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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Toluene with Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) Toluene; C7H8; [108-88-3]
NIST Chemistry WebBook
for detail
Original Measurements:
Sanemasa, I.; Araki, M.; Deguchi, T.; Nagai, H., Chem. Lett. 1981, 225-8.
Variables:
Temperature = 15-45 °C
Prepared By:
M.C. Haulait-Pirson and G.T. Hefter
Experimental Data:
(Notes on the Nomenclature)
Solubility of toluene in water
t/°C
g
1
/V
2
[g/L]
g
1
/100 g solution
10
4
* Mole Fraction x
1
15
0.533 ± 0.017
0.0533
1.04
15
0.533 ± 0.017
0.0533
1.04
25
0.557 ± 0.007
0.0559
1.09
35
0.587 ± 0.015
0.0590
1.16
45
0.635 ± 0.019
0.0641
1.25
Notes:
Table 1
a
Assuming the solution density to be that of pure water at the same temperature (ref. 1).
Method/Apparatus/Procedure:
The apparatus used for attaining solubility equilibrium is described in detail in the paper. Liquid (1) and redistilled 92) were placed in a vessel and a thermostatted funnel respectively. The solute vapor, generated by bubbling air through the liquid solute was introduced into the funnel and circulated by means of a pump. The circulation rate was 2 L/min. Solubility equilibria were attained within 5 min. Then portions of 10 mL of the aqeuous sln were transferred into funnels to which 10 mL of chloroform had been added. Experimental procedures involved in spectrophotometric measuring the chloroform extracts were not reported. The solubility runs were made such that the temperature of solute reservoir was made to vary while that of solvent phase was held constant. The solubility obeys Henry's law at constant solvent temperature. Solubility values were calculated from Henry's law constants.
Source and Purity of Materials:
(1) analytical reagent grade used as purchased.
(2) redistilled.
Estimated Errors:
Solubility: given above.
References:
1
CRC Handbook of Chemistry and Physics, R.C. Weast, Editor, CRC Press, Florida, 63rd edn., 1982, pF-11.