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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Benzene with Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) Benzene; C6H6; [71-43-2]
NIST Chemistry WebBook
for detail
Original Measurements:
Bohon, R.L.; Claussen, W.F., J. Am. Chem. Soc. 1951, 73, 1571-8.
Variables:
Temperature = 0.4-42.8 °C
Prepared By:
G.T. Hefter
Experimental Data:
(Notes on the Nomenclature)
Solubility of benzene in water
t/°C
g
1
/100 g solution (compiler)
g
1
/100 g soln. Note (compiler)
10
4
* Mole Fraction x
1
(compiler)
0.4
0.174
b
4.01
5.2
0.181
4.17
10.0
0.180
4.15
14.9
0.178
4.10
21.0
0.179
4.13
25.0
0.179
c
4.13
c
25.6
0.179
4.13
30.2
0.184
4.24
34.9
0.189
4.36
42.8
0.200
4.61
Notes:
Table 1
a
Solubilities of (1) in (2) were reported as "optical density" (absorbance) measurements. Solubilities were calculated by the compiler using the Beer-Lambert law, the stated cell path-length (1 cm) and the authors' "extinction coefficients" (absorptivities) and corrected optical densities. This gave a solubility of g(1)/L sln which was then converted to g(1)/100 g sln by assuming a solution density of 1.00 kg/L.
Table 1
b
Data refer to the solubility of solid (1) in (2).
Table 1
c
Given in the original paper as 1.79 g(1)/L sln.
Method/Apparatus/Procedure:
A round-bottmed flask containing about 4 mL of (1) and 400 mL of (2) was evacuated, suspended in a thermostat, shaken for 24h and then allowed to settle for at least another 24h. Next, desired quantities of the water layer were syphoned into 6 glass-stoppered Erlenmeyer flasks. These 6 flasks had previously been tared, partially filled with a suitable amount of diluent water, and reweighed. Weighed portions of the samples were inserted into a quartz cuvette and measured in a Beckman DU spectrophotometer. Absorbances were corrected for absorption of (1) onto the walls of the cuvette.
Source and Purity of Materials:
(1) Baker and Adamson, purified by recrystallization from ethanol, washing, filtering through silica gel then distilling. Purity was determined by refractometry (no values given).
(2) Air-free conductivity water, no other details given.
Estimated Errors:
Solubility: ± 0.5% relative
Temperature: ± 0.02°C