IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: 1-Proponal with Nonane (n-nonane) and Water

   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) 1-Proponal (n-propanol, propyl alcohol, n-propyl alcohol); C3H8O; [71-23-8]  NIST Chemistry WebBook for detail
   (3) Nonane (n-nonane); C9H20; [111-84-2]  NIST Chemistry WebBook for detail

   A. Skrzecz, Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland (1996.04)

Critical Evaluation:

      A survey of reported compositions along the saturation curve (sat), and compositions of coexisting phases in equilibrium (eq.) for the system 1-propanol-octane-water is given in Table 53.

Saturation curve
   The system 1-propanol-nonane-water forms a miscibility gap of type 1. Only one binary pair of components, nonane-water, is partially miscible. The data for this system were compiled and critically evaluated in a previously published SDS volumes, Ref. 3. The recommended values of mutual solubility of the nonane-water system at 298 K are: x"2=2.4·10–8 and x'2=0.999 44. The solubility of water in nonane reported in Ref. 1 as 0.001 mass fraction (with the accuracy of ±0.001 of mass fraction equivalent to 0.007 mole fraction) is rejected. Data reported by Koshelkov et al.2 represent vapor-liquid-liquid equilibria at boiling temperatures 358.7-363.2 K (pressure 101.3 kPa). Temperatures were estimated from the authors'graph. Compositions of the nonane-rich phase in the region x1>0.18 seems to form a larger miscibility gap than at 298 K, which indicates an error in the experimental method of Ref. 2. Compositions at 298.2 K along the saturation curve obtained by titration method as well as compositions of phases in equilibrium are consistent in Ref. 1. These data are also consistent with the data of the 1-propanol-octane-water system reported by Vorobeva and Karapetyants in the same paper.1

Phases in equilibrium
   Compositions of coexisting phases in equilibrium for the ternary system 1-propanol-nonane-water were reported in both references. Composition of each phase was calculated from density-composition curve of saturated mixtures prepared at the time of saturation curve measurements. Compositions of phases in equilibrium reported in Ref. 2 were measured only at boiling temperatures and detailed information about experimental procedures are not reported. A plait point reported at 298.2 K is x1=0.486 and x2=0.318 mole fraction. All experimental data are treated as tentative. To present the system behavior, the data at 298.2 K of Vorobeva and Karapetyant,1 are presented in Fig. 27 .

Experimental Data:   (Notes on the Nomenclature)

TABLE 53. Summary of experimental data for the system 1-propanol-nonane-water
Vorobeva and Karapetyants, 1967298sat. (12), eq. (13)1
Koshelkov et al., 1974359-363eq. (10)2
View Figure 1 for this Evaluation

Table 53  Number of experimental points in parentheses.

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

   1  Vorobeva, A.I.; Karapetyants, M., Kh., Zh. Fiz. Khim. 41, 1144 (1967).
   2  Koshelkov, V.A.; Pavlenko, T.G.; Titova, V.N.; Timofeev, V.S.; Serafimov, L.A., Tr. Altai. Politekh. Inst. Im, I. I. Polzunova 41, 84 (1974).
   3  Shaw, D.G., ed., Solubility Data Series, Vol. 37, Hydrocarbons with Water and Seawater, Part I: Hydrocarbons C8 to C36 (Pergamon, New York, 1989).