The Second 'T' in TNT is Toluene, a colorless, water-insoluble liquid with the chemical formula C7H8. It is a mono-substituted benzene derivative, consisting of a CH3 group attached to a phenyl group. Toluene is mainly used as an industrial feedstock and as a solvent. It is also used in the manufacture of explosives, such as TNT, and is found in many consumer products, including paint thinners, glues, and nail polish removers.