SDS Volume (3177)

Volume 67. Halogenated Ethanes and Ethenes with Water, p 532

Original Measurements

Lincoff, A. H.; Gossett, J. M.; in Gas Transfer at Water Surfaces by Brutsaert, W.; Jirka, G. H.; Eds.; D. Reidel Publ. Co.; Dordrecht, 1984, p. 17-25.

Variables:

Room Temp: 293 $\pu{K}$

Prepared by:

A.L. Horvath

Method/Apparatus/Procedure:

Henry's law constants were measured by EPICS and Batch Air Stripping Methods. The Equilibrium Partitioning in the Closed Systems technique compares the GC peak heights upon direct injection of headspace samples. In the Batch Air Stripping Method, equal volume samples were placed in serum bottles and the equilibrated headspaces contained concentrations proportional to original concentrations in the aqueous samples. Full equilibrium was achieved in a few hours.

Source and Purity of Materials:
  1. Source and purity not given.
  2. Distilled.
Estimated Errors:

Ambient temperature: ±0.1 K.
Mass concentration (m/v) (1): ±5% - 10%.

Components:
  1. 1,1,1-Trichloroethane, $\ce{ C2H3Cl3 }$; [71-55-6] NIST WebBook
  2. Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data

EPICS Method: loge H=10.21-4262/(T/K)
Batch air stripping method: loge H=9.975-4186/(T/K).

$T$ (°C) 100w1 $x_{1}$ $k_{\rm{D}}$ (m3 atm mol-1)
20 0.13131.775 x 10-40.0132
20 0.12931.748 x 10-40.0134

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