Propylene glycol
Propylene Glycol
Propylene glycol (pronounced: pruh-PEE-leen GLY-kawl) is a synthetic organic compound with the chemical formula C3H8O2. It is a viscous, colorless liquid, which is nearly odorless but possesses a faintly sweet taste.
Etymology
The term "propylene glycol" is derived from propylene, the common name for the three-carbon alkene (also known as propene), and glycol, referring to its classification as a type of alcohol that contains two hydroxyl groups.
Chemical and Physical Properties
Propylene glycol is a diol, a type of alcohol with two hydroxyl groups. It is miscible with a broad range of solvents, including water, acetone, and chloroform. It maintains low toxicity levels and is used in a variety of applications, from the industrial to the medical field.
Medical Uses
In the medical field, propylene glycol is used as a solvent in pharmaceuticals, including oral, injectable, and topical formulations. It is also used as a humectant (a substance used to keep things moist), a solvent, and a preservative in food and for tobacco products. It is also used in the preparation of intravenous pharmaceutical products.
Safety and Health Effects
Propylene glycol is generally considered safe for use in food, pharmaceuticals, and cosmetic products. However, it can cause skin irritation and allergic reactions in some individuals. Ingestion of large amounts can lead to potentially serious health effects, including kidney damage and central nervous system effects.
Related Terms
External links
- Medical encyclopedia article on Propylene glycol
- Wikipedia's article - Propylene glycol
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