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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Ethene with Heptane and Methylbenzene (toluene)
Components:
(1) Ethene; C2H4; [74-85-1]
NIST Chemistry WebBook
for detail
(2) Heptane; C7H16; [142-82-5]
NIST Chemistry WebBook
for detail
(3) Methylbenzene (toluene); C7H8; [108-88-3]
NIST Chemistry WebBook
for detail
Original Measurements:
Leites, I.L.; Ivanovskii, F.P., Khim. Prom. 1962, 9, 653-657.
Variables:
Temperature = 213.15 K, 223.15 K
Pressure = 101.325 kPa
Concentration = 0 - 1.0(
x
3
)
Prepared By:
W. Hayduk
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
Solvent Composition
t/°C
T/K
Henry's law constant, K [atm]
Henry Constant Note
Mole Fraction (x
1
)
x
1
Note
Mole Fraction (x
3
)
x
3
Note
Solubility [(H/mmHg)]
Solubility Note
−60
213.15
9.12
3 (mole fraction)−1
0.110
3
0 (heptane)
1 Toluene
3.841
2 log10
−60
213.15
9.27
3 (mole fraction)−1
0.108
3
0.25
1 Toluene
3.848
2 log10
−60
213.15
9.60
3 (mole fraction)−1
0.104
3
0.50
1 Toluene
3.863
2 log10
−60
213.15
10.45
3 (mole fraction)−1
0.0957
3
0.75
1 Toluene
3.900
2 log10
−60
213.15
13.10
3 (mole fraction)−1
0.0764
3
1.0 (toluene)
1 Toluene
3.998
2 log10
−50
223.15
12.14
3 (mole fraction)−1
0.0824
3
0 (heptane)
1 Toluene
3.965
2 log10
−50
223.15
12.51
3 (mole fraction)−1
0.0800
3
0.25
1 Toluene
3.978
2 log10
−50
223.15
13.04
3 (mole fraction)−1
0.0767
3
0.50
1 Toluene
3.996
2 log10
−50
223.15
14.10
3 (mole fraction)−1
0.0709
3
0.75
1 Toluene
4.030
2 log10
−50
223.15
17.31
3 (mole fraction)−1
0.0578
3
1.0 (toluene)
1 Toluene
4.119
2 log10
Notes:
1
Compositions of two-component solvent solutions are given on a solute free basis.
2
Only graphical results were available; values of log Henry's constant (
H
) were read from an enlarged graph by the compiler.
3
Values of Henry's constant (
H
) and mole fraction solubility (
x
1
) were calculated by the compiler.
Method/Apparatus/Procedure:
A metal cryostat was cooled with dry-ice and acetone and the temperature was controlled to ± 0.05 K.
The equilibration cell was mounted in the cryostat. The solvent was purified by fractional distillation and analyzed by chromatography. Details were not given.
Source and Purity of Materials:
1. Ethene purity was stated to be 99.9%.
2. Heptane was distilled and analyzed by chromatography. Purity not specified.
3. Methylbenzene was distilled and analyzed by chromatography. Purity not specified.
Estimated Errors:
Solubility: δ
x
1
/x
1
= ± 0.01 (Authors)
Temperature: δ
T
/K = ± 0.05