Halogen-Free Water-Immiscible Ionic Liquids Based on Tetraoctylammonium Cation and Dodecylsulfate and Dodecylbenzenesulfonate Anions, and Their Application as Chelate Extraction Solvent | Zendy

Toshihide Tsukatani | Zendy; Hajime Katano | Zendy; Hirosuke Tatsumi | Zendy; Mika Deguchi | Zendy; Naoki Hirayama | Zendy

Open Access

Halogen-Free Water-Immiscible Ionic Liquids Based on Tetraoctylammonium Cation and Dodecylsulfate and Dodecylbenzenesulfonate Anions, and Their Application as Chelate Extraction Solvent

Author(s) -

Toshihide Tsukatani,

Hajime Katano,

Hirosuke Tatsumi,

Mika Deguchi,

Naoki Hirayama

Publication year - 2006

Publication title -

analytical sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.392

H-Index - 73

eISSN - 1348-2246

pISSN - 0910-6340

DOI - 10.2116/analsci.22.199

Subject(s) - chemistry , sodium dodecylbenzenesulfonate , inorganic chemistry , extraction (chemistry) , solvent , ionic liquid , halogen , ionic bonding , chelation , divalent , aqueous solution , ion , chromatography , organic chemistry , catalysis , alkyl

The tetraoctylammonium cation forms water-immiscible room temperature ionic liquids with dodecylsulfate and dodecylbenzenesulfonate anions. The ionic liquids are halogen-free and can be considered environmentally friendly solvents. At 25 degrees C, the solubilities of water in tetraoctylammonium dodecylsulfate and tetraoctylammonium dodecylbenzenesulfonate were 2.8 and 4.0%, respectively, and the densities were 0.92 and 0.93 g cm(-3). The ionic liquids formed stable interfaces with water at 25 degrees C. The possible use of tetraoctylammonium dodecylsulfate as chelate extraction solvent was evaluated by using 4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione as extractant. Tetraoctylammonium dodecylsulfate showed high extraction performance for divalent transition metal cations.

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