Compilation - Acetonitrile with Potassium iodide (IUPAC SDS Volume 78)
SDS Volume (5143)
Volume 78. Acetonitrile Binary Systems, p None
Original Measurements
Walden, P.; Z. Phys. Chem. 55U, 683-720 (1906).
Variables:
Room Temp: 273 and 298 $\pu{K}$
Prepared by:
Method/Apparatus/Procedure:
The analytical method was used. Method A: 10 to 20 mL of (1) and an appropriate amount of fine dry (2) were placed in a glass retort in a thermostat and stirred for many hours. Aliquots of the saturated solution were taken by pipette for titration. Method B: 15 to 25 mL of (1) and finely divided (2) were equilibrated at 40 °C with intensive stirring for an hour. The flask was then placed in a thermostat (25 or 0 °C) and stirred for 2 hours. After this, stirring was halted and the flask kept at the given temperature for 17 to 18 hours. The saturated solutions were then sampled and titrated.
Source and Purity of Materials:
- Not specified.
- Not specified.
Estimated Errors:
Ambient temperature: Not specified.
Mass concentration (m/v) (1): Not specified.
Components:
- Acetonitrile, $\ce{ C2H3N }$; [75-05-8] NIST WebBook
- Potassium iodide, $\ce{ KI }$; [7681-11-0] NIST WebBook
Experimental Data
Solubility of potassium iodide (2) in acetonitrile (2)
| $T$ (°C) | $T$ ($\pu{K}$) | 100w2 | $x_{2}$ |
|---|---|---|---|
| 0.0 | 273.2 | 2.259 | 5.7 x 10-3 |
| 25.0 | 298.2 | 2.003 | 5.0 x 10-3 |
