Solubility System: Benzo[e]pyrene with Water (Original Report)

Components:
(1) Benzo[e]pyrene, C20H12; [192-97-2] NIST Chemistry WebBook
(2) Water, H2O; [7732-18-5] NIST Chemistry WebBook
Variables:
Temperature: 8.6°C - 31.7°C
Prepared By:
Andrzej Maczynski
Experimental Data:
Table 1
T (°C)c1 (mol/L)x1 s1 (g/100 g)
8.61.29 ± 0.072.32 x 10103.25 x 107
14.01.42 ± 0.052.56 x 10103.58 x 107
17.01.76 ± 0.133.17 x 10104.44 x 107
17.51.56 ± 0.082.81 x 10103.94 x 107
20.01.82 ± 0.093.28 x 10104.59 x 107
20.21.90 ± 0.143.42 x 10104.79 x 107
23.02.01 ± 0.20 x 10-83.62 x 10105.07 x 107
23.22.12 ± 0.10 x 10-83.82 x 10105.35 x 107
29.22.55 ± 0.02 x 10-84.59 x 10106.43 x 107
31.72.70 ± 0.15 x 10-84.86 x 10106.81 x 107
Method/Apparatus/Procedure:

Two methods were used.

At 25 °C the solubility of (1) in (2) was determined from UV absorption measurements and was used as a standard at other temperatures. At other temperatures the spectrofluorimetry method was used.

The sealed fluorescence cells contained 5 mL of the aqueous solution and an excess of (1) were rotated at least 72 h in a water bath, then removed, quickly wiped dry and placed in the fluorimeter.

Source and Purity of Materials:

(1) Source not specified; better than 99 mole%, by glc; used as received.
(2) Distilled over KMnO4 and NaOH and passed through a Sephadex column.

Estimated Errors

Temperature: ±0.1°C
Solubility: See above.

References:

No references.

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