ABSTRACT

A series of sodium isophthalic acid derivatives 5-R-Na2bdc*nH2O (H2bdc = isophthalic acid, R = H, NH2, OH, CH3, NO2, n = 0.5, 1, 1, 1, 1) were synthesized in water. Molar enthalpies of dissolution (?solHm) of the compounds in double-distilled water under various molalities were determined at 298.15 K by an RD496-2000 type microcalorimeter. Following Pitzer s theory, the molar enthalpy of dissolution of the title compounds at infinite dilution (?solHm8) and Pitzer s parameters (ssMX(0)L and ssMX(1)L) were obtained. The values of the title compounds of relative apparent molar enthalpies (?solH), relative partial molar enthalpies (?solHL,2), and relative partial molar enthalpies (?solHL,1) of the solvent at different concentrations c/(mol*L-1) were derived from the experimental values of the enthalpies of dissolution of the compounds, respectively.

Compounds

#	Formula	Name
1	C8H7NNa2O5	sodium 5-aminoisophthalate monohydrate
2	C8H6Na2O6	sodium 5-hydroxyisophthalate monohydrate
3	C9H8Na2O5	sodium 5-methylisophthalate monohydrate
4	C8H5NNa2O7	sodium 5-nitroisophthalate monohydrate
5	C16H10Na4O9	sodium isophthalate hemihydrate
6	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.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	1 6	Molar enthalpy of solution, kJ/mol ; Liquid	Molality, mol/kg - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Calvet calorimetry	20
POMD	2 6	Molar enthalpy of solution, kJ/mol ; Liquid	Molality, mol/kg - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Calvet calorimetry	20
POMD	6 3	Molar enthalpy of solution, kJ/mol ; Liquid	Molality, mol/kg - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Calvet calorimetry	20
POMD	4 6	Molar enthalpy of solution, kJ/mol ; Liquid	Molality, mol/kg - 4; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Calvet calorimetry	20
POMD	5 6	Molar enthalpy of solution, kJ/mol ; Liquid	Molality, mol/kg - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Calvet calorimetry	20

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Enthalpy of Solution of 5-R-Na2bdc*nH2O (H2bdc = Isophthalic Acid, R = H, NH2, OH, CH3, NO2) at 298.15 K

Wang, Z.-J.[Zhu-Jun], Chen, S.-P.[San-Ping], Di, [You-Ying], Yang, Q.[Qi], Gao, S.-L.[Sheng-Li]

ABSTRACT