Components:

(1) Toluene, C₇H₈; [108-88-3] NIST WebBook
(2) Water, H₂O; [7732-18-5] NIST WebBook

Original Measurements

Schwarz, F. P.; Anal. Chem. 1980, 52, 10-15.

Variables:

Ambient temperature: 23.5 °C

Prepared by:

M.C. Haulait-Pirson

Method/Apparatus/Procedure:

An elustion chromatography method was used where (1) was the stationary phase and (2) the mobile phase. A transparent column was packed with an inert support (chromosorb P) coated with a known amount of the liquid solute (1). This solute column was connected to a water reservoir (connected to a compressed gas regulator). Water was forced through the column by the pressure of the compressed gas (ca. 14 kPa). As the total volume of water flowing through the column increased, a solute depleted zone, different in color from the stationary phase, developed and increased in length. The solubility is calculated from the amount of solute removed from the column, i.e. length of the solute depleted zone, and the volume of water passed through the column. Many details about preparation of the solute column and calcuation are given in the paper.

Source and Purity of Materials:

1. 99.9% purity used without further purification
2. Distilled

Estimated Errors:

Ambient temperature: ±1.5°C
Mass concentration (m/v) (1): ±1.5% (average std. dev.)