Components:

(1) Water, H₂O; [7732-18-5] NIST WebBook
(2) 1,1,2,2-Tetrabromoethane, C₂H₂Br₄; [79-27-6] NIST WebBook

Original Measurements

Hutchinson, C. A.; Lyon, A. M.; Columbia University Report A-745, July 1, 1943.

Variables:

Ambient temperature: 298 K

Prepared by:

A.L. Horvath

Method/Apparatus/Procedure:

A mixture of 1 to 15 volume ratio of water and 1,1,2,2-tetrabromoethane was introduced into an equilibration flask and then lowered into a waterbath thermostat. The assembly was shaken mechanically for about 90 minutes at constant temperature. The amount of water in the organic phase was determined by a modified Karl Fischer titration method. The determination was done in triplicate. This procedure description was taken from a secondary source.¹ The original university report is nolonger available.

Source and Purity of Materials:

1. Distilled.
2. Source not given. Purified and dried before use.

Estimated Errors:

Ambient temperature: ±0.05 K.
Mass concentration (m/v) (1): ±3.0 × 10^-6 av. dev.

References

¹ Eidinoff, M. L.; Joris, G. G.; Taylor, H. S.; Urey, H. C.; eds., Production of Heavy Water (McGraw_Hill, New York, 1955), p. 129.