Heats of combustion of some symmetrical dialkyl ureas and their corresponding alkyl carbamates

  • T. Venugopala Charlu
  • M. R. A. Rao


The standard heats of combustion of the disubstituted ureas, N, N′-diheptyl urea, N, N′-dioctyl urea and N, N′-didecyl urea and the carbamates,n-heptyl ammoniumn-heptyl carbamate,n-octylammoniumn-octyl carbamate andn-decyl ammoniumn-decyl carbamate have been determined. The values found are 2353±1·3, 2658·4±1·1, 3268·5±1·7, 2349·8±1·6, 2654·4±1·2, 3264·6±1·8, K.cals. mole−1 respectively. The heats of formation of these compounds have been calculated.


Carbamate Decyl Heptyl Didecyl Parr Instrument Company 
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  1. 1.
    Manual No. 117,Parr Oxygen Bomb Calorimeters, Parr Instrument Company, Illinois.Google Scholar
  2. 2.
    A.S.T.M. Standards, 1949, Part 5, p. 605.Google Scholar
  3. 3.
    Dickinson, H. C...Bull. Natl. Bur. Standards, 1915,11, 189.Google Scholar
  4. 4.
    Venugopala Charlu, T... “Studies on high pressure reactions, (a) Aliphatic amines and carbon dioxide, (b) 1–4 dioxane, carbon monoxide and water,”Ph.D. Thesis, Indian Institute of Science, Bangalore, 1962.Google Scholar
  5. 5.
    Moore, M. B. and Wright, H. B.J. Am. Chem. Soc., 1948,70, 3865.CrossRefGoogle Scholar
  6. 6.
    Org. Reactions, Ed. Roger Adamset al., John Willey and Sons, Inc., 1947,3, 307.Google Scholar
  7. 7.
    Chabrier, P. and Najer, H.Bull. Soc. Chim. France, 1957,2, 1069–072.Google Scholar
  8. 8.
    Fred Applegathet al. ..Brit. Pat. 818,864 (To Monsanto Chemical Co.), 26 Aug. 1959;Chem. Abstr., 1960,54, 9774.Google Scholar
  9. 9.
    Scott, F. L. and Scott, M. T.J. Am. Chem. Soc., 1957,79, 6081.Google Scholar
  10. 10.
    Hunter, B. A. and Glenn, H. D.U.S. Pat. 2,635,124 (To United States Rubber Co.), April 14, 1953;Chem. Abstr., 1953,47, 7814.Google Scholar
  11. 11.
    Leibnitz, E.et al.;..Chem. Abstr., 1961,55, 365.Google Scholar
  12. 12.
    Lange, N. A...Handbook of Chemistry, McGraw-Hill Book Co., Inc., New York, 1956.Google Scholar
  13. 13.
    Prosen, E. J. and Rossini, F. D.J. Research, Natl. Bur. Standards, 1945,34, 263.Google Scholar

Copyright information

© Indian Academy of Sciences 1964

Authors and Affiliations

  • T. Venugopala Charlu
    • 1
  • M. R. A. Rao
    • 1
  1. 1.Department of Inorganic and Physical ChemistryIndian Institute of ScienceBangalore-12India

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