Crossing the napalm idea with the pyrophoric Sodium idea, and we have:
(From wikipedia)
Thickened pyrophoric agent (TPA)
Triethylaluminium thickened with polyisobutylene is used as an incendiary weapon, as a pyrophoric alternative to napalm, e.g. in the M74 rockets for the M202A1 launchers. [1] In this application it is known as TPA, for thickened pyrotechnic agent or thickened pyrophoric agent.
from another site:
Each rocket consists of an M235 warhead, containing approximately 1.34 pounds (0.61 kg) of thickened pyrophoric agent (TPA), an M434 fuze, and an adapter, which adapts an M54 rocket motor to the warhead. The TPA is triethylaluminum (TEA), a substance similar to white phosphorus, which burns spontaneously when exposed to air at temperatures between 1400-2200 degrees Fahrenheit.
Yikes!