The vapor pressure of 2-amino-3-methylpyridine was measured in the temperature range of (328.70 to 499.88) K using the boiling point method. The Antoine equation was used to describe the vapor pressure data, and the parameters in the equation were determined by means of the least-square regression method. The deviation of experimental data from the corresponding calculated values was within 0.30 %. On the basis of the equation, the enthalpy of vaporization of 2-amino-3-methylpyridine at normal boiling point (Tb) was obtained from the slope of the plot of ln p vs 1/T. The standard enthalpy of vaporization centsvapH(298.15 K) was estimated by Othmer s method. Using 3-methylpyridine as the standard substance, the value of centsvapH(298.15 K) was found to be 62.58 kJamol-1. A parallel value of centsvapH(298.15 K) was also obtained using benzene as the standard substance. Additionally the Watson relation was employed to verify the value of centsvapH(298.15 K), from which it was shown that the value of the standard enthalpy of vaporization was acceptable.
Compounds
#
Formula
Name
1
H2O
water
2
C6H8N2
2-amino-3-methylpyridine
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.