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Used to make polyester compounds, absorb extra water and maintain moisture in certain medicines, cosmetics, or food products and as a base for deicing solutions. Propylene glycol is used by the chemical, food, and pharmaceutical industries as an antifreeze. It is a solvent for food colors and flavors, and in the paint and plastics industries. Propylene glycol is also used to create artificial smoke or fog used in fire-fighting training and in theatrical productions.
Harada, A.; Okada, M.; Li, J.; Kamachi, M. Preparation and Characterization of Inclusion Complexes of Poly(propylene glycol) with Cyclodextrins. Macromolecules 1995, 28 (24), 8406-8411.
Panchagnula, R.; Salve, P. S.; Thomas, N. S.; Jain, A. K.; Ramarao, P. Transdermal delivery of naloxone: effect of water, propylene glycol, ethanol and their binary combinations on permeation through rat skin. Int. J. Pharm. 2001, 219 (1-2), 95-105.