What is MEG ? MEG stands for "Monoethylene Glycol." It is a colourless, odourless, and slightly viscous liquid that belongs to the family of ethylene glycols. MEG is an organic compound with the chemical formula C2H6O2 and a molecular weight of 62.07 g/mol. Monoethylene glycol is widely used in various industries due to its valuable properties, such as: Hygroscopic Nature: MEG is hygroscopic, meaning it has the ability to attract and absorb moisture from the surrounding environment. This property makes it suitable for use in products where moisture control is essential. Antifreeze Properties: MEG is commonly used as an antifreeze agent in applications like automobile radiators, HVAC systems, and winterizing fluids, as it helps prevent the formation of ice and protects against freezing in cold temperatures.