What is Phenolphthalein?


  • Phenolphthalein is a colourless crystalline solid (pink in alkaline solution) used as an acid-base indicator and medicinally as a laxative.

  • Acids do not give colour with phenolphthalein indicator.

  • Bases give Pink colour with Phenolphthalein indicator.

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Updated on: 10-Oct-2022

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