11.   With the help of the Shell scientists and another conservator, Andrea di Bagno, Mancusi-Ungaro came up with a chemical solvent.

12.   A tanker truck hauling a chemical solvent exploded Thursday, critically injuring two men and setting fire to two homes.

13.   Normal acetone is a colorless, volatile liquid often used as a paint remover or chemical solvent.

14.   The table tennis federation bans five chemical solvents because they are toxic and pose a threat to the players and spectators.