Hexafluorobenzene and 1,3-Difluorobenzene Low-Temperature Calorimetric Studies and Chemical Thermodynamic Properties

Details

• Personal Author:
  Finke HL ; Messerly JF
• Description:
  The low-temperature thermal properties of hexafluorobenzene and 1,3-difluorobenzene were measured by adiabatic calorimetry from 13 to 342 K and 11 to 355 K, respectively. The properties measured were heat capacities of solid and liquid, enthalpies of fusion, triple point temperature, and purity, and, in addition, for 1,3-difluorobenzene, the enthalpy and temperature of a solid-solid transition. From these results the following chemical thermodynamic functions were calculated for the condensed phases at selected temperature: Gibbs energy function, enthalpy function, enthalpy, entropy, and heat capacity. For 1,3-difluorobenzene the entropies in the ideal gas state were calculated at several temperatures, a revised vibrational assignment was made from Raman and infrared frequencies reported in the literature, and the chemical thermodynamic functions in the ideal gas state were calculated from 0 to 1500 K. Values of the Gibbs energy of formation and logarithm of equilibrium constant of formation for 1,3-difluorobenzene were also computed for the range 0 to 1500 K. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• ISSN:
  0021-9614
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Oklahoma ; OSHA Region 6
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  BERC - Bartlesville Energy Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  2
• Issue:
  6
• NIOSHTIC Number:
  nn:10010487
• Citation:
  J Chem Thermodynamics 1970 Nov; 2(6):867-880
• Federal Fiscal Year:
  1971
• Peer Reviewed:
  False
• Source Full Name:
  The Journal of Chemical Thermodynamics
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:b227e5bcdf27eec86d4e52b6f18b54502966d84d1c879e2fd18a6267504d631b204fe525668a0b21f0695ebe2e59cead1437bea4cb7d5270c19f5832a4ff2a8e
• Download URL:
  https://stacks.cdc.gov/view/cdc/220027/cdc_220027_DS1.pdf
• File Type:
  [PDF - 775.93 KB ]