IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Trichloromethane (chloroform) with Water
Components:
   (1) Seawater; ; []  NIST Chemistry WebBook for detail
   (2) Trichloromethane (chloroform); CHCl3; [67-66-3]  NIST Chemistry WebBook for detail
Original Measurements:
   Hunter-Smith, R.J.; Balls, P.W.; Liss, P.S., Tellus 35B, 170 (1983).

 Variables:
   Temperature = 283 K - 298 K

 Prepared By:
   A. L. Horvath

 Experimental Remarks:
   The Henry's law constants (dimensionless) were derived from the best-fit lines of van't Hoff plots:
loge H=-3649/T(K) + 10.63


 Experimental Data:   (Notes on the Nomenclature)
  
t/°CHenry's law constant [(dimensionless)]102 * Mass Fraction w1 (compiler) 104 * Mole Fraction x1 (compiler)
100.10460.65009.864
150.13090.64709.818
200.16240.64289.753
250.20010.63779.675
 Method/Apparatus/Procedure:
   The multiple equilibrium technique was used to measure the Henry's law constant as described elsewhere (ref. 1). A known volume of seawater in a syringe was shaken with a known volume of trichloromethane. After equilibration, the headspace was separated and analyzed for  trichloromethane. A gas chromatograph fitted with an electron capture detector was used for the analysis.

 Source and Purity of Materials:
   (1) Source and purity not given.
   (2) Samples from 48o N to 65o S in the Atlantic in late 1981.

 Estimated Errors:
   Solubility: ± 5.5 % std. dev.
   Temperature: ± 0.2 K.

 References:
   1 McAuliffe, C. D. Chem. Techn. 1971, 1, 46.