Journal of Thermal Analysis and Calorimetry

, Volume 123, Issue 3, pp 2523–2530 | Cite as

Solid-state thermal and spectroscopic studies of the anti-inflammatory drug sulindac using UV–Vis, MIR, NIR, DSC, simultaneous TG–DSC, and the coupled techniques TG-EGA-MIR and DSC–optical microscopy

  • Renan B. Guerra
  • Diogo A. Gálico
  • Bruno B. C. Holanda
  • Gilbert BannachEmail author


Simultaneous thermogravimetry–differential scanning calorimetry (TG–DSC), differential scanning calorimetry–optical microscopy (DSC–optical microscopy), online coupled thermogravimetry–infrared spectroscopy evolved gas analyses (TG-EGA-MIR), and spectroscopic techniques were used to study the non-steroidal anti-inflammatory drug sulindac in polymorphic form II. The TG–DSC curves, which were performed with the aid of DSC–optical microscopy, provided information concerning the thermal stability and decomposition profiles of the compound. From the TG-EGA-MIR coupled technique, it was possible to identify formaldehyde as a volatile compound that was released during thermal decomposition. A complete spectroscopic characterization in the ultraviolet, visible, near- and middle-infrared regions was performed in order to understand the spectroscopic properties of sulindac form II.


Sulindac Thermal behavior Spectroscopic studies Coupled TG-EGA-MIR DSC–optical microscopy 



The authors would like to thank the FAPESP (Proc. 2012/21450-1, 2011/03129-9 and 2013/04096-2) and CNPq foundations (Brazil) for their financial support.

Supplementary material

10973_2015_5228_MOESM1_ESM.tif (435 kb)
Fig. 1 S. 3D-MIR spectra Gram-Schmitt plots in an atmosphere of (a) dry air and (b) nitrogen (TIFF 434 kb)

Supplementary material 2 (WMV 3878 kb)


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2016

Authors and Affiliations

  • Renan B. Guerra
    • 1
  • Diogo A. Gálico
    • 1
  • Bruno B. C. Holanda
    • 1
  • Gilbert Bannach
    • 1
    Email author
  1. 1.Faculdade de Ciências, Departamento de QuímicaUNESP - Univ. Estadual PaulistaBauruBrazil

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