IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Dodecane with Water

Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Dodecane; C12H26; [112-40-3]  NIST Chemistry WebBook for detail

Evaluator:
   G.T. Hefter, School of Mathematical and Physical Sciences, Murdoch University, Perth, W.A., Australia. April 1986.

Critical Evaluation:

   Quantitative solubility data for the system dodecane (1) – water (2) have been reported in the publications listed in Table 1.

The original data in all of these publications are compiled in the Data Sheets immediately following this Critical Evaluation. For convenience further discussion of this system will be divided into two parts.

1. SOLUBILITY OF DODECANE (1) IN WATER (2)

The solubility of dodecane in water has been reported in only two publications, both at 298K (Table 1). The agreement between the two studies is very poor with Franks value (ref 2) considerably higher than that reported by Sutton and Calder (ref 3). Support for the lower value comes from extrapolation of the lower n-alkane solubilities. However, there is sufficient uncertainty in this extrapolation to preclude rejection of the sufficient uncertainty in this extrapolation to preclude rejection of the higher value at this time. The available data are summarized in Table 2.

2. SOLUBILITY OF WATER (2) IN DODECANE (1)

As only the data of Schatzberg (ref 1) are available no Critical Evaluation is possible. However, it may be noted that the values of Schatzberg in well characterized systems are generally reliable. The interested user is referred to the relevant Data Sheet for the experimental values.

Experimental Data:   (Notes on the Nomenclature)

Table 1. Quantitative Solubility Studies of the Dodecane (1) - Water (2) System
Author	T/K	Reference	Solubility	Method
Schatzberg	298, 313	1	(2) in (1)	Karl Fischer
Franks	298	2	(1) in (2)	GLC
Sutton and Calder	298	3	(1) in (2)	GLC

Table 2. Tentative Solubility Values of the Dodecane (1) in Water (2)
T/K	Reference	Sol. Power	Solubility	Best Sol. Power	Best Solubility	Best Sol. Note	x₁ Power	x₁	x₁ Note
298	2, 3	7	8.42, 3.7 g(1)/100g sln	7	3.7 g(1)/100g sln	a	10	3.9	a

Notes:
Table 2^a  Datum from ref 3 preferred as Tentative value; see text.

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

   1  Schatzberg, P., J. Phys. Chem. 1963, 67, 776-9.
   2  Franks, F., Nature (London) 1966, 210, 87-8.
   3  Sutton, C.; Calder, J.A., Environ. Sci. Technol. 1974, 8, 654-7.