IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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 Solubility System: Acetonitrile with 1-Octadecanol

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Components:
   (1) 1-Octadecanol; C18H38O; [112-92-5]  NIST Chemistry WebBook for detail
   (2) Acetonitrile; C2H3N; [75-05-8]  NIST Chemistry WebBook for detail

Original Measurements:
   Hoerr, C.W.; Harwood, H.J.; Ralston, A.W., J. Org. Chem. 9, 267 (1944).

Variables:
   Temperature = 303 K to 336 K

Prepared By:
   Valerii P. Sazonov and Nikolai V. Sazonov

Experimental Remarks:

   The solubilities of acetonitrile (1) and 1-octadecanol (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 52.5 °C (325.7 K, compiler). The upper critical solution temperature was extracted from the reported graphs by the compiler and found to be 63.6 °C (336.8 K).

Experimental Data:   (Notes on the Nomenclature)
  

Mutual solubility of acetonitrile (1) and 1-octadecanol (2)

t/°C	T/K	102 * Mass Fraction w1	g2/100 g solution	Mole Fraction x1 (compiler)	Comment(s)
30.0	303.2	-	0.3	-	Alcohol-rich phase
36.4 (c)	309.6	-	-	-	Alcohol-rich phase
40.0	313.2	-	1.6	-	Alcohol-rich phase
42.0 (c)	315.2	-	-	-	Alcohol-rich phase
48.2 (c)	321.4	-	-	-	Alcohol-rich phase
50.0	323.2	-	7.6	-	Alcohol-rich phase
51.8 (c)	325.0	-	-	-	Alcohol-rich phase
52.9 (c)	326.1	15.0 (a)	-	0.538	Alcohol-rich phase
54.0 (c)	327.2	9.3 (a)	-	0.403	Alcohol-rich phase
54.4 (c)	327.6	-	-	-	Alcohol-rich phase
55.5 (c)	328.7	4.8 (a)	-	0.249	Alcohol-rich phase
55.6 (c)	328.8	22.3 (b)	-	0.654	Alcohol-rich phase
60.8 (c)	334.0	31.2 (b)	-	0.749	Alcohol-rich phase
62.5 (c)	335.7	-	-	-	Alcohol-rich phase
63.2 (c)	336.4	46.4 (b)	-	0.851	Alcohol-rich phase
30.0	303.2	99.7 (a)	0.3	0.999	Acetonitrile-rich phase
36.4 (c)	309.6	99.1 (a)	-	0.999	Acetonitrile-rich phase
40.0	313.2	98.4 (a)	1.6	0.998	Acetonitrile-rich phase
42.0 (c)	315.2	98.2 (a)	-	0.997	Acetonitrile-rich phase
48.2 (c)	321.4	95.3 (a)	-	0.993	Acetonitrile-rich phase
50.0	323.2	92.9 (a)	7.6	0.989	Acetonitrile-rich phase
51.8 (c)	325.0	90.0 (b)	-	0.983	Acetonitrile-rich phase
52.9 (c)	326.1	-	-	-	Acetonitrile-rich phase
54.0 (c)	327.2	-	-	-	Acetonitrile-rich phase
54.4 (c)	327.6	86.2 (b)	-	0.976	Acetonitrile-rich phase
55.5 (c)	328.7	-	-	-	Acetonitrile-rich phase
55.6 (c)	328.8	-	-	-	Acetonitrile-rich phase
60.8 (c)	334.0	-	-	-	Acetonitrile-rich phase
62.5 (c)	335.7	68.2 (b)	-	0.934	Acetonitrile-rich phase
63.2 (c)	336.4	-	-	-	Acetonitrile-rich phase

Notes:
   ^a  Solid-liquid equilibrium.
   ^b   Liquid-liquid equilibrium.
   ^c  These data were extracted by the compiler from the published graphs.

Method/Apparatus/Procedure:
   The solubility measurements were made with the equipment and in the manner described elsewhere.^1,2

Source and Purity of Materials:
   (1) Source not specified; purity not specified.
   (2) Prepared by catalytic hydrogenation of ethyl stearate; purified by vacuum distillation; freezing point = 57.98 °C.

Estimated Errors:
   Solubility: Not specified.
   Temperature: Not specified.

References:
   1. C. W. Hoerr, E. F. Binkerd, W. O. Pool, and A. W. Ralston, J. Org. Chem. 9, 68 (1944).
   2. A. W. Ralston, C. W. Hoerr, W. O. Pool, and H. J. Harwood, J. Org. Chem. 9,102 (1944).

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Last updated: February 18, 2015 (Created: August 17, 2007)