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Propylene Glycol is colorless hygroscopic liquid which finds application for production of polyester resins, thermoset plastics, and in various edible items including coffee-based beverages. It is miscible in water and has melting point of around -59 degrees Celsius. This compound has molecular formula C3H8O2 and molar weight of 76.10 g/mol. It is an organic compound which has high viscosity. With E number E405, Propylene Glycol is also used in food industry and in pharmacology & cosmetics with E490.