Solubility of Diosgenin in Several Imidazolium-Based Ionic Liquids

Autor:	Jing Su, Kedi Yang, Yun-Fei Long, Kejia Tao, Li Ge, Guo Liangchi
Rok vydání:	2014
Předmět:	Atmospheric pressure General Chemical Engineering Inorganic chemistry General Chemistry Diosgenin Atmospheric temperature range C4mim Mole fraction chemistry.chemical_compound chemistry Ionic liquid Physical chemistry Solubility Imide
Zdroj:	Journal of Chemical & Engineering Data. 60:11-15
ISSN:	1520-5134 0021-9568
DOI:	10.1021/je5004324
Popis:	The solubility of diosgenin in four pure imidazolium-based ionic liquids, including [C4mim]NO3 (1-butyl-3-methylimidazolium nitrate), [C2mim]NTf2 (1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide), [C4mim]NTf2 (1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide), and [C8mim]NTf2 (1-octyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide), were determined in the temperature range from (312.85 to 363.95) K at atmospheric pressure via a laser monitoring observation method. The solubility of diosgenin in the selected ionic liquids increased with increasing temperature. Diosgenin was especially soluble in [C8mim]NTf2, with a mole fraction of (0.287–1.630) × 10–3 at (312.85 to 332.25) K. The experimental data were successfully correlated using the dual-parameter empirical equation, Apelblat equation, and λh equation.
Databáze:	OpenAIRE
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