Is tnt real i've only seen it in minecraft i don't know if its real?

Trinitrotoluene (tri-Nitro-towel-u-ene ] TNT),
A yellow solid known as an explosive material with convenient handling properties.

Besides being extensively used in the weapons of both World Wars, and more recent use in hydraulic fracking, TNT was the major explosive on board the French ship Mont-Blanc, which blew up in Halifax Harbor in 1917 -- which was the largest man-made explosion before the advent of nuclear bombs.