IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Biphenyl with Diphenylamine

Components:
   (1) Diphenylamine; C12H11N; [122-39-4]  NIST Chemistry WebBook for detail
   (2) Biphenyl; C12H10; [92-52-4]  NIST Chemistry WebBook for detail

Original Measurements:
   Lee, H.H.; Warner, J.C., J. Am. Chem. Soc. 1933, 55, 209-214.

Variables:
   Temperature = Temperature

Prepared By:
   W. E. Acree, Jr.

Experimental Data:   (Notes on the Nomenclature)


T/K	Mole Fraction x₁	Mole Fraction x₂
326.0	0.000	1.000
317.7	0.180	0.820
309.2	0.305	0.695
306.8	0.354	0.646
303.5	0.397	0.603
302.8	0.417	0.587
304.0	0.435	0.565
307.3	0.467	0.533
308.2	0.478	0.422
312.2	0.523	0.477
316.9	0.575	0.425
321.8	0.646	0.354
326.9	0.732	0.268
334.1	0.845	0.155
342.2	1.000	0.000

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 noting the temperature at which the last trace of solid solute disappeared.

Source and Purity of Materials:
   (1) Highest Purity, Eastman Chemicals, was recrystallized from alcohol.
   (2) Highest Purity, Eastman Chemicals, was distilled under reduced pressure.

Estimated Errors:
   Solubility: x₁: ± 0.001.
   Temperature: T/K: precision ± 0.1.

References:
   ¹W.E. Acree, Jr.