Trinitrotoluene is a high explosive that is
unaffected by ordinary shocks and
therefore must be set off by a detonator. TNT
is often mixed with other
explosives such as ammonium nitrate to form
amatol. Because it is insensitive to
shock and must be exploded with a detonator,
it is the most favored explosive
used in munitions and construction.
Why do nitro groups (NO2) lead to unstable
compounds?
Nitrogen has charge of +1 and nitro group have
a strong tendency to withdraw
(pull) electrons from other parts of the
compound. Attaching three nitro groups to
a compound leads to an extremely unstable
situation.