Direct excess partial molar enthalpies of the two alkoxyamines, 3- ethoxypropan-1-amine (EPA) and 3-butoxypropan-1-amine (BPA) in water, at 298.15 K were obtained in the water-rich region at atmospheric pressure using a semi-adiabatic isoperibol solution calorimeter. Derivatives of these partial molar properties with respect to the composition in these two systems and in this composition region were evaluated aiming to better scrutinize the molecular interactions and the effect of increasing chain length in this composition domain, where interesting features were pointed out by previous volumetric studies. The remarkable effect of hydrolysis in the excess partial molar enthalpies in the EPA system and the results obtained in the waterrich region for both systems complement the interpretations based on limiting partial molar, isobaric expansions and isentropic compressions previously obtained. Changes in aggregation patterns could also be identified.
Compounds
#
Formula
Name
1
C5H13NO
3-ethoxy-1-propanamine
2
C7H17NO
3-butoxy-1-propanamine
3
H2O
water
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.