Ghani, Lubna published the artcileLiquid-liquid extraction of Eu(lll) using synergic mixture of 1-phenyl-3-methyl-4-trifluoroacetyl-2-pyrazolin-5-one and crown ethers, Quality Control of 1691-93-6, the main research area is europium HPMTFP crown ether liquid extraction.
Synergic extraction of Eu(III) as representative of rare earth elements was conducted with 0.01 mol dm-3 of trifluoroacetyl-pyrazolin-5-one (HPMTFP) and then with synergic mixture of HPMTFP and crown ethers (benzo-15-crown-5, 18-crown-6, 15-crown-5) in dichloromethane (DCM) from aqueous solution having pH 1.0-3.5. Slope anal. method was used for determining the composition of the synergic adduct i.e. Eu(PMTFP)3 that came out to be Eu(PMTFP)3·2S, where S = neutral oxo-donor and -PMTFP = conjugate base of HPMTFP mol. Selective extraction of Eu(III) was found in the presence of various masking agents like citrate, oxalate, bromide, thiosulfate, chromate ions and of some cations. The accuracy of the developed procedure was checked by analyzing real lake sample (IAEA-SL-3) as a reference material.
SN Applied Sciences published new progress about Actinides Role: TEM (Technical or Engineered Material Use), USES (Uses). 1691-93-6 belongs to class pyrazoles-derivatives, name is 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, and the molecular formula is C12H9F3N2O2, Quality Control of 1691-93-6.
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics