IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: 1,3-Dibromobenzene with Water

   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) 1,3-Dibromobenzene; C6H4Br2; [108-36-1]  NIST Chemistry WebBook for detail

   A. L. Horvath, Imperial Chemical Industries Limited, Runcorn, England. May 1979.

Critical Evaluation:

        The solubility of 1,3-dibromobenzene in water was reported by Hine et al. (1) at 308.15 K and by Yalkowsky et al. (2) at 298.15 K. Considering the small temperature difference of 10 degrees between the two measurements, one can judge that the data show a significant discrepancy.

     The reported experimental errors ± 5.6% (1) and ± 10% (2) are probably greater than the authors anticipated. A creful study of the experimental procedures described in both articles reveals no obvious shortcomings. Despite the long time allowed for equilibrium by Hine et al., their measurements resulted in a lower solubility value than that obtained by Yalkowsky et al. The most likely explanation for the discrepancy could be attributed to the analytical determinations used.

     It is well known that the solubility curve for halogenated benzenes in water has a positive slope above room temperature. However, the two measured points reported are against this trend, that is, the values decrease with rising temperature. In order to choose between the two solubility data values, use was made of the theoretical relationship between the molar solubilities and the molar volumes of the solutes at 298.15 K as described in the Introduction. The following solubility value for 1,3-dibromobenzene in water is tentative:

Experimental Data:   (Notes on the Nomenclature)

T/K104 * Concentration c1 [mol dm**-3]102 * g1/kg106 * Mole Fraction x1
References: (Click a link to see its experimental data associated with the reference)

   1  Hine, J.; Haworth, H.W.; Ramsay, O.B., J. Am. Chem. Soc. 1963, 85(10), 1473-6.
   2  Yalkowsky, S.H.; Orr, R.J.; Valvani, S.C., Ind. Eng. Chem. Fundam. 1979, 18(4), 351-3.