Propylene glycol is manufactured by the hydration of propylene oxide with water under controlled conditions. This yields a colorless, odorless, slightly viscous liquid with a faintly sweet taste. It is completely miscible with water and many organic solvents.
This makes it an exceptionally versatile carrier and solvent in food processing applications. Propylene glycol functions as a humectant that prevents moisture loss and maintains the soft texture of food products during storage. It is also widely used as a solvent for food-grade flavors, colors, and antioxidants that are not readily soluble in water alone. The ingredient meets USP/FCC pharmaceutical and food-grade purity standards and is generally recognized as safe for food use.
