| Full text | |
| Author(s): |
Galico, D. A.
;
Nova, C. V.
;
Bannach, G.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY; v. 128, n. 1, p. 611-614, APR 2017. |
| Web of Science Citations: | 1 |
| Abstract | |
A new polymorphic form of the synthetic antioxidant propyl gallate was obtained by the recrystallization of the compound in acetone. The new form was characterized by thermogravimetry, differential scanning calorimetry, X-ray powder diffractometry, and near- and middle-infrared region spectroscopy. While the commercial form of propyl gallate starts to melt at 145 A degrees C with the maximum temperature of the peak at 150 A degrees C, the recrystallized form starts to melt at 140 A degrees C with the maximum temperature of the peak at 148.8 A degrees C. The two forms differ much in the X-ray powder diffractograms pattern, confirming the change in the long-distance interactions in both forms but the near- and middle-infrared region spectroscopy shows that no difference occurs in the inter- and intramolecular interactions. (AU) | |
| FAPESP's process: | 12/21450-1 - Thermoanalytical studies, synthesis and characterization of the solid co-crystals of ketoprofen with some co-formers |
| Grantee: | Gilbert Bannach |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 13/09022-7 - Thermoanalytical studies, synthesis and characterization of the solid co-crystals of antibiotics (fluoroquinolones) with some co-formers |
| Grantee: | Massao Ionashiro |
| Support Opportunities: | Regular Research Grants |