IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Dichloromethane with Water
Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Dichloromethane; CH2Cl2; [75-09-2]  NIST Chemistry WebBook for detail
Original Measurements:
   Warner, H.P.; Cohen, J.M.; Ireland, J.C., Determination of Henry's Law Constants of Selected Priority Pollutants, U. S. EPA Technical Report, PB87-212684, Cincinnati, OH., July 1987.

 Variables:
   Temperature = 298 K

 Prepared By:
   A. L. Horvath

 Experimental Data:   (Notes on the Nomenclature)
  
t/°CHenry's law constant [m**3 atm mol**-1]102 * Mass Fraction w1 (compiler) 103 * Mole Fraction x1 (compiler)
24.853.19 x 10-31.5993.436
 Method/Apparatus/Procedure:
   The original method and apparatus for the determination of Henry's law constant, as described by Mackay et al. (ref. 1), was used. The general procedure was to add an excess quantity of dichloromethane to distilled deionized water, place the sample in a  thermostat bath, and provide overnight mixing. A portion of this solution was returned to the stripping vessel. Dichloromethane was stripped isothermally from the solution at a known gas flow rate. The Henry's law constant was calculated from the log of the  concentration versus time plot. The experimental data values are averages of two or more replicates.

 Source and Purity of Materials:
   (1) Source not given. Purest quality available, used as received. Stated purity > 99 %.
   (2) Distilled and deionized.

 Estimated Errors:
   Solubility: ± 6 % std. dev.
   Temperature: ± 0.05 K.

 References:
   1 Mackay, D.; Shiu, W. Y.; Sutherland, R. D. Environ. Sci. Technol. 1979, 13, 333.