IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet 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:
   Sada, E.; Kito, S.; Ito, Y., J. Chem. Eng. Data 1975, 20, 373-5.

 Variables:
   Temperature = One temperature: 25 °C

 Prepared By:
   A. Maczynski

 Experimental Remarks:
   The solubility of toluene in water at 25 °C was reported to be 0.5633 mL(1)/1000 mL (2).

 Experimental Data:   (Notes on the Nomenclature)
   Method/Apparatus/Procedure:
   Sudan IV was used to dye (1). The eperimental apparatus and procedure used in this work were similar to those of Sobotka and Khan (ref 1). To make the measurements more accurate, the apparatus used consisted of a 1-liter dissolution flask and a 2-mL microburet. The scale was calibrated in advance by use of mercury. The dissolution flask was immersed in a water bath controlled thermostatically at 25°C. To avoid condensation of (1) from the gas phase, the temperature of gas phase in the dissolution flask was kept 1°C higher than that of the liquid phase. The dissolution flask and the microburet were connected tightly.

 Source and Purity of Materials:
   (1) source not specified; reagent grade; used as received; purity not specified.
   (2) pure.

 Estimated Errors:
   Solubility: less than 0.008 mL(1)/1000 mL sln (type of error not specified)
   Temperature: ± 0.01 K

 References:
   1Sobotka, H.; Kahn, J. J. Am. Chem. Soc. 1948, 53, 2935.