DSC studies on the polymorphism and pseudopolymorphism of pharmaceutical substances - A complex system for studying physico-chemical behaviour of binary mixtures

K. Marthi, M. Ács, G. Pokol, K. Tomor, K. Eröss-Kiss

Research output: Article

6 Citations (Scopus)


A complex system including thermoanalytical methods, infrared spectroscopy and X-ray powder diffraction for studying physico-chemical behaviour of binary mixtures is described. This system has been tested by investigating binary mixtures of amphetamine hydrochloride salts. These studies have proved that among the selected compounds the primary and secondary amine hydrochloride salts exhibit conglomerate forming tendency, while the tertiary amine hydrochloride salts form molecular compounds (racemates). For the p-fluoro amphetamine hydrochloride the existence of two polymorphic modifications has been detected.

Original languageEnglish
Pages (from-to)1017-1025
Number of pages9
JournalJournal of thermal analysis
Issue number4
Publication statusPublished - ápr. 1 1992


ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Engineering(all)

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