SDS Volume

Volume 78. Acetonitrile Binary Systems, p 1006

Source Publication

Szydlowski, J.; Szykula, M.; Fluid Phase Equilib. 154, 79 (1999).

Conditions:

Room Temp: 256 - 273 $\pu{K}$

Compiler:

V.P. Sazonov

Methodology:

The synthetic method was used with a simplified version of the apparatus described in work [1]. Temperature was changed at the rate < 0.01 K/min; there was no visible influence of the rate on the transition temperature up to the rate 0.1 K/min. Due to the very weak turbidity a long capillary cell was employed. A 5-mW Polythec HeNe laser was used as a probe for detecting the phase separation.

Sample Information:
  1. Sigma; 99.5% D; carefully dried over 5 Å molecular sieves; not purified.
  2. Millipore Mili-Q; quality.
Measurement Errors:

Ambient temperature: ±5 mK

Methodology Citation

1 Szydlowski, J.; Rebelo, L. P.; Van Hook, W. A.; Rev. Sci. Instrum. 63, 1717 (1992).

System Components:
  1. Acetonitrile-d3, $\ce{ C2D3N }$; [2206-26-0] NIST WebBook
  2. Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data

UCST was reported at 272.961 ± 0.005 K at x1c = 0.365 ± 0.002 (100 w1 = 58.4, compiler).

$T$ (°C) $T$ ($\pu{K}$) $x_{1}$ w1
-16.861256.289 - -
-12.653260.497 - -
-8.217264.933 0.174 34.0
-7.653265.497 - -
-5.062268.088 - -
-4.660268.490 0.203 38.4
-2.825270.325 - -
-1.475271.675 - -
-1.428271.722 0.253 45.3
-0.552272.598 - -
-0.410272.740 0.300 51.2
-0.189272.961 0.362 58.1
-16.861256.289 0.742 87.5
-12.653260.497 0.701 85.1
-8.217264.933 - -
-7.653265.497 0.642 81.4
-5.062268.088 0.600 78.6
-4.660268.490 - -
-2.825270.325 0.550 74.9
-1.475271.675 0.500 71.0
-1.428271.722 - -
-0.552272.598 0.451 66.8
-0.410272.740 - -
-0.189272.961 - -

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