2-Hydroxy 4-n-Propoxy Valerophenone Oxime as A Spectrophotometric Reagent for Iron (III)

B. R. Naik and K. K. Desai

Department erf Chemistry, South Gujarat University, Surat 395 007 INDIA.

ABSTRACT:

2-Hydroxy 4-n-propoxy valerophenone oxime [HPVOX] has been used for the spectrophotometry determination of Fe(lll) at pH 2.5 in 75% aqueous ethanol medum. Job's method of continuous variation and Yoe and Jones mole ratio method show metal:ligand ratio in the complex to be 1:1. The stabilty constant of the complex is found to be 4.075x105. The standard free energy change for the complex formation reaction is found to be -7.78 K.cal/mole at room temperature. The Beer law is obeyed upto 16.75 ppm of Fe(lll) ion. The molar absorptivity of complex at 500 nm is found to be 8.40x102 lit. mol-1 .cm-1. The reagent has also been found to give quite satisfactory results for the analyss of iron in pharmaceutical preparations and dolomite ore.

KEYWORDS:

Valerophenone; Spectrophotometric; Pharmaceutical

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Copy the following to cite this article: Naik B. R, Desai K. K. 2-Hydroxy 4-n-Propoxy Valerophenone Oxime as A Spectrophotometric Reagent for Iron (III). Orient J Chem 1994;10(3).

Copy the following to cite this URL: Naik B. R, Desai K. K. 2-Hydroxy 4-n-Propoxy Valerophenone Oxime as A Spectrophotometric Reagent for Iron (III). Orient J Chem 1994;10(3). Available from:http://www.orientjchem.org/?p=38294