Synthesis And Analyses Of N,N –Dinitrourea

Synthesis And Analyses Of N,N –Dinitrourea

This comprehensive guide describes in detail proven methods and experiments for the analyses and synthesis of of N,N –Dinitrourea.

N,N’-Dinitrourea was obtained by nitration of urea in a 50:50 mixture of sulphuric acid and nitric acid at low temperature. N,N’-Dinitrourea has for the first time been synthesized in pure form and in acceptable yield. It was found to be stable in a desiccator for several weeks without decomposing. It has a high density (1.98 g/cm3) and a very high positive oxygene balance (+21.33 %) which should make it interesting as an energetic material.

It is, however, sensitive to friction and impact, has a low thermal stability and is chemically labile. All this taken into consideration we think that N,N’-dini-trourea should preferably be used as a starting material towards more stable energetic materials than as an energetic material in its own right.

N,N’-dinitrourea is a powerful and sensitive explosive and should be handled with appropriate precau¬tions. This guide includes the following topics:

  • Summary
  • Introduction
  • Experimental
  • Synthesis of’N,N’-Dinitrourea
  • Analysis
    • Differential Scanning Calorimetry, DSC
    • Ignition Test in Wood’s Metal Bath
    • Thermogravimetry, TG
    • Mass Spectroscopic Data
    • Density
    • Sensitivity
    • Summary and Conclusions
  • Acknowledgements
  • References
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