IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet 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:
   Pavia, R.A., "The Solubility of Water in Benzene", M.S. Thesis, 1958, North Carolina State College, Raleigh, N.C., U.S.A.

 Variables:
   Temperature = 9.3-65 °C

 Prepared By:
   C. Tsonopoulos and G.T. Hefter

 Experimental Data:   (Notes on the Nomenclature)
  
Solubility of water in benzene
t/°CPressure [mm Hg]g2/100 g solution (compiler)103 * Mole Fraction x2
9.288.7740.041171.783
20.0017.5350.059892.592
20.0017.5350.060762.629
30.1732.1360.083183.597
40.1555.7640.112164.845
49.9792.370.152226.567
59.90148.700.20108.657
65.00187.540.22619.730
 Notes:
   Table 1  a  Average of three separate analyses.
Results were represented with a "probable deviation of 0.8%" by the equation log10 (100 s) = 0.117135 + 0.5162095 log10 ps1 + 0.0127866 (log10 ps1)2 where s is the solubility of water in benzene in g(2)/100 g sln and ps1 is the equilibrium vapour pressure of the solution.

 Method/Apparatus/Procedure:
   Water and benzene were equilibrated in a 4-L pyrex vessel fitted with a stirrer. Equilibration typically required about 100 h of stirring. Care was taken to avoid condensation of water on the vessel lid and selective absorption of water on the glass walls. Samples of analysis were withdrawn by air pressure. Water was determined by Karl Fischer titration.

 Source and Purity of Materials:
   (1) Distilled in a tinned Barnstead still (specific conductivity 5-20 x 10-7 ohm-1
   (2) Allied Chemical: purified by triple fractional crystallization; purrity 99.99 mol %; n250 = 1.49806.

 Estimated Errors:
   Solubility: ± 1% relative; type of error not stated
   Temperature: ± 0.01°C