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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Toluene with Sodium Chloride and Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) Sodium Chloride; NaCl; [7647-14-5]
NIST Chemistry WebBook
for detail
(3) Toluene; C7H8; [108-88-3]
NIST Chemistry WebBook
for detail
Original Measurements:
Sada, E.; Kito, S.; Ito, Y., J. Chem. Eng. Data 1975, 20, 373-5.
Variables:
Temperature = 25 °C
Concentration = Salinity: 29-108 g(3)/kg sln
Prepared By:
M. Kleinschmidt and D. Shaw
Experimental Data:
(Notes on the Nomenclature)
Solubility of toluene in aqueous sodium chloride solutions
t/°C
g
2
/kg
g
2
/kg Note
g
1
/100 g solution
g
1
/100 g soln. Note
10
5
* Mole Fraction x
1
x
1
Note
n
2
/V
1
[mol/L]
25
28.72
a
0.0348
a
6.95
a
0.5011
25
56.14
a
0.0248
a
5.06
a
0.9991
25
82.66
a
0.0182
a
3.76
a
1.4933
25
107.9
a
0.0136
a
2.87
a
1.9933
Notes:
Table 1
a
calculated by compilers using density and other physical data for NaCl solutions from ref 1 and the assumption that the density of (1) is 0.8669 kg/L.
Method/Apparatus/Procedure:
Experimental apparatus and prodecure used similar to those in ref 2.
Toluene stained with 0.1% by weight Sudan IV was added dropwise from a microburet into aqueous salt solution retained in a 1-L dissolution flask which was kept at 25.00° ± 0.01°C in a thermostatically controlled water bath. The aqueous by a magnetic stirring device. Before saturation was reached, the Sudan IV ws precipitated and floated on the surface as a solid. At saturation, the excess toluene appeared as immiscible red liquid droplets suspended in the aqueous solution. To ensure complete saturation, 24 hr was allowed for equilibration.
Source and Purity of Materials:
(1), (2): reagent grade, source not specified.
(3): not specified
Estimated Errors:
Solubility: 0.008 × 10
–3
L (1)/L sln.
References:
1
Weast, R.C. CRC Handbook of Chemistry and PHysics, 59th Ed.
1978
, CRC Press, pp D299 - D300.
2
Sobotka, H.; Kahn, J.
J. Am. Chem. Soc.
1948
, 53, 2935.