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Solubility of Chiral Threonine Species in Water/Ethanol Mixtures

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Sapoundjiev,  D.
Physical and Chemical Foundations of Process Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society;
Otto-von-Guericke-Universität Magdeburg, External Organizations;

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Lorenz,  H.
Physical and Chemical Foundations of Process Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society;

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Seidel-Morgenstern,  A.
Physical and Chemical Foundations of Process Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society;
Otto-von-Guericke-Universität Magdeburg, External Organizations;

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Citation

Sapoundjiev, D., Lorenz, H., & Seidel-Morgenstern, A. (2006). Solubility of Chiral Threonine Species in Water/Ethanol Mixtures. Journal of Chemical and Engineering Data, 51(5), 1562-1566. doi:10.1021/je060053h.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-9A03-1
Abstract
Solubility equilibria of threonine in water/ethanol mixtures were measured in the temperature range between (10 and 46)°C. Threonine exhibits good solubility in water and is hardly soluble in ethanol. The ternary-phase diagram of the threonine enantiomers in the solvents used reveals the presence of a conglomerate-forming system. Threonine shows ideal solution behavior (i.e., heterochiral interactions do not occur in solution). To correlate the measured data with regard to temperature and solvent composition, a simple empirical approach is proposed. The correlation presented is of interest for calculation of solubilities when designing crystallization or chromatography-based processes to separate the threonine enantiomers. Copyright © 2006 American Chemical Society [accessed 2013 November 27th]