explodes at 160 °C
1-guanyl-4-nitrosoaminoguanyltetrazene, more conveniently called tetracene, was first prepared back in 1910 by two scientists named Hoffmann and Roth. It is a colorless pale yellow, fluffy material with slight hygroscopic properties. It is stable at normal temperatures when wet or dry, but decomposes in boiling water. Tetracene is sensitive to friction, shock, and flame. Its brisiance is greatest when it has not been compacted, so this compound can easily become dead-pressed. Tetracene is not suited for blasting caps or alone as an explosive since it does not detonate itself very efficiently. It is best suited for booster charges or in blasting caps mixed with other explosives. It can only achieve is full explosive potential if detonated by another explosive charge. The only problem I have noted with this lab is the aminoguanidine bicarbonate used as the main ingredient. I have found no literature whatsoever to suggest that this substance exists although it is probably a rare analog of aminoguanidine reacted with a bicarbonate substance, and given a non IUPAC name.
|acetic acid||3-liter Florence flask|
|aminoguanidine bicarbonate||graduated cylinder|
Prepare a solution of 34 g of aminoguanidine bicarbonate and 12.5 mL of glacial acetic acid with 2500 mL of water in a 3-liter Florence flask. Gently warm the flask on a steam bath and shake periodically until everything is completely dissolved into solution. The solution should be filtered to remove any impurities that may have not dissolved, then cooled to 30º C by running cold water from the faucet over the flask. It is necessary to filter the solution if there are impurities present. Add 27.6 g of sodium nitrite to the solution while swirling to dissolve it. Set the flask aside at room temperature for 3 or 4 hours then shake it vigorously to start precipitation of the product. Let the flask stand for another 20 hours. After standing, decant as much of the solution off as possible and drown the remaining crystals with water. Decant and drown with water several more times to wash the crystals. Filter the washed crystals to collect them and thoroughly wash again with water. Dry the product at room temperature and store in a sealed glass container to keep out the moisture. You will need a graduated cylinder for measuring liquids, and a thermometer to monitor the temperature.
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