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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/17189

Title: Colorimetric and Bromometric Determination of Pirbuterol Hydrochloride
Authors: Mohamed E. Mohameda
Hesham A. Kandila
Mohammad A. Abounassifa
Y. Aboul-eneinb
Issue Date: 1988
Publisher: Analytical Letters
Abstract: Two proposed methods are reported for the quantitation of pirbuterol hydrochloride, namely, (i) colorimetric and (ii) titrimetric methods. The colorimetric method is based on coupling betweem diazotized sulphanilamide and pirbuterol hydrochloride. Under the optimum conditions studied, the coupling product exhibits a maximum at 440 nm. Linear relation between absorbance, A, and concentration of pirbuterol hydrochloride is in the range 5-40 μgml-1. The mean percentage obtained for capsules (ExirelR -15 mg) was 100.8 ± 0.7 whereas mean percentage recovery obtained for the authentic drug was 100.5 ± 0.8. The titrimetric procedure involves bromination of authentic pirbuterol in acid medium and residual titration of excess bromine. The stoichiometry of the reaction was investigated and infra-red analysis, of the bromoderivative was carried out. When applied to capsules the bromometric method gave mean percentage of 100.18 ± 2.25.
URI: http://hdl.handle.net/123456789/17189
Appears in Collections:College of Pharmacy

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