Triacetin

The triglyceride 1,2,3-triacetoxypropane is more generally known as triacetin and glycerin triacetate. It is the triester of glycerol and acetic acid.

It is an artificial chemical compound, commonly used as a food additive, for instance as a solvent in flavourings, and for its humectant function, with E number E1518 and Australian approval code A1518. Triacetin is also a component of casting liquor with TG.

Triacetin can also be used as a fuel additive which can reduce knocking in gasoline and improve cold and viscosity properties of biodiesel.

In a 1994 report released by five top cigarette companies, triacetin was listed as one of the 599 additives to cigarettes. The triacetin is applied to the filter as a plasticizer. 

Because it is in some sense the simplest possible fat, it is being considered a possible source of calories in artificial food regeneration systems on long space missions. It is believed to be safe to get over half of one's dietary calories from triacetin.