Compilation - Dichloromethane with Water (IUPAC SDS Volume 60)
SDS Volume (2470)
Volume 60. Halogenated Methanes with Water, p None
Original Measurements
Gossett, J. M.; Environ. Sci. Technol. 1987, 21, 202-8.
Variables:
Room Temp: 283 - 308 $\pu{K}$
Prepared by:
Method/Apparatus/Procedure:
A modification of the EPICS (Equilibrium Partitioning in Closed Systems) procedure was used for measuring Henry's law constants. A precise quantity of dichloromethane was injected into serum bottles which contained distilled water. The bottles were incubated for 18 - 24 hours at four desired temperatures in a reciprocating shaker bath. The headspace concentrations of the EPICS bottles were measured using a gas chromatograph which was equipped with a flame ionization detector. The mean of the coefficient of variation values was approximately 4.3 %.
Source and Purity of Materials:
- Burdick & Jackson reagent, pesticide grade. Distilled in a glass set-up before use.
- distilled.
Estimated Errors:
Ambient temperature: ±0.1 K.
Mass concentration (m/v) (1): See above.
Components:
- Dichloromethane, $\ce{ CH2Cl2 }$; [75-09-2] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
| $T$ (°C) | 100w1 | $x_{1}$ | $k_{\rm{D}}$ (m3 atm mol-1) |
|---|---|---|---|
| 9.6 | 2.2513 | 4.862 x 10-3 | 1.15 x 10-3 |
| 17.5 | 2.7492 | 5.960 x 10-3 | 1.31 x 10-3 |
| 24.8 | 2.1422 | 4.842 x 10-3 | 2.19 x 10-3 |
| 35.6 | 2.2150 | 4.782 x 10-3 | 3.26 x 10-3 |
