文献类型：期刊文献

英文题名：Solubility of 2,6-diaminopyridine in toluene, o-xylene, ethylbenzene, methanol, ethanol, 2-propanol, and sodium hydroxide solutions

作者：Chen, Xu-Hui[1]; Zeng, Zuo-Xiang[1]; Xue, Wei-Lan[1]; Pu, Tong[2]

机构：[1] Institute of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, China; [2] Zhejiang Charioteer Pharmaceutical Company Limited, 371321 Taizhou, Zhejiang, China

年份：2007

卷号：52

期号：5

起止页码：1911

外文期刊名：Journal of Chemical and Engineering Data

收录：EI(收录号：20074110858440)

语种：英文

外文关键词：Atmospheric pressure - Binary mixtures - Enthalpy - Ethylbenzene - Sodium compounds - Solubility

摘要：Solubilities are reported for 2,6-diaminopyridine dissolved at atmospheric pressure in toluene, o-xylene, and ethylbenzene from (273.25 to 361.25) K, methanol, ethanol, and 2-propanol between (266.15 and 321.25) K, and sodium hydroxide solution containing mass fraction of 0.000% to 17.308% sodium hydroxide over the temperature range of (273.55 to 326.35) 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 very reasonable mathematical representation, with average deviations between experimental values and calculated ones being on the order of ±2.2% or less. The coupler parameters of the Margules equation (A21, A12) and the enthalpy of fusion (ΔfusH) of 2,6-diaminopyridine in different systems are obtained by regressing the experimental data. ? 2007 American Chemical Society.