1992•Chinese Journal of PharmaceuticalsRequires access
QUANTITATIVE DETERMINATION OF PREPARATIONS CONTAINING BENZOIC AND SALICYLIC ACIDS BY DUAL WAVELENGTH ABSORBANCE RATIO METHOD
Zhi Liu
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Abstract
Using dual wavelength absorbance ratio method,benzoic acid andsalicylic acid in the preparations were determined.The average recovery for ben-zoic acid and salicylic acid was found to be 100.1 and 100.7%.The coefficientof variation was 0.38 and 0.41%.The method was simple,rapid and precise.