A simple static method based on gravimetric measurements has been adopted to measure the solubility ofbenzenecarboxylic acid, 2-hydroxy-benzenecarboxylic acid, 4-hydroxy-benzenecarboxylic acid and 1,8-dihydroxyanthraquinonealong several isotherms in the temperature range 318–357 K and the pressure interval 7–23 MPa.Solubility data have been correlated with the Zieger–Eckert approach, using the Fedor atomic and group contributionmethod to estimate the solubility parameter and the molar volume of the solutes. A good agreement wasobtained between data reported in the literature and those determined using the proposed method which allows oneto measure solubility mole fraction as low as 10−5. Provided that a suitable analytical technique is adopted themethod can be extended also to multicomponent systems.
|Numero di pagine||11|
|Rivista||THE JOURNAL OF SUPERCRITICAL FLUIDS|
|Stato di pubblicazione||Published - 2002|
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