ABSTRACT

Densities and speed of sound of dilute aqueous solutions of three sodium sulfonamides structurallyrelated, namely, sodium sulfadiazine (NaSD), sodium sulfamerazine (NaSMR) and sodium sulfamethazine (NaSMT) were measured as a function of molal concentration at various temperatures (278.15 308.15) K. Standard molar quantities and related properties were calculated and the results were interpreted in terms of structural effects, and solute-solvent interactions. Results suggest that these sulfonamides are acting as structure makers of the water-structure.

Compounds

#	Formula	Name
1	C10H9N4NaO2S	sodium ((4-aminophenyl)sulfonyl)(pyrimidin-2-yl)amide
2	C11H11N4NaO2S	sodium ((4-aminophenyl)sulfonyl)(4-methylpyrimidin-2-yl)amide
3	C12H13N4NaO2S	sodium ((4-aminophenyl)sulfonyl)(4,6-dimethylpyrimidin-2-yl)amide
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.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	1 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	98
POMD	1 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	98
POMD	2 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	98
POMD	2 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	98
POMD	3 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	98
POMD	3 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Single path-length method	98

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Volumetric and acoustic properties of some sodium sulfonamides in dilute aqueous solutions at several temperatures

Rodriguez, Gerson A., Martinez, Fleming, Vargas, Edgar F.

ABSTRACT