IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Naphthalene with 1-Butanol

Components:
   (1) 1-Butanol; C4H10O; [71-36-3]  NIST Chemistry WebBook for detail
   (2) Naphthalene; C10H8; [91-20-3]  NIST Chemistry WebBook for detail

Original Measurements:
   Domanska, U. Polish J. Chem. 1981, 55, 1715-1720. (numerical values obtained through personal correspondence with author).

Variables:
   Temperature = Temperature

Prepared By:
   W.E. Acree, Jr.

Experimental Data:   (Notes on the Nomenclature)


T/K	Mole Fraction x₁	Mole Fraction x₂
284.05	0.038	0.962
289.05	0.045	0.955
291.95	0.050	0.950
295.35	0.058	0.942
298.25	0.066	0.934
303.25	0.077	0.923
307.95	0.091	0.909
313.45	0.113	0.887
317.35	0.140	0.860
319.75	0.156	0.844
323.55	0.176	0.824
330.45	0.228	0.772

Method/Apparatus/Procedure:
   Constant temperature bath and a precision thermometer.
Solubilities were measured using a dynamic method. Mixtures of known concentrations were sealed in thick-walled glass ampoules and placed in a constant temperature to equilibrate. Bath temperature was slowly increased by 2 K per hour. Solubility determined by visually noting the temperature at which the last trace of solid solute disappeared.

Source and Purity of Materials:
   (1) Purity not specified, P.O.Ch., Gliwice, Poland, was vacuum sublimed to a melting temperature of 80.25 ºC.
   (2) Initial purity not specified, P.O.Ch., was dried over sodium carbonate and fractionally distilled to a final purity of 99.9+ %.

Estimated Errors:

   Temperature: T/K: precision ± 0.1. x₁: to 3 significant figs. (compiler).