Umetani, Shigeo published the artcileThe solvent extraction of divalent metals with 1-phenyl-3-methyl-4-trifluoroacetylpyrazol-5-one and TOPO as the group separation and concentration methods of trace metals, Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, the main research area is divalent metal separation water analysis.
The synergistic extraction of divalent metals with 1-phenyl-3-methyl-4-(trifluoroacetyl)pyrazol-5-one (I) [1691-93-6] and trioctylphosphine oxide (II) [78-50-2] was studied for cyclohexane solutions containing 0.02-0.05M I and 0.01M II. Extraction >98% was obtained for Cu, Mn, Zn, Co, Pb, Cd, Fe, and Ni as divalent ions in aqueous solutions buffered to pH 1.5-2.8. The VO2+ extraction was incomplete. At pH 2.4-4 a quant. extraction was obtained for Ca, Mg, Sr, and Ba. The method is suitable for group separation and concentration of trace metals from natural waters, especially for emission spectroscopy.
Bulletin of the Institute for Chemical Research, Kyoto University published new progress about Divalent metals. 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, Recommanded Product: 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one.
Referemce:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics