Introduction: The catalysed oxidation of the derivatives of aromatic aldehydes with inorganic moieties is still unstudied with an economically cheaper oxidant like potassium hexacyanoferrate (III). The catalyst like ruthenium (III) chloride is very much effective at very low concentrations for oxidation reactions. Aims: The study is carried out to observe and to get the results about the oxidative degradation of derivatives of organic and inorganic moieties. Methodology: Benzaldehyde sodium bisulphite (BSS) and substituted aromatic aldehyde sodium bi sulphite like p-chloro benzaldeyde sodium bisulphite, p-methyl benzaldehyde sodium bisulphite, etc. are dissolved in water, can be oxidized in good yield by potassium hexacyanoferrate (III) as PHF in aqueous alkaline medium in presence of ruthenium (III) chloride. Result: The process requires lesser time and probably an intermediate complex of ruthenium (III) chloride, substrate and oxidant give the products. Conclusion: Oxidative degradation of Benzaldehyde sodium bisulfite (BSS) and substituted aromatic aldehyde sodium bisulphite like p-chloro benzaldeyde sodium bisulphite, p-methyl benzaldehyde sodium bisulphite, etc. give moderate to good yield of corresponding aromatic acids in presence of potassium hexacyanoferrate (III) and ruthenium (III) chloride.