The solubilities of sodium 2,6-naphthalene disulfonate and sodium 2,7-naphthalene disulfonate in aqueous solutions of sulfuric acid were measured in the temperature range from (283.15 to 333.15) K by a steady-state method. The solubility of sodium 2,6-naphthalene disulfonate or sodium 2,7-naphthalene disulfonate increases with the increase in temperature from (283.15 to 333.15) K. With the increase in sulfuric acid concentrations, the solubilities of sodium 2,6-naphthalene disulfonate and sodium 2,7-naphthalene disulfonate decrease. At the same temperature and in the same composition of sulfuric acid + water solvent mixtures, the solubility of sodium 2,7-naphthalene disulfonate is larger than that of sodium 2,6-naphthalene disulfonate. Results of these measurements were correlated by a modified Apelblat equation.
Compounds
#
Formula
Name
1
C10H6Na2O6S2
sodium naphthalene-2,6-disulfonate
2
C10H6Na2O6S2
sodium naphthalene-2,7-disulfonate
3
H2O4S
sulfuric acid
4
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.