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Use of Mirabilis jalapa flower extract as a natural indicator in acid base titration

Author(s): Mahajan Niranjan Shishir, Jadhav Rahul Laxman ,Pimpodkar Nayana Vinayak , Dias Remeth Jacky and Garge Sandip Bhimrao

Journal: Journal of Pharmacy Research
ISSN 0974-6943

Volume: 1;
Issue: 2;
Start page: 159;
Date: 2008;
Original page

Keywords: Mirabilis jalapa L | Acid base indicator | Natural indicator | Flavonoids.

Mirabilis jalapa L commonly known as four o’clock flower is belonging to family Nyctaginaceae. Thepresent work highlights the use of Mirabilis jalapa L flower extract as an acid base indicator in different types ofacid base titrations. The equivalence points obtained by the flower extract coincide with the equivalence pointsobtained by standard indicators. In case of weak acid and weak base titration, the results obtained by the flowerextract matched with the results obtained by mixed indicator. This natural indicator is found to be a very useful,economical, simple and accurate for the said titration.
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