1. TOLUENE, ALSO KNOWN AS METHYLBENZENE OR TOLUOL, IS
AN AROMATIC HYDROCARBON. IT IS A COLORLESS, WATER-
INSOLUBLE LIQUID WITH THE ODOR ASSOCIATED WITH PAINT
THINNERS. IT IS A DERIVATIVE OF MONOSUBSTITUTED
BENZENE, FORMED BY A METHYL (CH₃) GROUP ATTACHED TO
A PHENYL GROUP. AS SUCH, ITS IUPAC SYSTEMATIC NAME IS
METHYLBENZENE. TOLUENE IS MAINLY USED AS AN
INDUSTRIAL RAW MATERIAL AND AS A SOLVENT. AS A
SOLVENT IN SOME TYPES OF PAINT THINNERS, PERMANENT
MARKERS, CONTACT CEMENT, AND CERTAIN TYPES OF
GLUE, TOLUENE IS SOMETIMES USED AS A RECREATIONAL
INHALANT AND HAS THE POTENTIAL TO CAUSE SEVERE
NEUROLOGICAL DAMAGE.