A spectrophotometric study of the metal chelates of resacetophenone oxime,3

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  • A spectrophotometric study of the metal chelates of resacetophenone oxime , 3

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<jats:title>Abstract</jats:title> <jats:p>RAPOX (resacetophenone oxime) in certain water-immiscible organic solvents is found to extract nickel from an aqueous medium as a nickel RAPOXimate complex. Cyclohexanone was found to be the best solvent for this purpose. The brilliant green-coloured solution of the complex in cyclohexanone gave a maximum absorption at 600 mμ on a Beckman spectrophotometer DU. The coloured solution obeyed Beer’s law in the lowest range—six parts per million. The extraction of this complex was quantitative in the pH range from 8 to 11.</jats:p> <jats:p>The composition of the complex as determined by Job’s method and the slope ratio method in a two-phase system was 1 : 2 (nickel to RAPOX). The back extraction study for the metal from the complex in the organic solvent was carried out and quantitative results obtained using an aqueous solution with a pH value below four.</jats:p>

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