Solubility of 2,6-Diamino-3,5-dinitropyridine and 2,5-Dihydroxyterephthalic Acid in N,N-Dimethylformamide, Dimethylsulfoxide, Ethanol, and Methanol, N,N-Dimethylacetamide, and Acetic Acid

Autor:	Zhen Hu, Xiang-Li Meng, Jun Long, Yuan-Jun Song, Y. D. Huang, Yan-Hong Wang
Rok vydání:	2009
Předmět:	chemistry.chemical_classification Ethanol Chemistry General Chemical Engineering Enthalpy of fusion General Chemistry Dimethylacetamide Solvent chemistry.chemical_compound Acetic acid Dicarboxylic acid Organic chemistry Methanol Solubility Nuclear chemistry
Zdroj:	Journal of Chemical & Engineering Data. 55:561-565
ISSN:	1520-5134 0021-9568
DOI:	10.1021/je900367v
Popis:	Solubility was reported for 2,6-diamino-3,5-dinitropyridine in N,N-dimethylformamide at (304.15 to 357.15) K, dimethylsulfoxide at (304.15 to 339.15) K, ethanol at (305.15 to 340.15) K, methanol at (293.15 to 339.15) K, and 2,5-dihydroxyterephthalic acid in N,N-dimethylformamide at (298.15 to 370.15) K, dimethylsulfoxide at (293.15 to 342.15) K, N,N-dimethylacetamide at (318.15 to 355.55) K, and acetic acid at (320.15 to 369.15) K. Results of these measurements are fitted with the combined binary solvent Margules equation. For the systems studied, the Margules equation is found to provide reasonable mathematical representation, with the average deviations between experimental values and calculated ones being on the order of ± 1.0 % and ± 0.2 % or less. Furthermore, the coupler parameters of the Margules equation (A21, A12) and the enthalpy of fusion (ΔfusH) were obtained by the Levenberg−Marquardt method and Global Optimization method.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b778240f17c1a60a2a865f1634031e64 https://doi.org/10.1021/je900367v Zobrazit plný text záznamu