylene glycol as an antifreeze is based on its ability to lower the freezing point when mixed with water. The physical properties of ethylene glycol-water mixtures are therefore extremely important.
Ethylene Glycol is used for various applications, such as Polyester resins (fibers, containers and films), Resin esters as plasticizers (adhesives, lacquers and enamels), Alkyd-type resins (synthetic rubbers, adhesives, surface coatings), Stabilizer against gel formation in solvent systems, de-icing fluid, heat transfer fluid, used in all-weather automotive antifreeze and coolant, water based formulations(adhesives, latex paints, and asphalt emulsions), and as a humectant for textile fibers, paper, leather, adhesives, and glue.
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Also Known As
1,2-Ethanediol; Glycol Ethylene Alcohol; Hypodicarbonous acid; Monoethylene glycol; MEG; Ethane-1,2-diol