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Solubility and dissolution enthalpy of xanthine

Königsberger, E.ORCID: 0000-0002-4606-0741, Wang, Z., Seidel, J. and Wolf, G. (2001) Solubility and dissolution enthalpy of xanthine. The Journal of Chemical Thermodynamics, 33 (1). pp. 1-9.

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At a constant ionic strength corresponding to human urine (Ic = 0.300 mol•dm-3), the solubilities of xanthine were measured as a function of -lg{c(H+)/co} (co = 1 mol•dm-3) at the temperatures T = 298.15 K and T = 310.15 K, respectively. Highly reproducible solubility and dissociation constants were obtained. Also, for the first time, the dissolution enthalpy of xanthine was determined calorimetrically. The values of this quantity obtained from both calorimetric determination and temperature dependence of solubility equilibrium constants are thermodynamically consistent.

Item Type: Journal Article
Publisher: Academic Press
Copyright: © 2001 Academic Press
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