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  A contribution to the mandelic acid phase diagram

Lorenz, H., & Seidel-Morgenstern, A. (2004). A contribution to the mandelic acid phase diagram. Thermochimica Acta, 415, 55-61. doi:10.1016/j.tca.2003.09.029.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-9EA3-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-B893-7
Genre: Journal Article

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 Creators:
Lorenz, H.1, Author              
Seidel-Morgenstern, A.1, 2, Author              
Affiliations:
1Physical and Chemical Foundations of Process Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society, ou_1738150              
2Otto-von-Guericke-Universität Magdeburg, External Organizations, ou_1738156              

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 Abstract: Literature data on the mandelic acid phase diagram are reviewed and examined together with new own results in order to clarify the heterogeneous equilibria in the binary system of the mandelic acid enantiomers and the racemate in water. For this purpose the thermal stability and the melting and recrystallization behavior of racemic mandelic acid are studied using TG and DSC. A metastable racemic phase is prepared from the melt and solution and identified by means of DSC, XRPD and IR spectroscopy as a monotropic modification of the stable racemic compound. Problems associated with handling the metastable phase are addressed. Finally, a mandelic acid phase diagram modified by polymorphy of the racemate is suggested. © 2003 Elsevier B.V. All rights reserved. [accessed 2010 November 27th]

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Language(s): eng - English
 Dates: 2004
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 207981
Other: 43/04
DOI: 10.1016/j.tca.2003.09.029
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Title: Thermochimica Acta
  Other : Thermochim. Acta
Source Genre: Journal
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Affiliations:
Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 415 Sequence Number: - Start / End Page: 55 - 61 Identifier: ISSN: 0040-6031
CoNE: https://pure.mpg.de/cone/journals/resource/954925449791