What is "propanediol"

n. (context organic compound English) Either of two diols derived from propane, but especially ''1,2-propanediol'' known as propylene glycol

n. a sweet colorless, viscous, hygroscopic liquid used as an antifreeze and in brake fluid and also as a humectant in cosmetics and personal care items although it can be absorbed through the skin with harmful effects [syn: propylene glycol]

Propanediol may refer to either of three isomeric organic chemical compounds:

• 1,2-Propanediol (Propylene glycol)
• 2,2-Propanediol (an geminal diol)
• 1,3-Propanediol (Trimethylene glycol)