Possible Clues:

• TNT ingredient?
• Silly lout seen leaving square with solvent
• Constituent of petroleum fuel turned out not fine in general character
• Eloquent letters, no question, making an explosive mixture
• One "T" of TNT
• Methyl benzene used as a solvent and in explosives
• The second 'T' in TNT
• Coal tar product
• Art-studio solvent
• Benzene-like liquid