Solvent extraction of La3+ with ethylenediamine-N,N '-ditetradecyl-N,N '-diacetic acid (EDDAT) in dichloromethane

YURDAKOÇ M., Hosgoren H.

TURKISH JOURNAL OF CHEMISTRY, vol.22, no.4, pp.373-377, 1998 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 4
  • Publication Date: 1998
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.373-377
  • Dokuz Eylül University Affiliated: No


Ethylenediamine-N,N'-ditetradecyl-N,N'-diacetic acid (EDDAT) was synthesized for the solvent extraction of La3+. EDDAT was prepared from ethylenediamine-N,N'-diacetic acid (EDDA) and tetradecyl bromide in a basic n-amylalcohol-ethanol-water solvent system. The structure of this new extracting reagent was identified according to spectroscopic data, i.e. C-13 NMR, H-1 NMR, and elemental analysis results. The solvent extraction of La3+ with EDDAT in dichloromethane was studied as a function of parameters of the aqueous and organic phases. The optimal extraction conditions were determined. The extraction yield increased with a decrease in hydrogen ions in the aqueous phase. Stripping of the La3+ loaded organic phase was achieved with HCl aqueous solution. The effect of stripping as a function of the HCl concentration was also studied.