IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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 Solubility System: Thioxanthene with Thiophene

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Components:
   (1) Thiophene; C4H4S; [110-02-1]  NIST Chemistry WebBook for detail
   (2) Thioxanthene; C13H10S; [261-31-4]  NIST Chemistry WebBook for detail

Original Measurements:
   Coon, J.E.; Sediawan, W.B.; Auwaerter, J.E.; McLaughlin, E., J. Solution Chem. 1988, 16, 519-534.

Variables:
   Temperature = Temperature

Prepared By:
   W.E. Acree, Jr.

Experimental Data:   (Notes on the Nomenclature)
  

T/K	Mole Fraction x1	Mole Fraction x2
309.2	0.0927	0.9073
317.4	0.1171	0.8829
325.3	0.1433	0.8567
332.1	0.1792	0.8208
338.4	0.2140	0.7860
342.3	0.2407	0.7593

Method/Apparatus/Procedure:
   Constant temperature bath and a precision thermometer.
Mixtures of known concentrations sealed in glass ampoules and placed in constant temperature to equilibrate. Samples were rotated while bath temperature slowly increased. Solubility determined by visual noting the same temperature at which the last trace of solid solute disappeared.

Source and Purity of Materials:
   (1) 99+ %, gift from Dr. E. J. Eisenbraun, Oklahoma State University, USA, was recrystallized from toluene.
   (2) Gold Label, 99.9+ %, Aldrich Chemical Company, was used as received.

Estimated Errors:

   Temperature: T/K: ± precision 0.1. x₁: ± 0.0003.

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Last updated: February 18, 2015 (Created: August 17, 2007)