SDS Volume (3090)

Volume 67. Halogenated Ethanes and Ethenes with Water, p 489

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 are described elsewhere [1]. The general procedure was to add an excess quantity of 1,1-dichloroethene 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. The 1,1-dichloroethene was stripped isothermally from the solution at a know gas flow rate. The Henry's law constant was calculated fromthe log of the concentration versus time plot. The experimental data values are averages of two or more replicates.

Source and Purity of Materials:

1. Purest quality available, used as received, stated purity greater than 99%.
2. Distilled and deionized.

Estimated Errors:

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