The Enthalpies of Formation of Ethylenediamine, 1,2-Propanediamine, 1,2-Butanediamine, 2-Methyl-1,2-Propanediamine, and Isobutylamine. The C–N and N–F Thermochemical Bond Energies

Details

• Personal Author:
  Good WD ; Moore RT
• Description:
  The enthalpies of combustion of ethylenediamine, 1,2-propanediamine, 1,2-butanediamine, 2-methyl-1,2-propanediamine, and isobutylamine, as determined by oxygen-bomb combustion calorimetry, were used to derive the following values, in kcal per mole, for the enthalpies of formation of the liquid, ahf deg 298.15, From graphite and gaseous hydrogen and nitrogen: ethylenediamine, -15.06 +/- 0.13; 1,2- Propanediamine, -23.38 +/- 0.10; 1,2-Butanediamine, -28.74 +/- 0.19; 2-Methyl-1,2-propanediamine, -32.00 +/- 0.16; and isobutylamine, - 31.68 +/- 0.12. These values were combined with enthalpies of vaporization derived from vapor pressure measurements to obtain values of the enthalpies of formation in the gaseous state. For these molecules, the c--n thermochemical bond energy was derived and compared to that in the simple alkyl amines. The n--h thermochemical bond energy in a 1,2-diamine was compared to the n--f thermochemical bond energy in a 1,2-bis(difluoroamino)-alkane. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Document Type:
  Text
• Genre:
  Journal Article
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  BERC - Bartlesville Energy Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  150-154
• Volume:
  15
• Issue:
  1
• NIOSHTIC Number:
  nn:10010114
• Citation:
  J Chem and Eng Data 1970 Jan; 15(1):150-154
• Federal Fiscal Year:
  1970
• Peer Reviewed:
  False
• Source Full Name:
  J. Chem. and Eng. Data, V. 15, No. 1, January 1970, PP. 150-154
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0b8b80f5577ee2c53e580945303c7c72d67a868b1f2d89754c8a52d5c6efb8902d53c5826dd1947468e71f78444ae7795e5327e17b91bf4ae14b915f24f4f118
• Download URL:
  https://stacks.cdc.gov/view/cdc/219957/cdc_219957_DS1.pdf
• File Type:
  [PDF - 502.16 KB ]