IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Naphthalene with n-Hexane
Components:
   (1) n-Hexane; C6H14; [110-54-3]  NIST Chemistry WebBook for detail
   (2) Naphthalene; C10H8; [91-20-3]  NIST Chemistry WebBook for detail
Evaluator:
   W.E. Acree, Jr. Department of Chemistry University of North Texas Denton, Texas 76203-5068 (USA) August, 1994

 Critical Evaluation:
   Naphthalene solubilities in n-hexane were retrieved from papers by Domanska (1), Ward (2), Acree et al. (3), Heric and Posey (4), and Chang (5). The first two studies report values at several temperatures, Acree et al. determined values at 303, 308 and 313 K, and both Heric and Posey and Chang measured only the mole fraction solubility at 298 K. There is no prior reason to exclude any of the five studies from the critical evaluation.
Regressional analysis of the experimental data as Ln x1 versus 1/T yielded the following mathematical relationship: Ln x1 = - 3849.6 (1/T) + 10.789 (r=0.9964) for variation of naphthalene solubility with absolute temperature (see graph below).

 Experimental Data:   (Notes on the Nomenclature)

 References: (Click a link to see its experimental data associated with the reference)
   1  Domanska, U. Polish J. Chem. 1981, 55, 1715-1720. (numerical values obtained through personal correspondence with author).
   2  Ward, H.L., J. Phys. Chem. 1926, 30, 1316-1333.
   3  Acree, W.E., Jr.; Pontikos, N.M.; Judy, C.L., Int. J. Pharm. 1986, 31, 225-230.
   4  Heric, E.L.; Posey, C.D., J. Chem. Eng. Data 1964, 9, 35-43.
   5  Chang, W., Ph.D Dissertation, North Dakota State University, North Dakota, USA (1969).