Mono Ethylene Glycol, commonly referred to as MEG, is a vital chemical compound with the chemical formula C2H6O2. It is a colorless, odorless, and sweet-tasting liquid that is miscible with water. MEG is a type of glycol and belongs to the family of diols or polyols, which means it contains two hydroxyl (-OH) groups in its molecule.

MEG is perhaps best known for its extensive use as a raw material in the production of polyester fibers, resins, and films. In the textile industry, it plays a critical role in the manufacture of polyester, which is used in a wide range of applications, including clothing, upholstery, and packaging materials. MEG is also utilized in the production of PET (polyethylene terephthalate) bottles, commonly used for beverages and other liquid products.

Another significant application of MEG is in the automotive industry, where it is used in engine coolants and antifreeze formulations. Its excellent thermal properties, including a high boiling point and low freezing point, make it an effective coolant for engines, preventing overheating in extreme temperature conditions.

Beyond its role in textiles and automotive applications, MEG serves as a humectant in the cosmetics and personal care industry, helping to retain moisture in various products such as lotions, creams, and shampoos. It is also utilized in the production of resins, solvents, and as a precursor in the synthesis of various chemicals, showcasing its versatility in industrial processes.