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Journal of Thermal Analysis and Calorimetry

, Volume 82, Issue 1, pp 3–6 | Cite as

The enthalpies of combustion and formation of L-α-glutamic and 6-aminohexanoic acids

  • Iulia Contineanu
  • Loredana Chivu
  • Şt. Perişanu
Article

Summary

The energies of combustion of crystalline L-α-glutamic and 6-aminohexanoic acids were measured in a static bomb adiabatic calorimeter, in pure oxygen at 3040 kPa. Corrections were made for the heats due to the ignition of sample and for the nitric acid formation. The derived enthalpies of formation for L-α -glutamic and 6-aminohexanoic acids are Δf H cr 0= -1002.6±1.1 kJ mol-1and Δf H cr 0= -641.6±1.2 kJ mol-1, respectively. The data of enthalpy of formation are compared with literature values and with estimated values by means of group additivity, using parameters recommended by Domalski and Hearing.

amino acids enthalpy of formation heats of combustion static bomb 

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Copyright information

© Springer-Verlag/Akadémiai Kiadó 2005

Authors and Affiliations

  • Iulia Contineanu
    • 1
  • Loredana Chivu
    • 2
  • Şt. Perişanu
    • 3
  1. 1.Institute of Physical Chemistry 'I. G. Murgulescu'
  2. 2.Institute of Physical Chemistry 'I. G. Murgulescu'
  3. 3.Polytechnical University of Bucharest

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