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:
   Wing, J.; Johnston, W.H., J. Am. Chem. Soc. 1957, 79(4), 864-5.

 Variables:
   Temperature = One temperature: 25 °C

 Prepared By:
   A. Maczynski and Z. Maczynska

 Experimental Remarks:
   The solubility of water in benzene at 25 °C was reported to be 0.0554 ml (2)/100 mL sln and 0.0635 mL (2)/100 g(1).
The corresponding mass percent and mole fraction, x2, calculated by the compilers are 0.114 g(2)/100 g sln and 4.9 x 10-3. The assumption that 1 dm3 sln = 874 g sln was used in the calculation.

 Experimental Data:   (Notes on the Nomenclature)
   Method/Apparatus/Procedure:
   A small amount of (2) was equilibrated with 20 mL of (1) using a Teflon stirrer in a 100 mL flask in a Sargent constant temperature bath. At the end of two hours, the mixture was poured into a test tube immersed in the bath and the organic phase separated from water by gravitation. The determination of THO in the organic phase was done by isotopic dilution with a large excess of H2O. The tritium activities in the tritiated water samples were determined by the acetylene method described in ref 1.

 Source and Purity of Materials:
   (1) source not specified, chemical grade; redistilled in a column of 50 theoretical plates; purity not specified.
   (2) Tracerlab, Inc., tritiated water with an activity of approximately 1 microCi/mL.

 Estimated Errors:
   Solubility: 0.9% (st. dev. From 6 determinations).
   Temperature: ± 0.02 K

 References:
   1Wing, J; Johnson, W.H. Science 1955, 121, 674.