IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Naphthalene with Water
Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Naphthalene; C10H8; [91-20-3]  NIST Chemistry WebBook for detail
Original Measurements:
   Eganhouse, R.P.; Calder, J.A., Geochim. Cosmochim. Acta 1976, 40, 555-61.

 Variables:
   Temperature = 25 °C

 Prepared By:
   A. Maczynski

 Experimental Remarks:
   The solubility of naphthalene in water at 25°C was reported to be 31.3 mg(1)/kg(2) and 2.43 × 10–4 mol(1) dm–3(2).

The corresponding mass percent and mole fraction, x1, calculated by the compiler are 3.13 × 10–3 g(1)/100 g sln and 4.40 × 10–6.

Experimental Data:   (Notes on the Nomenclature)
   Method/Apparatus/Procedure:
   A mixture of 500 mL (2) and 0.001 mol (1) was equilibrated in an Erlenmeyer flask for 12 h (agitation) + 24 h (stationary). The saturated solution, 100 mL, was extracted with hexane, concentrated by evaporation under nitrogen and analyzed by glc. A 5700 A Hewlett-Packard instrument equipped with dual compensating columns and flame ionization detectors was employed.

 Source and Purity of Materials:
   (1) source not specified; analytical grade; used as received; no impurities by glc.
   (2) double distilled; free of trace organics.

 Estimated Errors:
   Solubility: ± 0.4 mg(1)/kg(2) (from eight determinations)
   Temperature: ± 0.5°C