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Thermal Decomposition Kinetics of Ursodeoxycholic Acid Drug Crystal

S. Ramukutty, R. Jeyasudha, E. Ramachandran
Journal of Crystallization Process and Technology , Volume 7, pp 85-90; doi:10.4236/jcpt.2017.74006

Abstract: The crystallization of ursodeoxycholic acid drug crystals in gel by reduction of solubility method is the first of its kind to be reported in literature. Monoclinic crystalline form of the structure was confirmed using single crystal X-ray diffraction analysis. This report deals with the kinetic analysis made from the thermogravimetric analysis/differential thermal analysis (TGA/DTA) data using Coats-Redfern (CR) relation. Thermodynamic parameters were also determined. Arrhenius equation for ursodeoxycholic acid was derived as k = 3.10 × 1010 e−172581/RT mol−1•s−1.
Keywords: thermal / structure / crystals / Thermodynamic / Ursodeoxycholic acid / monoclinic / Tga/dta / Mol / analysis/differential

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