Journal of Radioanalytical and Nuclear Chemistry

, Volume 292, Issue 3, pp 1131–1135 | Cite as

Thermal decomposition studies of aqueous and nitric solutions of hydroxyurea

  • Shekhar Kumar
  • Pranay Kumar Sinha
  • U. Kamachi Mudali
  • R. Natarajan


Hydroxyurea and its derivatives are important nonsalt forming reductants in partitioning of uranium and plutonium in the nuclear fuel reprocessing operations. There is no experimental data available in open literature describing pressurization due to the thermal decomposition of aqueous and nitric solutions of hydroxyurea at elevated temperatures. Authors studied thermal decomposition of hydroxyurea-nitric acid system and resultant pressurization at various concentrations of nitric acid in an adiabatic calorimeter in closed-vent conditions. During these experiments, pressurization was observed. In this paper, results of these experiments have been discussed.


Hydroxyurea PUREX UREX Runaway reaction Thermal decomposition 


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  • Shekhar Kumar
    • 1
  • Pranay Kumar Sinha
    • 1
  • U. Kamachi Mudali
    • 1
  • R. Natarajan
    • 1
  1. 1.Reprocessing GroupIndira Gandhi Centre for Atomic ResearchKalpakkamIndia

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