decomposes at 100 °C
|lead nitratophosphite||molecular mass
Lead nitratophosphite, or LNP, is a stable heavy, white crystalline compound first prepared back in 1916 by E.R. Von Hertz. This compound is not all that well suited as a stand alone explosive because of its high stability and small volume of gas produced. On the plus side, it makes an excellent component in mixtures and is practically smokeless, leaving little residue or slag. This compound is best suited for percussion fuses as it burns very hot in the open.
|lead nitrate||stirrer/stirring rod|
Prepare a saturated lead nitrate solution by adding 331 g of it to 260 mL of hot water in a beaker. Prepare a saturated calcium hypophosphite solution by adding 170 g of it to 1360 mL of water, bring this solution to a boil. Add the hot lead nitrate solution slowly to the boiling calcium hypophosphite solution. The mixture is then cooled rapidly, with efficient stirring, by placing it in a salt-ice bath upon which lead hypophosphite separates. Pour the solution over a filter to collect the lead hypophosphite. Add 250 g of the lead hypophosphite to a boiling solution of 500 g of lead nitrate in 1500 mL of water in a beaker while stirring, and cool rapidly. The LNP precipitate that should have formed is filtered and dried at 40-50 °C. You will need a stirring rod or magnetic stirrer for mixing.
Lab Skills|Lab Equipment|Safety|Rogue Science|Links|What’s New|Contact Me|Disclaimer