Du comportement thermique de la khelline

descriptionPublicationkeyboard_double_arrow_right Article 01 Aug 1979 French Publisher:Springer Science and Business Media LLCJournal:Journal of Thermal Analysis, volume 16, pages 341-354 (issn: 0368-4466,

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Authors: J. Masse; R. Malaviolle; A. Chauvet;

doi: 10.1007/bf01910696

Du comportement thermique de la khelline

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Abstract

Le comportement thermique de la khelline a ete etudie par thermomicroscopie, analyse calorimetrique differentielle, analyse thermique differentielle et par mesure de la transparence. Le polymorphisme de ce principe actif a ete decele a l'aide des differentes methodes; la forme commerciale (I) fondant a 153.3° et la forme (II) a 150.3° ont ete identifiees, leurs enthalpies (7725±166 cal·mole−1, 6668±230 cal·mol−1), leurs entropies (18.17±0.41, 15.76+0.54) de fusion respectives evaluees, le taux de purete de la forme (I) determine.

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