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Indicators used in titrations show well-marked changes of color in certain intervals of pH. Most of these indicators are organic dyes and are of synthetic origins. The present study was designated to evaluate the extracted flower petals of some easily available plants. A comparative study of Delonix regia Raf. and Caesalpina pulcherrima Swartz Obs. flower extracts with synthetic indicator viz. phenolphthalein...
Indicators used in titration show well-marked changes of color in certain intervals of pH. Most of these indicators are organic dyes and are of synthetic origin. The environmental pollution caused by chemical industries in the synthesis of organic dyes had made the scientist in the developing country to enter in to an era, in which plant product serve as an alternative to synthetic products. The advantages...
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