ABSTRACT

Density data for dilute aqueous solutions of four aliphatic ethers (2,5-dioxahexane, 3,5-dioxaheptane, 3,6-dioxaoctane, and 2,5,8-trioxanonane) and one ether-alcohol (3,6-dioxa-1-heptanol) are presented together with partial molar volumes at infinite dilution calculated from the experimental data. The measurements were performed at temperatures from T = 298 K up to either T = 443 K (3,5-dioxaheptane) or T = 573 K (other solutes) and at pressures close to the saturated vapour pressure of water, at pressures between 15 and 20 MPa and at p = 30 MPa. The data were obtained using a high-temperature high-pressure flow vibrating-tube densimeter.

Compounds

#	Formula	Name
1	C5H12O2	diethoxymethane
2	C6H14O2	1,2-diethoxyethane
3	C6H14O3	2,5,8-trioxanonane
4	C5H12O3	2-(2-methoxyethoxy)ethanol
5	H2O	water
6	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	Phase	Method	#Points
POMD	1 5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Molality, mol/kg - 1; Liquid	Liquid	VIBTUB:UFactor:0.5	280
POMD	2 5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Molality, mol/kg - 2; Liquid	Liquid	VIBTUB:UFactor:0.5	405
POMD	3 5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Molality, mol/kg - 3; Liquid	Liquid	VIBTUB:UFactor:0.5	279
POMD	4 5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Molality, mol/kg - 4; Liquid	Liquid	VIBTUB:UFactor:0.5	307
POMD	6 5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Molality, mol/kg - 6; Liquid	Liquid	VIBTUB:UFactor:0.5	272

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Partial molar volumes of organic solutes in water. XVIII: Selected polyethers(aq) and 3,6-dioxa-1-heptanol(aq) at T = (298 to 573) K and at pressures up to 30 MPa

Cibulka, I.[Ivan], Hnedkovsky, L.[Lubomir], Marek, T.[Tomas]

ABSTRACT