IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Nitromethane with 1-Nonanol

Components:
   (1) Nitromethane; CH3NO2; [75-52-5]  NIST Chemistry WebBook for detail
   (2) 1-Nonanol; C9H20O; [143-08-8]  NIST Chemistry WebBook for detail

Evaluator:
   V. P. Sazonov, Technical University, Samara, Russia; G. T. Hefter, Murdoch University, Perth, Australia; A. Skrzecz, Institute of Physical Chemistry Polish Academy of Sciences, Warsaw, Poland, July, 1999.

Critical Evaluation:

   Solubilities in the system comprising nitromethane and 1-nonanol have been reported in three publications. Schmid et al.¹ determined the upper critical solution temperature by the synthetic method. Both Sazonov and Chernysheva,² between 295 and 328 K, and Zhuravleva and Zhukova,³ between 298 and 328 K, measured the mutual solubilities of (1) and (2) using the synthetic method.

The upper critical solution temperature has been reported as 325 K,¹ 327.7 K,³ and 327.96 K.² The UCST of Schmid et al.¹ is, as in many systems investigated by these authors, considerably lower than other reported values and is therefore rejected. The remaining data^2,3 are in reasonable agreement and thus their average value: T_c = (327.8 ± 0.2) K is recommended. The corresponding critical solution composition has been reported in as x_c1 = 0.743 (Sazonov and Chernysheva²) and x_c1 = 0.727.³

All experimental values reported in Sazonov and Chernysheva² and Zhuravleva and Zhukova³ (treated with the same weighing factor) have been approximated by the equation based on scaling law (described in the Introduction material to this volume "Relations of Solubility Data in Binary Systems Containing Nitromethane") and the following parameters have been adjusted:

a₁ = 0.86865, a₂= -0.05641, b₁ = 8.21078, b₂ = -7.57006

(mean standard error of estimate was 0.0244).

For an approximation x_c1 and UCST from Sazonov and Chernysheva² have been used. In the opinion of the evaluators, the mutual solubilities calculated by this equation may be treated as tentative. The results of calculations for the selected temperatures are presented in the following table. This relationship together with experimental points reported in Sazonov and Chernysheva² and Zhuravleva and Zhukova³ are also presented in Fig. 28 .

Experimental Data: (Notes on the Nomenclature)

TABLE 1: Mutual solubility of nitromethane and 1-nonanol
T/K	10² * Mass Fraction w₁	Mole Fraction x₁	Comment(s)
293.2	8.49	0.1799	1-Nonanol-rich phase
293.2	98.26	0.9926	Nitromethane-rich phase
298.2	9.94	0.2069	1-Nonanol-rich phase
298.2	95.47	0.9803	Nitromethane-rich phase
303.2	11.72	0.2389	1-Nonanol-rich phase
303.2	92.79	0.9682	Nitromethane-rich phase
308.2	13.96	0.2772	1-Nonanol-rich phase
308.2	90.12	0.9557	Nitromethane-rich phase
313.2	16.89	0.3245	1-Nonanol-rich phase
313.2	87.34	0.9422	Nitromethane-rich phase
318.2	20.98	0.3855	1-Nonanol-rich phase
318.2	84.11	0.9260	Nitromethane-rich phase
323.2	27.53	0.4730	1-Nonanol-rich phase
323.2	79.44	0.9013	Nitromethane-rich phase
324.2	29.48	0.4969	1-Nonanol-rich phase
324.2	78.03	0.8936	Nitromethane-rich phase
325.2	31.87	0.5250	1-Nonanol-rich phase
325.2	76.27	0.8837	Nitromethane-rich phase
326.2	35.01	0.5600	1-Nonanol-rich phase
326.2	73.85	0.8697	Nitromethane-rich phase
326.7	37.09	0.5821	1-Nonanol-rich phase
326.7	72.17	0.8597	Nitromethane-rich phase
327.2	39.85	0.6102	1-Nonanol-rich phase
327.2	69.84	0.8455	Nitromethane-rich phase
327.7	44.39	0.6536	1-Nonanol-rich phase
327.7	65.71	0.8191	Nitromethane-rich phase

View Figure 28 for this Evaluation

References: (Click a link to see its experimental data associated with the reference)

   1  H.H.O. Schmid; Mangold, H.K.; Lundberg, W.O., Microchem. J. 9, 134-44 (1965).
   2  Sazonov, V.P.; Chernysheva, M.F., Zh. Obshch. Khim. 46, 997-1000 (1976).
   3  Zhuravleva, I.K.; Zhukova, L.M., Zh. Obshch. Khim. 47, 1942-5 (1977).