To a 1-L reflux apparatus filled with 273 g of 99% sulfuric acid, 54.7 g of sodium nitrate is slowly added, an addition of 67 g of 2,4-dinitrotoluene, 1mL at a time over the course of 2 hours is started with stirring. The beaker should be heated at 80°C, the temperature slowly rises to about 125°C and it is kept at the temperature for 2h with stirring, after the stirring the mixture is poured into a beaker with 400g of ice and the crude product is filtered and washed with 600 mL of water. The crude product is then stirred while it’s molten with 400 mL of water, the mixture is cooled down and washed with 400 mL of water. The crude product is recrystallized from warm methanol with some decolorizing activated carbon.
The nitrating mixture
The nitration and stirring
The crude product crystallizing and solidifying
Washing the molten TNT
Recrystallization of the TNT from warm methanol
The recrystallized product