Chemicals
Types of Glycols: Introduction to 5 Main Petrochemical GlycolsGlycols are a class of organic compounds, specifically diols (alcohols with two hydroxyl groups), known for being colorless, viscous liquids used widely as antifreeze, coolants, solvents, and in manufacturing. The most common types are Ethylene Glycol (EG), used in industrial antifreeze and polyester, and Propylene Glycol (PG), used in food, cosmetics, and non-toxic antifreeze due to its lower toxicity. They function by lowering water's freezing point and raising its boiling point, crucial for engine efficiency, and serve as chemical intermediates and humectants in various products.