Collect. Czech. Chem. Commun. 2006, 71, 1427-1444

Complexing and Extraction Properties of Triethylene Glycol Bis(dodecyl Phosphate)

Věra Novoměstskáa, Jiří Příhodaa,* and Eckhard Herrmannb

a Department of Inorganic Chemistry, Faculty of Science, Masaryk University, Kotlářská 2, CZ-61137 Brno, Czech Republic
b University of Applied Sciences Dresden, Friedrich-List-Platz 1, D-01069 Dresden, Germany


The extraction of Mg(II), Ca(II), Sr(II), Ba(II), Mn(II), Co(II), Ni(II), Cu(II), Eu(III) and Am(III) from mineral acid solutions with triethylene glycol bis(dodecyl phosphate) (H2A = HO(H25C12O)P(O)(OCH2CH2)3OP(O)(OC12H25)OH) in different diluents was investigated. The formation of complexes was followed by NMR spectrometry; their composition in the organic phase was determined by slope analysis and proved by MALDI-TOF mass spectrometry. MII(HA)2 and MIII(HA)A species are formed in the organic phase while Mz+(H2m-zAmz-nOcOH species (m = 2 or 3; n = 0, 1, 2; z = 2 or 3) in (octan-1-ol)-containing diluents.

Keywords: Phosphates; Ethylene glycols; Divalent metal cations; Complexing agents; Extraction agents; Liquid-liquid extraction.

References: 13 live references.