Toluene is a liquid used as a solvent and as a thinner for certain inks, paints, lacquers, resins, cleaners, and adhesives. It is an organic liquid with a sweet, benzene-like odor, found in gasoline and aviation fuel. The most common use of toluene is in the manufacture of benzene and urethane. World-wide, there are many names used for toluene. On any product's label, it may be easiest to identify toluene by its Its unique identifier number assigned by the Chemical Abstracts Service (CAS): 108-88-3. Toluene is very hazardous because both as a liquid and as a vapor it is highly toxic and flammable. Keep out of the reach of children. Toluene presents a significant public hazard as an environmental pollutant, especially to air and water. In order to dispose of it, obtain advice from local waste disposal authorities.(pr. TAHL-yoo-een)Also see clean up.