ABSTRACT

The interactions of phosphate salts like disodium hydrogen phosphate (Na2HPO4) and dipotassium hydrogen phosphate (K2HPO4) with 1-hexyl-3-methylimidazolium chloride ([C6mim][Cl]) as a function of temperature have been investigated by combination of volumetric and acoustic measurements. Densities, ?, and speeds of sound, u, for phosphate salts in aqueous solutions of 1-hexyl-3-methylimidazolium chloride have been measured at T = (288.15, 293.15, 298.15, 303.15, 308.15) K and atmospheric pressure. The apparent molar volume, limiting apparent molar volume and standard partial molar volumes of transfer for phosphate salts from water to aqueous 1-hexyl-3-methylimidazolium chloride solutions have been calculated from density data. Apparent molar isentropic compression, limiting apparent molar isentropic compression and standard partial molar isentropic compression of transfer have been calculated from speeds of sound data. The UV absorption studies have also made in this study. The results have been explained in terms of competing patterns of interactions of cosolvent and the solute.

Compounds

#	Formula	Name
1	C10H19ClN2	1-hexyl-3-methylimidazolium chloride
2	HNa2O4P	disodium hydrogen phosphate
3	HK2O4P	dipotassium hydrogen phosphate
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	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	5
POMD	4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	5
POMD	2 4 1	Mass density, kg/m3 ; Liquid	Solvent: Molality, mol/kg - 1; Liquid Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	210
POMD	2 4 1	Speed of sound, m/s ; Liquid	Solvent: Molality, mol/kg - 1; Liquid Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	210
POMD	4 3 1	Mass density, kg/m3 ; Liquid	Solvent: Molality, mol/kg - 1; Liquid Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	205
POMD	4 3 1	Speed of sound, m/s ; Liquid	Solvent: Molality, mol/kg - 1; Liquid Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	210
POMD	2 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	65
POMD	2 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	65
POMD	4 1	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 1; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	10
POMD	4 1	Speed of sound, m/s ; Liquid	Molality, mol/kg - 1; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid Frequency, MHz; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	15
POMD	4 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	65
POMD	4 3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	65

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

Interionic Interactions of Aqueous Mixtures of Ionic Liquid 1-Hexyl-3-methylimidazolium Chloride with Phosphate Salts at T = (288.15 to 308.15) K: Volumetric, Acoustic and UV Absorption Studies

Kumar, H.[Harsh], Chadha, C.[Chanda]

ABSTRACT