Compilation - Acetonitrile with Alkanes (IUPAC SDS Volume 78)
SDS Volume (5172)
Volume 78. Acetonitrile Binary Systems, p None
Original Measurements
McLure, I. A.; Rodriguez, A. T.; Ingham, P. A.; Steele, J. F.; Fluid Phase Equilib. 8, 271 (1982).
Variables:
Room Temp: 341 - 426 $\pu{K}$
Prepared by:
Method/Apparatus/Procedure:
The synthetic method was used. The UCST was determined in Pyrex tubes of samples containing approximately equal volumes of the two components, the exact amounts being determined by weight. Each sample was thoroughly degassed by several freeze-pump-thaw cycles before being sealed off under vacuum. The heating and cooling rates close to the phase transition were ± 0.1 K/min. The mixtures were stirred by means of a couple of stainless-steel ball bearings activated magnetically. The measurement of temperature was carried out at ambient temperature and above using a mercury-in-glass thermometer.
Source and Purity of Materials:
- Fisons; S. L. R.; purity > 99 mol.%; dried and redistilled before use.
- Dried and redistilled.
Estimated Errors:
Ambient temperature: ±0.5 K.
Components:
- Acetonitrile, $\ce{ C2H3N }$; [75-05-8] NIST WebBook
- Pentane, $\ce{ C5H12 }$; [109-66-0] NIST WebBook
- Hexane, $\ce{ C6H14 }$; [110-54-3] NIST WebBook
- Heptane, $\ce{ C7H16 }$; [142-82-5] NIST WebBook
- Octane, $\ce{ C8H18 }$; [111-65-9] NIST WebBook
- Nonane, $\ce{ C9H20 }$; [111-84-2] NIST WebBook
- Decane, $\ce{ C10H22 }$; [124-18-5] NIST WebBook
- Undecane, $\ce{ C11H24 }$; [1120-21-4] NIST WebBook
- Dodecane, $\ce{ C12H26 }$; [112-40-3] NIST WebBook
- Tetradecane, $\ce{ C14H30 }$; [629-59-4] NIST WebBook
- Hexadecane, $\ce{ C16H34 }$; [544-76-3] NIST WebBook
- Octadecane, $\ce{ C18H38 }$; [593-45-3] NIST WebBook
Experimental Data
Upper critical solution temperatures (USCT) and critical solution compositions (x1c) of the systems acetonitrile (1) + alkane (2)
| $T$ (°C) | $T$ ($\pu{K}$) | $x_{1}$ |
|---|---|---|
| 68.0 | 341.2 | - |
| 77.0 | 350.2 | - |
| 84.8 | 358.0 | 0.63 |
| 91.9 | 365.1 | 0.67 |
| 101.0 | 374.2 | 0.70 |
| 108.5 | 381.7 | 0.75 |
| 113.0 | 386.2 | 0.77 |
| 125.0 | 398.2 | - |
| 130.5 | 403.7 | - |
| 147.0 | 420.2 | - |
| 153.0 | 426.2 | - |
