Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry and Computational Chemistry


Comparative study of natural and synthetic indicators

Author(s): Sarita Kadam, Adhikrao Yadav, Vijay Raje and Karishma Waghmare

Today synthetic indicators are the choice of acid-base titrations. But due to environmental pollution, availability and cost, the search for natural compounds as an acid-base indicator was started. The present vocation highlights the exploit of the acidified methanolic extract of the flowers of few medicinal plants as an acid-base indicator in acid-base titrations. This natural indicator is easy to extract as well as easily available. Promising results were obtained when it was compared against standard synthetic indicators. Titration shows sharp color change at the equivalence point. The equivalence points obtained by the flowers extract coincide with the equivalence points obtained by standard indicators. These natural indicators are found to be a very useful, economical, simple and accurate for the said titration.

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