IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Acenaphthene with Water
Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Acenaphthene; C12H10; [83-32-9]  NIST Chemistry WebBook for detail
Original Measurements:
   Rossi, S.S.; Thomas, W.H., Environ. Sci. Technol. 1981, 15, 715-6.

 Variables:
   Temperature = 25 °C

 Prepared By:
   G.T. Hefter

 Experimental Remarks:
   The solubility of acenaphthene in distilled water at 25°C was reported to be 2.42 µg/g, corresponding to a mole fraction, x1, of 1.6 × 10–8. The corresponding mass per cent calculated by the compiler is 2.42 × 10–4 g(1)/100 g sln.

 Experimental Data:   (Notes on the Nomenclature)
   Method/Apparatus/Procedure:
   Flasks containing 500 mL of water and (1) were placed in a constant temperature (± 0.1°C) gyrotary shaker (200 rpm) for at least 24 h. Following a 12 h stationary equilibration period, 100 mL of saturated solution was drained through a glass-wool plug into a separatory funnel. Acenaphthene was isolated from solution by triplicate extraction with 10 mL of hexane, which recovered over 99% of hydrocarbon as determined in experiments with spiked solutions. Acenaphthene levels in concentrated extracts were determined on a Hewlett-Packard Model 5840A gas chromatograph using a WCOTSP-2100 glass column (30 m x 0.25 mm i.d.). Hydrocarbon concentrations in extracts were additionally determined by ultraviolet spectrophotometry. Agreement was typically within 2%. Further details are given in the paper.

 Source and Purity of Materials:
   (1) Aldrich; 99.9% purity; recryst. Twice from dist. MeOH.
   (2) Doubly distilled in all-glass apparatus; free of trace organics.

 Estimated Errors:
   Solubility: ± 0.02 µg/g (std. dev. for 6 determinations)
   Temperature: ± 0.1°C