Dimethyl-2-hydroxyacetophenone oxime as an analytical reagent: Spectrophotometric determination of copper (II), nickel (II), cobalt (II) and palladium (II)

Copper (II), nickel (II), cobalt (II) and palladium (II) form buff green, yellowish orange and yellow coloured precipitate with 4, 5-dimethyl-2-hydroxyacetophenone oxime, which are extractable into non-acqueous solvents as chloroform, carbontetrachloride, ethylacetate etc. having g max (nm) 640, 600, 400 and 400 respectively. Spectrophotometric determination of these metal-ions was carried out successfully even in the presence of foreign ions. Determination of copper (II) and nickel (II) in a mixture was also carried out. Composition, stability constant, Beer's law range and molar extinction co-efficient of the complexes were calculated spectrophotometrically. (Mrs. M. Mittal, Shri Keemtilal, Shri S.P. Gupta; Department of Chemistry, D.N. College, Meerut)