Analysis of bulk sample of salicylic acid by application of hydrotropic solubilization method
Department of Pharmacy, Shri G.S. Institute of Technology and Science, 23, Park Road, Indore-452 003, India
R K Maheshwari Department of Pharmacy, Shri G.S. Institute of Technology and Science, 23, Park Road, Indore-452 003 India E-mail: [email protected]
In the present investigation, the poorly water-soluble drug, salicylic acid has been solubilized using 0.5 M ibuprofen sodium and 2.0 M sodium salicylate solution as hydrotropic agents for the titrimetric analysis precluding the use of organic solvents. Both hydrotropes are economic and pollution-free. The mean percent estimation of salicylic acid estimated in bulk sample by Indian Pharmacopoeial method is 98.78%. The mean percent estimation by ibuprofen sodium method and sodium salicylate method are 99.25% and 98.82%, respectively. The results of analysis by the proposed method are very close to the results of analysis by the standard method. This confirms the accuracy of the proposed method. The proposed method was validated statistically by low values of statistical parameters viz. standard deviation, percent coefficient of variation and standard error. The proposed method is new, accurate, simple and economic.