Journal: Inter. J. of Chemical and Analytical Science
Article Id:JPRS-AC-0000353 Title:Simultaneous Spectrophotometric Estimation of Paracetamol and Aceclofenac in Combined Tablet Formulations using Hydrotropic Solubilization Technique Category:Analytical Chemistry Section:Research Article
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Quantitative estimation of poorly water-soluble drugs involves the use of organic solvents. Major drawbacks of organic solvents include high cost, toxicity, volatility and pollution. In the present investigation, the hydrotropic solubilization is employed to enhance the aqueous solubilities of poorly water-soluble drugs, paracetamol and aceclofenac in two-component tablet formulation for simultaneous spectrophotometric determination. Three simple, precise, accurate and economical procedures employed are simultaneous equation method, absorbance ratio method and multicomponent mode of analysis. All the methods utilize the combined hydrotropic blend of 20% urea solution and 20% sodium citrate solution precluding the use of organic solvent. In the mixed hydrotropic solution, paracetamol and aceclofenac shows maximum absorption at 245 nm and 274 nm, respectively and isoabsorptive point observed was 262 nm. The hydrotropic agents show no absorbance above 237 nm. The hydrotropicagents as well as tablet excipients in formulation did not interfere in the analysis. The results of analysis have been validated statistically.