Thermite is a legal pyrotechnic grade composition of metal powder fuel and oxide. Thermite is not an explosive. Thermite creates a four thousand degree exothermic oxidation incendiary reaction.
Thermite is a chemical reaction between a metal & a metal oxide which can burn as hot as 2500°C [4,532° Ferenheit] or more! That’s REALLY HOT.
Thermite TH3 development is not for the faint of heart and should be made by those well versed in improvised munitions and incendiary devices.