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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Phenoxazine with Phenothiazine
Components:
(1) Phenothiazine; C12H9NS; [92-84-2]
NIST Chemistry WebBook
for detail
(2) Phenoxazine; C12H8NO; [135-67-1]
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)
Initial Temperature (T
In
)
Final Temperature (T
Fin
)
Mole Fraction x
1
Mole Fraction x
2
457.6
456.8
0.000
1.000
452.0
421.5
0.118
0.882
449.5
416.9
0.176
0.824
438.1
413.0
0.360
0.640
430.1
413.6
0.483
0.517
415.8
413.1
0.689
0.311
415.2
412.9
0.735
0.265
416.7
413.2
0.744
0.256
424.3
413.0
0.871
0.129
427.3
415.3
0.941
0.059
429.9
429.2
1.000
0.000
Notes:
a
Phase diagram, given in the original paper, shows formation of a partial series of solid solutions having compositions from circa x
1
= 0.00 to x
1
= 0.22 and from x
1
= 0.93 to x
1
= 1.00. T
in
refers to the temperature at which crystallization begins; T
fin
is the temperature at which crystallization of the solid solution concludes.
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:
(1) Synthesized by authors, and was purified by sublimation and recrystallized from alcohol.
(2) Purity and chemical source were not specified in paper, was sublimed and recrystallized from alcohol.
Estimated Errors:
Temperature: T/K: ± precision 0.2. (compiler). x
1
: ± 0.002 (compiler).