IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: 1,4-Difluorobenzene with Water
Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) 1,4-Difluorobenzene; C6H4F2; [540-36-3]  NIST Chemistry WebBook for detail
Original Measurements:
   Yalkowsky, S.H.; Orr, R.J.; Valvani, S.C., Ind. Eng. Chem. Fundam. 1979, 18(4), 351-3.

 Variables:
   Temperature = One temperature

 Prepared By:
   A. L. Horvath

 Experimental Data:   (Notes on the Nomenclature)
  
t/°Cg1/V2 [g dm**-3]102 * Concentration c1 [mol dm**-3]Concent. c1 Note104 * Mole Fraction x1x1 Note
251.2211.07b1.935c
 Notes:
   a  Calculated by F. W. Getzen.
   b  Reported.
   c  Calculated by compiler.

 Method/Apparatus/Procedure:
   A small excess of 1,4-difluorobenzene in water was agitated at room temperature for a period of about 24 hours and then filtered. The filtrate was diluted and assayed spectrophotometrically. The determination was done in duplicate.

 Source and Purity of Materials:
   (1) Aldrich commercial grade, used as received.
   (2) Deionized.

 Estimated Errors:
   Solubility: ±10%.
   Temperature: ± 1 K.