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Research Paper | Chemistry | Libya | Volume 6 Issue 7, July 2017
Determination of Hydroquinone in Some Pharmaceutical and Cosmetic Preparations by Spectrophotometric Method
Hawaa S. Elferjani  | Najw H. S. Ahmida | Aziza Ahmida
Abstract: In This study thirteen skin lighting creams are available in Libyan markets in Benghazi and Pharmaceutical Preparations were used to determine the content of hydroquinone by A rapid and simple UV spectrophotometric procedures. The labels on the packages noticeably did not show the content of hydroquinone. All samples were analysed by a UV spectrophotometer, Beers law was obeyed in the range of 10- 40 g/ml at 290nm using 0.05M H2SO4 as solvent with linear regression coefficient of 0.9994. The results showed the concentration of hydroquinone in all cosmetic samples ranged from 0.008 % to 0.210 %. The effect of time has been studied.
Keywords: hydroquinone, spectrophotometry, pharmaceutical and cosmetic preparations
Edition: Volume 6 Issue 7, July 2017,
Pages: 2219 - 2224
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