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Abstract : The current study looks into a new spectrophotometric approach for determining masalazine in depth. The method is based on an oxidative coupling reaction of the chemical with trihydroxy benzoic acid in an acidic medium in the presence of potassium chromate as an oxidant to produce a stable –Brown coloured product with maximum absorbance at 390 nm. 2863.62 l.mol-1.cm-1 molar absorptivity. In the range of (0.4 -24) ppm, Beer's law was followed.

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