Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Sublimation Pressure and Vapor Molecular Weight of Pentaerythritol Tetranitrate

Lau, K. H.[Kai H.], Hildenbrand, D. L.[Donald L.], Crouch-Baker, S.[Steven], Sanjurjo, A.[Angel]
J. Chem. Eng. Data 2004, 49, 3, 544-546
ABSTRACT
The sublimation pressure of crystalline pentaerythritol tetranitrate has been determined over the temperature range (356 to 382) K by the torsion-effusion method. From simultaneous mass-loss determinations, the molecular weight of effusing vapor was found to be in accord with that of monomeric C(CH2ONO2)4. Effusing vapor was also examined by mass spectrometry, extending the temperature-pressure range down to 302 K. The temperature dependence of pressure, determined by both torsion and mass-spectrometric methods, yielded enthalpies of sublimation in close agreement at (157.4 ? 3.2) kJ?mol-1. Earlier pressure measurements in the literature are lower by nearly a factor of 3, and the corresponding second-law sublimation enthalpy is also significantly lower.
Compounds
# Formula Name
1 C5H8N4O12 2,2-bis(hydroxymethyl)-1,3-propanediol tetranitrate
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Vapor or sublimation pressure, kPa ; Crystal
  • Temperature, K; Crystal
  • Crystal
  • Gas
  • KNUDSEN:UFactor:2
  • 27