A colorless, flammable liquid which is used as a solvent (it is most familiar as the solvent in nail polish remover). The simplest ketone (it is also known as 2-propanone), it mixes with water, ethyl alcohol, and most oils. It melts at -95.4 C°. and boils at 56.2 C°. It is naturally found in very tiny quantities in the body fluids and tissues of healthy people and in somewhat larger amounts in people suffering from diabetes or starvation.

From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.