Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 50: Issue 4

Phase diagrams of urea inclusion compounds 2. Stearic acid and urea

Authors:
Maria Kuhnert-Brandstätter Institute of Pharmacognosy, University of Innsbruck, Josef-Moeller-Haus, Innrain 52, A-6020 Innsbruck, Austria

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and
A. Burger Institute of Pharmacognosy, University of Innsbruck, Josef-Moeller-Haus, Innrain 52, A-6020 Innsbruck, Austria

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Pages:
559–567
Online Publication Date:
02 Aug 2005
Publication Date:
01 Nov 1997
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf01979028
Keywords:
binary systems; inclusion compounds; stearic acid; urea
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Abstract  

The stearic acid-urea binary system exhibits an unusual phase diagram, which, on the one hand, indicates an incongruently melting inclusion compound and on the other hand a miscibility gap in the liquid phases. The peritectic point lies near the melting point of urea and the unstable congruent melting point of the inclusion compound coincides with the melting point of urea. In addition to the processing of the phase diagram, the pure inclusion compound was prepared and its DSC curve, FTIR spectrum and X-ray diffractogram were recorded.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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