decomposes at 185 °C
|nitrogen sulfide||molecular mass
Nitrogen sulfide, also called sulfur nitride, nitrogen tetrasulfide, tetranitrogen tetrasulfide, or Schwefelstickstoff, is a very unstable primary explosive compound. Its manufacture is hazardous and rather complicated, yet is has found some industrial uses in detonators, diesel fuel as an ignition promoter, pesticides, fungicides, and as an accelerator in rubber vulcanization. Nitrogen sulfide is sensitive to heat, friction, shock, and will explode if heated over 160°C if impurities are present. The chemicals used in this lab are not easily obtainable, but can be made by the home chemist. The main ingredient is sulfur dichloride, an unstable and toxic compound, benzene is also used but it is about as popular as a rapist at a feminist gathering. Its stigma is "carcinogen," not even labs use it much anymore, so now labs do not sell it, and no public store will carry such toxins. It is possible to use toluene or carbon tetrachloride instead.
|sulfur dichloride||graduated cylinder|
Dissolve 131 mL of freshly prepared sulfur dichloride in 1950 mL of benzene in a large Erlenmeyer flask. You may pour the solution through a filter to remove any impurities that may have been in the sulfur dichloride, but it is best to purify it beforehand. Bubble anhydrous ammonia gas through the solution. A brown precipitate will begin to form, continue adding ammonia until this precipitate dissolves and forms an orange-yellow solution. Now large amounts of ammonium chloride will precipitate out of solution. Carefully heat the benzene until it boils. Immediately pour this solution over a filter to remove the crystals, collect the filtrate. Wash the crystals with 200 mL of benzene and add the wash to the filtrate. Allow the benzene filtrate to evaporate until a crystalline slush remains, filter the slush, and allow to dry. Using vacuum drying or a desiccator can speed the process. The resulting product should be yellow to orange-red crystals of nitrogen sulfide. You will need a graduated cylinder for measuring liquids.