CAS Number: 57-55-6
Synonyms: Propylene glycol, PG, propan 1, 2 diol; MPG
Mono propylene glycol is a clear, colorless, and viscous liquid with a characteristic odor. It has the formula C3H8O, is soluble in water, and has hygroscopic properties. MPG is used across a wide range of industries as it has low toxicity, coupled with a freezing point which is depressed upon mixing with water. The first grade is used in the food, cosmetics, and pharmaceutical industries. MPG is used as a solvent for food colorings and flavorings, and is also a classified humectant’s food additive (E1520).
In the personal care industry, it is used as a moisturiser in make-up, shampoo, bubble bath and baby wipes. The pharmaceutical industry uses MPG as a solvent in oral, injectable, and topical formulations.