olypropylene Glycol (PPG) is a versatile chemical with many uses, including:
Food and cosmetics: As a humectant and solvent to retain moisture and maintain texture in products like cosmetics, skin creams, lotions, and toothpaste
Pharmaceuticals: As a solvent and excipient in oral, topical, and injectable medications
Aircraft de-icing: As a 50% water-diluted and heated solution to remove icing from the fuselages of commercial aircraft
Anti-icing: As a 100% undiluted cold solution to prevent ice accretion from forming on the wings and tail surfaces of an aircraft
Industrial processes: As a coolant and antifreeze in HVAC systems, hydraulic fluids, and de-icing solutions
Plumbing systems: To winterize the plumbing systems in vacant structures
Other products: As a chemical intermediate, heat transfer medium, or solvent in the production of polyester resins, engine coolants, latex paints, brake fluid formulations, lubricating-oil and grease compounding, and rubber processing
PPG is less toxic than PEG, so biotechnologicals are switching from PEG to PPG. However, high concentrations of PPG may cause skin irritation or allergic reactions in some individuals.