IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

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 Solubility System: Phenoxanthiin with Dibenzo(b,e)(1,4)dioxin

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Components:
   (1) Phenoxanthiin; C12H8OS; [262-20-4]  NIST Chemistry WebBook for detail
   (2) Dibenzo(b,e)(1,4)dioxin; C12H8O2; [262-12-4]  NIST Chemistry WebBook for detail

Original Measurements:
   Cullinane, N.M.; Rees, W.T., Trans. Faraday Soc. 1940, 36, 506-514.

Variables:
   Temperature = Temperature

Prepared By:
   W.E. Acree, Jr.

Experimental Data:   (Notes on the Nomenclature)
  

T/K	Mole Fraction x1	Mole Fraction x2
393.1	0.000	1.000
390.9	0.057	0.943
380.1	0.261	0.739
367.6	0.439	0.561
348.2	0.663	0.337
335.8	0.782	0.218
320.4	0.904	0.096
325.5	0.948	0.052
327.1	1.000	0.000

Method/Apparatus/Procedure:
   Mixtures were placed in small capillary tubes. Temperature was slowly varied with ample time given for equilibration. Transition temperatures determined by visual observations. Reported temperatures verified by repetitive measurements.

Source and Purity of Materials:
   (2) Synthesized by authors, and was purified by recrystallization from alcohol and sublimation.
   (2) Purity and chemical source not specified in paper, purified by sublimation and recrystallized from acetone.

Estimated Errors:

   Temperature: T/K: ± precision 0.2 (compiler). x₁: ± 0.002 (compiler).

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