Toluene is a clear colorless liquid, flammable, with a distinguishing aromatic odor. with C7H8 chemical formula, Could be found naturally in crude oil and Tolu tree. Also produced in the process of making gasoline and other fuels from crude oil, or making coke from coal. Vapors heavier than air. Toluene is used a solvent, aviation and automotive fuels, as a chemical intermediate in various industrial applications, and to make other chemicals like paints, paint thinners, fingernail polish, lacquers, adhesives, and rubber and in some printing and leather tanning processes. Toluene is soluble in alcohol, ethers, benzene bot not water. Less dense than water, hence floats in it. toluene might be toxic by inhaling, touching and ingesting.