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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Ethene with Methylbenzene (toluene)
Components:
(1) Ethene; C2H4; [74-85-1]
NIST Chemistry WebBook
for detail
(2) Methylbenzene (toluene); C7H8; [108-88-3]
NIST Chemistry WebBook
for detail
Original Measurements:
Waters, J.A.; Mortimer, G.A.; Clements, H.E., J. Chem. Eng. Data, 1970, 15, 174-176.
Variables:
Temperature = 250 K to 295 K
Pressure = 101.325 kPa
Prepared By:
W. Hayduk
Experimental Remarks:
A,B,C,
Refers to methods used as described below.
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
t/°C
T/K
Pressure [mm]
Pressure Note
α [cm
3
gas NTP (cm
3
solvent)
–1
]
α Note
Mole Fraction (x
1
)
x
1
Note
Solubility
Solubility Note
−23
250.15
760.0
mercury
6.894
2
0.0306
3, 1 Ave. Mole Fraction
0.311 B
3 Mole/litre
−20
253.15
760.0
mercury
6.320
2
0.0280
3, 1 Ave. Mole Fraction
0.283 B
3 Mole/litre
−10
263.15
222.6
mercury
5.310
2
0.0236
3, 1 Ave. Mole Fraction
0.237 A
3 Mole/litre
−10
263.15
359.9
mercury
5.240
2
−
3, 1 Ave. Mole Fraction
0.234 A
3 Mole/litre
−10
263.15
475.6
mercury
5.270
2
−
3, 1 Ave. Mole Fraction
0.235 A
3 Mole/litre
0
273.15
243.3
mercury
4.450
2
0.0201
3, 1 Ave. Mole Fraction
0.199 A
3 Mole/litre
0
273.15
393.6
mercury
4.380
2
−
3, 1 Ave. Mole Fraction
0.196 A
3 Mole/litre
0
273.15
520.1
mercury
4.400
2
−
3, 1 Ave. Mole Fraction
0.196 A
3 Mole/litre
0
273.15
594.5
mercury
4.410
2
−
3, 1 Ave. Mole Fraction
0.196 A
3 Mole/litre
0
273.15
765.0
mercury
4.412
2
−
3, 1 Ave. Mole Fraction
0.197 B
3 Mole/litre
0
273.15
765.0
mercury
4.444
2
−
3, 1 Ave. Mole Fraction
0.199 C
3 Mole/litre
10
283.15
260.9
mercury
3.850
2
0.0176
3, 1 Ave. Mole Fraction
0.172 A
3 Mole/litre
10
283.15
422.6
mercury
3.770
2
−
3, 1 Ave. Mole Fraction
0.168 A
3 Mole/litre
20
293.15
275.4
mercury
3.420
2
0.0159
3, 1 Ave. Mole Fraction
0.153 A
3 Mole/litre
20
293.15
445.6
mercury
3.360
2
−
3, 1 Ave. Mole Fraction
0.150 A
3 Mole/litre
22
295.15
760.0
mercury
3.189
2
0.0149
3, 1 Ave. Mole Fraction
0.142 B
3 Mole/litre
Notes:
1
Calculated by compiler.
2
Although no specified in paper, compiler confirms that
a
as given is the Bunsen coefficient.
3
Solubility, s and
x
1
, are calculated for a gas partial pressure of 101.325 kPa.
Method/Apparatus/Procedure:
Two of three methods used involved measuring the pressure change in a gas reservoir of known volume. The third involved weighing.
Method A: Two glass bulbs were connected by tubing fitted with a pressure transducer, gas supply and vacuum lines. The solvent (100 cm
3
) was degassed in one bulb equipped with a stirrer using liquid nitrogen. Gas at a higher pressure in the second bulb was quantitatively charged into the first bulb at the appropriate temperature. The final pressure in the equilibration flask was measured.
Method B: For larger quantities of gas a stainless steel supply bomb connected to a pressure gauge was filled to about 12 atm. Equilibration was in a glass flask equipped with a mercury manometer.
Method C: The increase in mass of the solution was measured.
Source and Purity of Materials:
1. Ethene, Monsanto polymerization grade, minimum purity 99.85%.
2. Methyl benzene, Fisher spectrophotometric grade; purity not specified.
Estimated Errors:
Solubility: δ
s
/
s
= 0.02
Temperature: δ
T
/K = ± 0.01 (A); ± 0.02 (B)