SDS Volume (2471)

Volume 60. Halogenated Methanes with Water, p None

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

Method/Apparatus/Procedure:

The original method and apparatus for the determination of Henry's law constant, as described by Mackay, et al. [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.

References

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