ABSTRACT

We determined apparent molar volumes V/ at 278.15 6 (T/K) 6 368.15 and apparent molar heat capacities Cp,/ at 278.15 6 (T/K) 6 393.15 at p = 0.35 MPa for aqueous solutions of tetrahydrofuran at m from (0.016 to 2.5) mol Ae kg 1, dimethyl sulfoxide at m from (0.02 to 3.0) mol Ae kg 1, 1,4-dioxane at m from (0.015 to 2.0) mol Ae kg 1, and 1,2-dimethoxyethane at m from (0.01 to 2.0) mol Ae kg 1. Values of V/ were determined from densities measured with a vibrating-tube densimeter, and values of Cp,/ were determined with a twin fixed-cell, differential, temperature-scanning calorimeter. Empirical functions of m and T for each compound were fitted to our V/ and Cp,/ results.

Compounds

#	Formula	Name
1	C4H8O	tetrahydrofuran
2	H2O	water
3	C2H6OS	dimethyl sulfoxide
4	C4H8O2	1,4-dioxane
5	C4H10O2	1,2-dimethoxyethane

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 2	Apparent molar heat capacity, J/K/mol ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Extra sensitive DSC	189
POMD	1 2	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 1; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:4	88
POMD	3 2	Apparent molar heat capacity, J/K/mol ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Extra sensitive DSC	216
POMD	3 2	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 3; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:4	92
POMD	4 2	Apparent molar heat capacity, J/K/mol ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Extra sensitive DSC	192
POMD	4 2	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 4; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:4	88
POMD	5 2	Apparent molar heat capacity, J/K/mol ; Liquid	Temperature, K; Liquid Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid	Liquid	Extra sensitive DSC	188
POMD	5 2	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 5; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:4	88

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Apparent molar volumes and apparent molar heat capacities of aqueous tetrahydrofuran, dimethyl sulfoxide, 1,4-dioxane, and 1,2-dimethoxyethane at temperatures from 278.15 K to 393.15 K and at the pressure 0.35 MPa

Swenson, D. M., Blodgett, M. B., Ziemer, S. P., Woolley, E. M.

ABSTRACT