SDS Volume (1029)

Volume 38. Hydrocarbons in Water and Seawater, Part II, p None

Original Measurements

Davis, W. W.; Krahl, M. E.; Cloves, G. H. A.; J. Am. Chem. Soc. 1942, 64, 108-10.

Variables:

Room Temp: 27 °C

Prepared by:

M.C. Haulait-Pirson

Method/Apparatus/Procedure:

The method consisted of preparing serial dilutions of a suspension of [1] in [2] and determining nephelometrically the amount of [1] per unit volume beyond which further dilution caused no reduction in light scattering, which remained equal to that of pure [2]. A Bausch and Lomb Dubosque colorimeter model 100-mm was employed. Many details are reported in [1].

Source and Purity of Materials:
  1. Hoffman La-Roche; used as received; MP = 175.3-177.1°C (cf. [2]).
  2. Dust-free.
Estimated Errors:

Ambient temperature: ±3°C
Mass concentration (m/v) (1): ±0.3 × 10-6 g(1) dm-3(2)

References

1 Davis, W. W.; Parker Jr., T. V.; J. Am. Chem. Soc. 1942, 64, 101.
2 Davis, W. W.; Krahl, M. E.; Cloves, G. H. A., J. Am. Chem. Soc. 1940, 62, 3086.

Components:
  1. 3-Methylcholantrene, $\ce{ C21H16 }$; [56-49-5] NIST WebBook
  2. Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data

The best value recommended by the authors is 1.5 × 10-6 g(1) L-1 (2). With the assumption that 1.00 L sln = 1.00 kg sln, the corresponding mass percent and mole fraction, x1, calculated by the compiler are 1.5 × 10-7 g(1)/100 g sln and 1.0 × 10-10.

Solubility of 3-methylcholanthrene in water
$T$ (°C)
27
27
27

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