ABSTRACT

The solubilities of ionic liquids in the ternary systems (ionic liquid + H2O + inorganic salt) were reported at 298.15 K and atmospheric pressure. The examined ionic liquids are [C4mim][PF6] (1-n-butyl-3-methylimidazolium hexafluorophosphate), [C8mim][PF6] (1-n-octyl-3-methylimidazolium hexafluorophosphate), and [C8mim][BF4] (1-n-octyl-3-methylimidazolium tetrafluoroborate). The examined inorganic salts are the chloride-based salts (sodium chloride, lithium chloride, potassium chloride, and magnesium chloride) and the sodium-based salts (sodium thiocyanate, sodium nitrate, sodium trifluoroacetate, sodium bromide, sodium iodide, sodium perchlorate, sodium acetate, sodium hydroxide, sodium dihydrogen phosphate, sodium phosphate, sodium tetrafluoroborate, sodium sulfate, and sodium carbonate). The effects of the cations and the anions of the ionic liquids and of the inorganic salts on the solubility of the ionic liquids in the ternary solutions were systematically compared and discussed.

Compounds

#	Formula	Name
1	C8H15F6N2P	1-butyl-3-methylimidazolium hexafluorophosphate
2	C12H23F6N2P	1-octyl-3-methylimidazolium hexafluorophosphate
3	C12H23BF4N2	1-methyl-3-octylimidazolium tetrafluoroborate
4	ClK	potassium chloride
5	ClLi	lithium chloride
6	Cl2Mg	magnesium chloride
7	BrNa	sodium bromide
8	INa	sodium iodide
9	HNaO	sodium hydroxide
10	H2NaO4P	sodium dihydrogen phosphate
11	NNaO3	sodium nitrate
12	BF4Na	sodium tetrafluoroborate
13	ClNa	sodium chloride
14	C2H3NaO2	sodium ethanoate
15	CNNaS	sodium thiocyanate
16	CNa2O3	sodium carbonate
17	Na2O4S	sodium sulfate
18	Na3O4P	trisodium phosphate
19	ClNaO4	sodium perchlorate
20	C2F3NaO2	sodium trifluoroacetate
21	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	Phase	Method	#Points
POMD	21 1	Molality, mol/kg ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	21 2	Molality, mol/kg ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 2	Cloud Point Method	1
POMD	21 3	Molality, mol/kg ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 3	Cloud Point Method	1
POMD	5 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 5; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	4 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 4; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	21 6 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 6; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	7 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 7; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	8 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 8; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	9 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 9; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	10 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 10; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	11 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 11; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	21 12 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 12; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	13 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 13; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	14 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 14; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	15 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 15; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	16 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 16; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	21 17 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 17; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	18 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 18; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	19 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 19; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	20 21 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 20; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 1	Cloud Point Method	1
POMD	11 21 2	Molality, mol/kg - 2 ; Liquid	Solvent: Molality, mol/kg - 11; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 2	Cloud Point Method	1
POMD	21 17 2	Molality, mol/kg - 2 ; Liquid	Solvent: Molality, mol/kg - 17; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 2	Cloud Point Method	1
POMD	18 21 2	Molality, mol/kg - 2 ; Liquid	Solvent: Molality, mol/kg - 18; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 2	Cloud Point Method	1
POMD	19 21 2	Molality, mol/kg - 2 ; Liquid	Solvent: Molality, mol/kg - 19; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 2	Cloud Point Method	1
POMD	20 21 2	Molality, mol/kg - 2 ; Liquid	Solvent: Molality, mol/kg - 20; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 2	Cloud Point Method	1
POMD	21 12 3	Molality, mol/kg - 3 ; Liquid	Solvent: Molality, mol/kg - 12; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 3	Cloud Point Method	1
POMD	13 21 3	Molality, mol/kg - 3 ; Liquid	Solvent: Molality, mol/kg - 13; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 3	Cloud Point Method	1
POMD	14 21 3	Molality, mol/kg - 3 ; Liquid	Solvent: Molality, mol/kg - 14; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 3	Cloud Point Method	1
POMD	15 21 3	Molality, mol/kg - 3 ; Liquid	Solvent: Molality, mol/kg - 15; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 3	Cloud Point Method	1
POMD	16 21 3	Molality, mol/kg - 3 ; Liquid	Solvent: Molality, mol/kg - 16; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 3	Cloud Point Method	1
POMD	21 17 3	Molality, mol/kg - 3 ; Liquid	Solvent: Molality, mol/kg - 21; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 3	Cloud Point Method	1
POMD	18 21 3	Molality, mol/kg - 3 ; Liquid	Solvent: Molality, mol/kg - 18; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 3	Cloud Point Method	1
POMD	19 21 3	Molality, mol/kg - 3 ; Liquid	Solvent: Molality, mol/kg - 19; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 3	Cloud Point Method	1
POMD	20 21 3	Molality, mol/kg - 3 ; Liquid	Solvent: Molality, mol/kg - 20; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid Crystal - 3	Cloud Point Method	1

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Solubilities of imidazolium-based ionic liquids in aqueous salt solutions at 298.15 K

Peng, X.-M.[Xiao-Ming], Hu, Y.-F.[Yu-Feng], Jin, C.-W.[Chuan-Wei]

ABSTRACT