IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Ethanol with Toluene and Water

Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Ethanol (ethyl alcohol); C2H6O; [64-17-5]  NIST Chemistry WebBook for detail
   (3) Toluene (methylbenzene); C7H8; [108-88-3]  NIST Chemistry WebBook for detail

Original Measurements:
   Bonner, W.D., J. Phys. Chem. 14, 738 (1909-1910).

Variables:
   Temperature = 273 K

Prepared By:
   A. Skrzecz

Experimental Data:   (Notes on the Nomenclature)

Compositions along the saturation curve
T/K	Mass Fraction w₁ (compiler)	Mass Fraction w₂ (compiler)	Mole Fraction x₁ (compiler)	Mole Fraction x₂ (compiler)
273.2	0.2795	0.6830	0.3900	0.4764
273.2	0.3498	0.5962	0.4451	0.3793
273.2	0.4135	0.5155	0.4849	0.3023
273.2	0.5695	0.2794	0.5198	0.1275
273.2	0.6080	0.1842	0.4937	0.0748
273.2	0.5990	0.0966	0.4202	0.0339
273.2	0.5798	0.0685	0.3831	0.0226
273.2	0.5345	0.0326	0.3224	0.0098
273.2	0.4496	0.0154	0.2463	0.0042

Method/Apparatus/Procedure:
   In a tube 1 cm diameter and 12 cm long known amount, by weight, of hydrocarbon and water were placed into a temperature controlled bath. The contents of the tube were stirred and alcohol was added gradually until a homogeneous solution was obtained. Observations were made visually through the telescope of a cathetometer. The samples were always weighed immediately before and after each experiment. Concentrations were reported as weight of water in 1 g of binary water-hydrocarbon mixture and the weight of alcohol necessary to make a homogenous solution. The mass of binary water-hydrocarbon mixture was about 1 g; the mass of alcohol-up to 5 g.

Source and Purity of Materials:
   (1) Kahlbaum; presumably dried and distilled.
   (2) Kahlbaum; presumably dried and distilled.
   (3) Source not specified.

Estimated Errors:
   Solubility: Not reported.
   Temperature: Accuracy of weighing 0.0001 g.