SDS Volume (2321)

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:

Room Temp: 298 $\pu{K}$

Prepared by:

A.L. Horvath

Method/Apparatus/Procedure:

The original method and apparatus for the determination of Henry's law constants, described by Mackay et al. [1], were used. The general procedure was to add an excess quantity of tribromomethane to distilled deionized water and mix the system overnight. A portion of the solution was returned to the stripping vessel. Tribromomethane 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 and was used without further purification, stated purity of > 99%.
2. distilled and deionized.

Estimated Errors:

Ambient temperature: ±0.05 K.
Mass concentration (m/v) (1): ±6% std. dev.

References

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