3-Methylpentane and 3-Methylheptane. Low-Temperature Thermodynamic Properties

Details

• Personal Author:
  Finke HL ; Messerly JF
• Description:
  The low-temperature thermal properties of 3-methylpentane and 3-methylheptane were measured by adiabatic calorimetry from 10 to 330 K and 10 to 380K, respectively. Properties measured included the heat capacity of the condensed phases, enthalpy of fusion, triple point temperature, and purity of sample. The results were used to calculate the following thermodynamic functions at selected temperatures for the solid and liquid phases: - Gs(T) - H degrees (0) /T, Hs(T) - H degrees (0) /T, Hs(T) - H degrees (0), Ss, and Cs. The entropies in the ideal gas state at 298.15 K were computed, and methylene increments of 7.69 calth K-1 mol-1 for the liquid state and 9.23 calth K-1 mol-1 for the vapor state were derived. Crystallization of the 3-methylpentane sample was induced (apparently for the first time) by cooling the liquid through the liquid-to-glass transition temperature (about 77 K), followed by slow warming to temperatures between the transition and the triple point (110.25 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
• Pages in Document:
  247-257
• Volume:
  5
• Issue:
  2
• NIOSHTIC Number:
  nn:10010583
• Citation:
  J Chem Thermodyn 1973 Mar; 5(2):247-257
• CAS Registry Number:
  3-Methylpentane (CAS RN 96-14-0)
• Federal Fiscal Year:
  1973
• 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-512:9bb2c1ca32bdc48f081ecdd0998ae4fddec6ff500e19d9835b51676c8351e5f22b1bdd4a383c4c5385182e58b8886510accee7ffa2ed9b9210e9e44fa08ffda5
• Download URL:
  https://stacks.cdc.gov/view/cdc/220056/cdc_220056_DS1.pdf
• File Type:
  [PDF - 552.45 KB ]