The vapour pressures of n-pentane have been measured using comparative ebulliometry with water as the reference substance. The measurements cover the temperature and pressure ranges 309 K and 102 kPa to 456 K and 2728 kPa. When combined with selected literature results, the range was extended downwards to a temperature and pressure of 268.8 K and 19.9 kPa and the combined data sets were correlated by a Wagner-type equation with a standard deviation of 18 Pa in the vapour pressure. The critical pressure was treated as an adjustable parameter and the value pc = 3367.4 kPa was obtained using a selected critical temperature, Tc = 469.7 K. The calculated normal boiling temperature was Tb = 309.207 K and an extrapolation to the triple point temperature Ttp = 143.48 K predicted a pressure of ptp = 0.078 Pa.
Compounds
#
Formula
Name
1
C5H12
pentane
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.