TNPht is also known as ethyl picrate; aethyl-[2,4,6-trinitrophenyl]-ather; pikrinsaureaethylather, or aethylpikrat in German; keineyaku, or keyneyaku in Japanese. The proper scientific name for this substance is 2,4,6-trinitrophenetole. This explosive is almost as powerful as TNT but its sensitivity is not all that great. This explosive would be classified as a booster, it needs a detonator to set it off and then it would set off a high explosive. This material was tested in France during WWI in shells as a bursting charge. The Japanese used it during WWII as a substitute for TNT because they had a shortage of toluene. This lab was developed by L. Desvergnes around 1922.
|nitric acid||graduated cylinder|
|sulfuric acid||stirrer/stirring rod|
Dissolve 53 g of 2,4-dinitrophenetole in 95 mL of 95-98% sulfuric acid in a 500-mL beaker while stirring. Add 62% nitric acid so that the temperature rises rapidly to 30 °C. Continue the addition, while maintaining the temperature between 30-40 °C by cooling with a salt-ice bath, until a total of 30 mL of nitric acid has been added. Pour the resulting yellow slurry into about 1500 mL of cold water, filter to collect the crystals, wash the crystals with cold water, and dry. There should be about 61.8 g of product, or 96% of the theoretical yield. You will need a graduated cylinder for measuring liquids, a stirring rod or magnetic stirrer for mixing, and a thermometer to monitor the temperature.
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