Structure and Physical Stability of Hydrates and Thermotropic Mesophase of Calcium Benzoate

Adsorption of Carboxylate Anions on a CaCO3 Surface

“…The pk values of the carboxylic acids studied here are shown in Table 1 + } ∞ chains alternating with layers of uncoordinated C 6 H 5 COO − anions [12]. Calcium benzoate hydrates (trihydrate and monohydrate) were also described by Terakita and Byrn [13].…”

Alkaline earth layered benzoates as reusable heterogeneous catalysts for the methyl esterification of benzoic acid

“…Calcium benzoate is different from the others in that it does not present a uniform sequence of basal diffraction peaks, due to the different crystal morphologies. [15][16][17][18] To calculate the basal distances of the synthesized benzoates, the peak of the highest possible order was used and the values calculated for BaBZ, SrBZ and CaBZ were 15.07, 15.73 and 16.5 Å, respectively. These values are consistent with the existence of double benzoate anion layers between metal centers, along the crystallographic axis "b", 15 taking the structure of calcium benzoate trihydrate as a reference (Figure 2).…”

Physicochemical Characterization of Pharmaceutical Solids

“…The weight loss observed during TGA corresponded to the stoichiometric water content of the hydrates (Fig. 2.3; Terakita and Byrn, 2006). The influence of grinding on the loss of acetonitrile from quinapril hydrochloride was characterized using TGA (Han and Suryanarayanan, 1997;Guo et al, 2000).…”

“…DTA has been most commonly used to determine temperatures at which thermal events occur. In the above study by Terakita and Byrn (2006), DTA was used as a complementary technique for the characterization of dehydration (Fig. 2.3).…”

“…TGA/DTA scans of (a) calcium benzoate trihydrate and (b) monohydrate using an open pan at 5 • C/min(Terakita and Byrn, 2006). Source: Reprinted with permission from Wiley-Liss, Inc., a subsidiary of John Wiley and Sons, Inc.…”