IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Biphenyl with n-Heptane

Components:
   (1) n-Heptane; C7H16; [142-82-5]  NIST Chemistry WebBook for detail
   (2) Biphenyl; C12H10; [92-52-4]  NIST Chemistry WebBook for detail

Evaluator:
   W.E. Acree, Jr. Department of Chemistry University of North Texas Denton, Texas 76203-5068 (USA) June, 1994.

Critical Evaluation:

   Biphenyl solubilities in n-heptane were retrieved from papers by Warner et al. (1), Acree et al. (2), Acree (3), Chang (4), and Lissi and Abuin (5). The first study reportes observed values at several temperatures, Acree et al. determined values at 303, 308 and 313 K, and the latter three studies give the mole fraction solubility at either 298 K or 293 K. The value of Lissi was excluded from the critical evaluation since the n-heptane solvent was saturated with water, rather than a dried solvent.
Regressional analysis of the experimental data as Ln x₁ versus 1/T yielded the following mathematical relationship:
Ln x₁ = - 5153.7 (1/T) + 15.229 (r = 0.9982)
for variation of biphenyl solubility with absolute temperature (see graph below). Back-calculated solubility at 298 K is x₁ = 0.1279, and differs by about 8 - 10 % from experimental values of x₁ = 0.1381 (3) and x₁ = 0.138 (4).

Experimental Data:   (Notes on the Nomenclature)

View Figure 1 for this Evaluation

References: (Click a link to see its experimental data associated with the reference)

   1  Warner, J.C.; Scheib, R.C.; Svirbely, W.J., J. Chem. Phys. 1934, 2, 590-594.
   2  Acree, W.E., Jr.; Pontikos, N.M.; Judy, C.L., Int. J. Pharm. 1986, 31, 225-230.
   3  Acree, W.E., Jr., Int. J. Pharm. 1984, 18, 47-52.
   4  Chang, W., Ph.D Dissertation, North Dakota State University, North Dakota, USA (1969).
   5  Lissi, E.A.; Abuin, E.B., Bol. Soc. Chil. Quim. 1981, 26, 19-34.