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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Polymorphism in propyl gallate recrystallized with acetone

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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 type: 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 type: Regular Research Grants