IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Nitromethane with 1-Pentadecanol

   (1) 1-Pentadecanol; C15H32O; [629-76-5]  NIST Chemistry WebBook for detail
   (2) Nitromethane; CH3NO2; [75-52-5]  NIST Chemistry WebBook for detail

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

Critical Evaluation:

   Solubilities in the system comprising nitromethane and 1-pentadecanol have been reported in three publications. Schmid et al.1 determined the upper critical solution temperature by synthetic method. Zhuravleva, et al.2,3 studied the mutual solubility of (1) and (2) between 312 and 353 K using the synthetic method.

At the UCST, the only temperature where direct comparison is possible, the two studies are in rather poor agreement: [Schmid et al.1 (351.2 K) and Zhuraleva et al.2,3 (352.7 K).] However, it may be noted that the UCST values of Schmid et al.1 in well characterized systems are generally lower than other reports and thus the value from Zhuravleva, et al.2,3 is more realistic.

The results of experimental measurements2,3 have been verified by the calculated UCST = 352.8 K obtained from the relationship of UCST in the nitromethane - alcohol series and discussed at the beginning of this volume. Critical solution composition was reported in Zhuravleva, et al.2,3 as xc1 = 0.849, while the value calculated on the basis of relationship in the series was equal 0.854. These experimental values2,3 of UCST and critical solution composition are treated as recommended because they are consistent with the respective values calculated in the series. They have been used further for approximation of model parameters.

The experimental data reported in Zhuravleva, et al.2,3 measured in the same laboratory, have been approximated (with the same weighing factor) 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 = 0.65186, a2= 0.35769, b1 = 5.60922, and b2 = -6.02327

(mean standard error of estimate was 0.0428). 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 all experimental points2,3 are also presented in Fig. 33 . Monotectic equilibrium2,3 is reported to occur at 311.7 K.

Experimental Data:   (Notes on the Nomenclature)

Mutual solubility of nitromethane and 1-pentadecanol
T/K102 * Mass Fraction w1Mole Fraction x1Comment(s)
313.27.920.2435Alcohol-rich phase
313.297.940.9944Nitromethane-rich phase
318.29.470.2814Alcohol-rich phase
318.297.170.9923Nitromethane-rich phase
323.211.280.3224Alcohol-rich phase
323.296.410.9902Nitromethane-rich phase
328.213.430.3673Alcohol-rich phase
328.295.610.9879Nitromethane-rich phase
333.216.060.4173Alcohol-rich phase
333.294.650.9851Nitromethane-rich phase
338.219.430.4743Alcohol-rich phase
338.293.350.9813Nitromethane-rich phase
343.224.050.5423Alcohol-rich phase
343.291.250.9750Nitromethane-rich phase
348.231.420.6316Alcohol-rich phase
348.286.890.9612Nitromethane-rich phase
350.236.360.6813Alcohol-rich phase
350.283.260.9490Nitromethane-rich phase
351.240.030.7141Alcohol-rich phase
351.280.220.9382Nitromethane-rich phase
352.246.180.7625Alcohol-rich phase
352.274.520.9163Nitromethane-rich phase
View Figure 33 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  Zhuravleva, I.K.; Zhuravlev, E.F.; Faizulova, P.P., Zh. Obshch. Khim. 45, 1929-33 (1975).
   3  Zhuravleva, I.K.; Zhuravlev, E.F.; Mukhametshina, V.B.; Khisametdinova, Z.Z., Zh. Fiz. Khim. 51, 1003 (1977); *Deposited Doc., VINITI 4286 (1976).