Monoethylene glycol (MEG) is a colorless, odorless, and slightly viscous organic compound widely used in various industries. Primarily known for its role as an essential component in the production of polyester fibers, resins, and polyethylene terephthalate (PET) plastics, MEG serves as a crucial raw material in the manufacture of textiles, packaging materials, and plastic bottles. Additionally, its properties as a coolant and antifreeze make it a common ingredient in automotive and industrial applications, preventing freezing and overheating in engines and mechanical systems. MEG's versatility, solubility, and ability to lower the freezing point of water have established it as a vital compound in diverse sectors, from manufacturing to engineering.