Journal of thermal analysis

, Volume 50, Issue 4, pp 559–567 | Cite as

Phase diagrams of urea inclusion compounds

2. Stearic acid and urea
  • Maria Kuhnert-Brandstätter
  • A. Burger
Article

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.

Keywords

binary systems inclusion compounds stearic acid urea 

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Copyright information

© Akadémiai Kiadó 1997

Authors and Affiliations

  • Maria Kuhnert-Brandstätter
    • 1
  • A. Burger
    • 1
  1. 1.Institute of PharmacognosyUniversity of InnsbruckInnsbruckAustria

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