ABSTRACT

Density values for dilute aqueous solutions of five cyclic ethers obtained using the Anton Paar DSA 5000 vibrating-tube densimeter and the laboratory-made flow densimeter are presented together with partial molar volumes at infinite dilution (standard partial molar volumes) calculated from the measured results. The cyclic ethers were either five-members cycles with one or two oxygen atoms (oxolane, 1,3-dioxolane) or six-members cycles with one, two, or three oxygen atoms (oxane, 1,4-dioxane, 1,3,5-trioxane). The measurements were performed at temperatures from T = 278 K up to T = 373 K and at either atmospheric pressure or at p = 0.5 MPa. The group contribution method is proposed and values of group contributions are evaluated. Standard partial molar volumes predicted for several other cyclic ethers including large cycles (crown ethers) are compared with available data from the literature.

Compounds

#	Formula	Name
1	C4H8O	tetrahydrofuran
2	H2O	water
3	C3H6O2	1,3-dioxolane
4	C5H10O	tetrahydropyran
5	C4H8O2	1,4-dioxane
6	C3H6O3	1,3,5-trioxane

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	Phase	Method	#Points
POMD	1 2	Mass density, kg/m3 ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Liquid	Vibrating tube method	153
POMD	3 2	Mass density, kg/m3 ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Liquid	Vibrating tube method	214
POMD	4 2	Mass density, kg/m3 ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Liquid	Vibrating tube method	113
POMD	5 2	Mass density, kg/m3 ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid Molality, mol/kg - 5; Liquid	Liquid	Vibrating tube method	155
POMD	6 2	Mass density, kg/m3 ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid Molality, mol/kg - 6; Liquid	Liquid	Vibrating tube method	175

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Partial molar volumes of organic solutes in water. XXI: Cyclic ethers at temperatures T = (278 to 373) K and at low pressure

Cibulka, I.[Ivan], Alexiou, C.[Christodoulos]

ABSTRACT