IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Naphthalene with 1,2-Benzenediol

Components:
   (1) 1,2-Benzenediol; C6H6O2; [120-80-9]  NIST Chemistry WebBook for detail
   (2) Naphthalene; C10H8; [91-20-3]  NIST Chemistry WebBook for detail

Original Measurements:
   Kremann, R.; Janetzky, E., Monatsch. Chem. 1911, 32, 1055-1062.

Variables:
   Temperature = Temperature

Prepared By:
   W.E. Acree, Jr.

Experimental Data:   (Notes on the Nomenclature)


T/K	Mole Fraction x₁	Mole Fraction x₂
377.2	0.000	1.000
370.7	0.092	0.908
368.7	0.157	0.843
364.7	0.244	0.756
361.2	0.311	0.689
358.2	0.408	0.592
357.7	0.448	0.552
356.7	0.497	0.503
356.2	0.533	0.467
356.2	0.578	0.422
355.2	0.601	0.399
354.7	0.639	0.361
353.2	0.667	0.333
349.2	0.740	0.260
346.2	0.805	0.195
351.2	0.951	0.049
353.2	1.000	0.000

Notes:
     Compiler: A 1:1 molecular compound is probably formed, in which case the second eutectic point occurs at about x₁ = 0.815 and T/K = 345.6.

Method/Apparatus/Procedure:
   Binary mixtures prepared by weight. While the experimental details were not given in the paper, compiler speculates (based upon quantity of material used) that the sample was sealed in a glass container, temperature slowly varied, and the phase diagram determined by visually noting the temperature at which the last/first crystal of solid disappeared/appeared.

Source and Purity of Materials:
   (1) Purity and chemical source were not specified in paper.
   (2) Purity and chemical source were not specified in paper.

Estimated Errors:

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