American Society for Testing and Materials (ASTM) Method E 1782-08, Standard Test Method for Determining Vapor Pressure by Thermal Analysis recommends use of hermetic-type sealable sample pans with a single 50 75 m pinhole in the lid for pressures between 5 kPa and 2 MPa. At pressures below 5 kPa using the recommended pinhole range, boiling endotherms become increasingly broad. Earlier studies demonstrated qualitative improvement in endotherm sharpness with use of larger pinholes (up to 350 m) at pressures below 5 kPa. In the current work, the vapor pressure of 1-octanol was determined in accordance with ASTM E 1782-08 using pinholes ranging from 75 to 350 m from atmospheric pressure down to 0.197 kPa. These results clearly indicate that vapor pressure data in good agreement with the literature can be produced for 1-octanol at pressures as low as 0.2 kPa if pinhole sizes up to 350 m are used; the results are comparable to those generated using the current ASTM-recommended pressure and pinhole parameters.
Compounds
#
Formula
Name
1
C8H18O
octan-1-ol
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.