Data on corresponding solid liquid equilibria of sulfanilic acid in different organic solvents are essential for industrial design and further theoretical studies. In this study, the solubilities of sulfanilic acid were measured in methanol, ethanol, 2-propanol, acetone, acetonitrile, formic acid, and acetic acid with the temperature range of (278.15 to 328.15) K by the analytical stirred-flask method under atmospheric pressure. For the temperature range investigated, the solubility of sulfanilic acid in the solvents increased with increasing temperature. The thermodynamic models, such as the van t Hoff model, the modified Apelblat model, and the Buchowski Ksiazaczak ?h model were investigated to describe the experimental data. It was found that the modified Apelblat model was the most suitable for predicting the solubility behavior of sulfanilic acid with increasing temperature. The calculated thermodynamic parameters indicated that in each studied solvent the dissolution process of sulfanilic acid is endothermic.
Compounds
#
Formula
Name
1
C6H7NO3S
4-aminobenzenesulfonic acid
2
CH4O
methanol
3
C2H6O
ethanol
4
C3H8O
propan-2-ol
5
C3H6O
acetone
6
C2H3N
acetonitrile
7
CH2O2
formic acid
8
C2H4O2
acetic acid
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.