IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Naphthalene with 1,3-Dimethylbenzene

Components:
   (1) 1,3-Dimethylbenzene; C8H10; [108-38-3]  NIST Chemistry WebBook for detail
   (2) Naphthalene; C10H8; [91-20-3]  NIST Chemistry WebBook for detail

Original Measurements:
   Kravchenko, V.M., Zhur. Fiz. Khim. 1939, 13, 989-1000.

Variables:
   Temperature = Temperature

Prepared By:
   W.E. Acree, Jr.

Experimental Data:   (Notes on the Nomenclature)


T/K	Mole Fraction x₁	Mole Fraction x₂	Comment(s)
224.7	0.025	0.975	Solid Phase (2)
224.2	0.036	0.964	Eutectic
231.0	0.042	0.958	Solid Phase (1)
239.7	0.059	0.941	Solid Phase (1)
252.7	0.084	0.916	Solid Phase (1)
265.0	0.124	0.876	Solid Phase (1)
277.2	0.172	0.828	Solid Phase (1)
285.7	0.215	0.785	Solid Phase (1)
292.8	0.262	0.738	Solid Phase (1)
298.2	0.305	0.695	Solid Phase (1)
305.2	0.352	0.648	Solid Phase (1)
310.9	0.405	0.595	Solid Phase (1)
315.2	0.451	0.549	Solid Phase (1)
324.7	0.553	0.447	Solid Phase (1)
331.2	0.646	0.354	Solid Phase (1)
339.2	0.769	0.231	Solid Phase (1)
346.0	0.883	0.117	Solid Phase (1)

Notes:
     Author reports eutectic point occurs at about x₁ = 0.036 and T/K = 224.2.

Method/Apparatus/Procedure:
   Phase diagram was determined using a thermal analysis method (described in detail in V.M. Kravchenko, J. Phys. Chem. U.S.S.R. 1939, 13, 133), supplemented by visual observations.

Source and Purity of Materials:
   (1) Purity and chemical source were not specified in paper, was recrystallized before use.
   (2) Purity and chemical source were not specified in paper, was distilled before use.

Estimated Errors:

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