Components:
(1) 3-Methylcholantrene,
C21H16; [56-49-5]
NIST WebBook
(2) Water,
H2O; [7732-18-5]
NIST WebBook
Original Measurements
Mackay, D.; Shiu, W. Y.; J. Chem. Eng. Data. 1977, 22, 399-402.
Variables:
Ambient temperature: 25 °C
Prepared by:
Method/Apparatus/Procedure:
A saturated solution of (1) in (2) was vigorously stirred in a 250 mL flask for 24 hrs. and subsequently settled at 25 °C for at least 48 hrs. Then the saturated solution was decanted and filtered and 50-100 mL extracted with approximately 5 mL of cyclohexane in a separatory funnel. After shaking for 2 hrs. the cyclohexane extract was removed for analysis. An Aminco-Browman spectrophotofluorometer (American Instruments Ltd.) was used for analysis. Many details are given in the paper.
Source and Purity of Materials:
- Aldrich Chemicals, Eastman Kodak, or K and K Laboratories, commercial highest grade; used as received.
- doubly distilled.
Estimated Errors:
Mass concentration (m/v) (1): ±0.0000 21 mg(1) dm-3sln (maximum deviation from several determinations).
Experimental Values:
Note: The solubility of 3-methylcholanthrene in water at 25°C was reported to be 0.0029 mg(1) dm-3 sln and x1 = 1.92 × 10-10.The corresponding mass percent calculated by the compiler is 2.9 × 10-7 g(1)/100 g sln.
