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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Dichloromethane with Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) Dichloromethane; CH2Cl2; [75-09-2]
NIST Chemistry WebBook
for detail
Original Measurements:
Gossett, J.M., Environ. Sci. Technol. 1987, 21, 202-8.
Variables:
Temperature = 283 K - 308 K
Prepared By:
A. L. Horvath
Experimental Data:
(Notes on the Nomenclature)
t/°C
Henry's law constant [m**3 atm mol**-1]
CV
10
2
* Mass Fraction w
1
(compiler)
10
3
* Mole Fraction x
1
(compiler)
9.6
1.15 x 10
-3
19.2
2.2513
4.862
17.5
1.31 x 10
-3
19.9
2.7492
5.960
24.8
2.19 x 10
-3
17.4
2.1422
4.842
35.6
3.26 x 10
-3
2.37
2.2150
4.782
Notes:
1
CV = coefficient of variation (= 100 S.D./mean).
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:
(1) Burdick & Jackson reagent, pesticide grade. Distilled in a glass set-up before use.
(2) Distilled.
Estimated Errors:
Solubility: See above.
Temperature: ± 0.1 K.