SDS Volume (5086)
Volume 78. Acetonitrile Binary Systems, p None
Original Measurements
Sedgwick, R. S.; Hoerr, C. W.; Harwood, H. J.; J. Org. Chem. 17, 327 (1952).
Variables:
Room Temp: 273 - 304 $\pu{K}$
Prepared by:
Method/Apparatus/Procedure:
The synthetic method was used. The solubilities were determined by observing visually the temperature at which crystals appear upon cooling and dissolve upon heating solutions containing known concentrations of solutes. The procedure and equipment were described elsewhere [1].
Source and Purity of Materials:
- Source not specified; best grade; freshly distilled.
- Prepared by direct esterification of highly purified fatty acid with the appropriate alcohol; fractionated under a vacuum in a Stedman-packed column; FP = 28.90°C.
Estimated Errors:
Ambient temperature: Not specified.
Mass concentration (m/v) (1): Not specified.
References
1 Hoerr, C. W.; Binkerd, E. F.; Pool, W. O.; Ralston, A. W.; J. Org. Chem. 9, 68-80 (1944).
Components:
- Acetonitrile, $\ce{ C2H3N }$; [75-05-8] NIST WebBook
- Methyl hexadecanoate, $\ce{ C17H34O2 }$; [112-39-0] NIST WebBook
Experimental Data
The solubilities of acetonitrile (1) and methyl hexadecanoate (2) in mass percent including the region of immisciblity over the indicated temperature range were reported in graphical form and in a table. Monotectic equilibrium occurs at 23.3°C (296.5 K, compiler). The upper critical solution temperature was reported to be 31.0°C (304.2 K, compiler).
Mutual solubility of acetonitrile (1) and methyl hexadecanoate (2)
| $T$ (°C) | $T$ ($\pu{K}$) | w1 | MR2 (g1/100 g2) | $x_{1}$ |
|---|---|---|---|---|
| 0.0 | 273.2 | - | <0.1 | - |
| 10.0 | 283.2 | - | 0.9 | - |
| 10.2 | 283.4 | - | - | - |
| 15.0 | 288.2 | - | - | - |
| 19.9 | 293.1 | - | - | - |
| 20.0 | 293.2 | - | 7.1 | - |
| 22.1 | 295.3 | - | - | - |
| 23.5 | 296.7 | 29.8 | - | 0.737 |
| 24.2 | 297.4 | 17.3 | - | 0.580 |
| 25.3 | 298.5 | 8.4 | - | 0.377 |
| 25.8 | 299.0 | - | - | - |
| 27.4 | 299.6 | 34.0 | - | 0.772 |
| 29.0 | 302.2 | - | - | - |
| 30.0 | 303.2 | - | 42.5 | - |
| 30.7 | 303.9 | 45.2 | - | 0.845 |
| 0.0 | 273.2 | >0.999 | <0.1 | 0.999 |
| 10.0 | 283.2 | 99.1 | 0.9 | 0.998 |
| 10.2 | 283.4 | 99.0 | - | 0.998 |
| 15.0 | 288.2 | 97.6 | - | 0.996 |
| 19.9 | 293.1 | 94.5 | - | 0.991 |
| 20.0 | 293.2 | 93.4 | 7.1 | 0.989 |
| 22.1 | 295.3 | 90.0 | - | 0.983 |
| 23.5 | 296.7 | - | - | - |
| 24.2 | 297.4 | - | - | - |
| 25.3 | 298.5 | - | - | - |
| 25.8 | 299.0 | 83.1 | - | 0.970 |
| 27.4 | 299.6 | - | - | - |
| 29.0 | 302.2 | 76.7 | - | 0.956 |
| 30.0 | 303.2 | 70.2 | 42.5 | 0.940 |
| 30.7 | 303.9 | 62.0 | - | 0.915 |
(a) Solid-liquid equilibrium.
(b) Liquid-liquid equilibrium.
(c) These data were extracted by the compiler from the published graphs.
