|DNPA polymer||molecular mass
This explosive is the polymerization product of the explosive DNPA, the synthesis of which is described in its own lab. It has the appearance of a cream colored powder or an amber pellet when melted together. It is fairly stable, resisting heat and shock to a degree. I do not have much other data of use on this compound. I know the name of this one is pretty strange, there isn't even any chlorine in the final product.
|4,4-dinitropimelic acid||250-mL Erlenmeyer flask|
|phosphorus pentoxide||vacuum desiccator|
This preparation is a two-step process which first involves the synthesis of the chloride, and then the polyester. The chloride is prepared by very carefully refluxing a mixture of 33 mL of 4,4-dinitropimelic acid with 90 mL of thionyl chloride in a round bottomed 250-mL Erlenmeyer flask for 2 hours. Filter the mixture while still hot to collect the crystals then rapidly cool them to -15 °C. Recrystallization from thionyl chloride gives a 95% yield of the chloride. To polymerize the chloride, add it to 50 mL of dioxane for every 0.1 moles (about 28 g) of the chloride, in a flask of suitable size. During mixing, the dioxane should be heated to 100 °C and the works should be under dry nitrogen. The polymerization will take about 173 hours. The polymer is washed with water, then vacuum steam distilled at 25 °C. The polymer can be dried over phosphorus pentoxide in a vacuum desiccator at a pressure of 2 mm of mercury. You will need a graduated cylinder for measuring liquids, and a thermometer to monitor the temperature.
Lab Skills|Lab Equipment|Safety|Rogue Science|Links|What’s New|Contact Me|Disclaimer