IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Pentane with Water

Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Pentane; C5H12; [109-66-0]  NIST Chemistry WebBook for detail

Original Measurements:
   Jonsson, J.A.; Vejrosta, J.; Novak, J., Fluid Phase Equil. 1982, 9, 279-86.

Variables:
   Temperature = 15-35 °C

Prepared By:
   G.T. Hefter

Experimental Data:   (Notes on the Nomenclature)

Solubility of pentane in water
t/°C	10³ * g₁/kg	10³ * g₁/100 g solution (compiler)	10⁵ * Mole Fraction x₁ (compiler)
15	42.9	4.29	1.07
20	41.4	4.14	1.03
25	40.6	4.06	1.01
30	40.3	4.03	1.01
35	40.6	4.06	1.01

Notes:
   Table 1  ^a  Solubility values were calculated by the authors from their smoothed air-water partition coefficient (K_AW) by assuming K_AW values obtained at infinite dilution were valid at the saturation pressure of (1).

Method/Apparatus/Procedure:
   Air-water partition coefficients were measured by saturating a portion of water by a stream of nitrogen containing a known vapour concentration of (1). After equilibration, the dissolved (1) was absorbed in a porous polymer trap and the entrapped (1) analysed by gas chromatography. The method and apparatus are described in detail in ref 1.

Source and Purity of Materials:
   (1) Fluka, >99.8%, used as received.
   (2) not specified.

Estimated Errors:

   Temperature: not specified.

References:
   ¹Vejrosta, J.; Novak, J; Jonsson, J.A. Fluid Phase Equil. 1982, 8, 25-35.