phenolphthalein

Phenolphthalein is a chemical compound commonly used as a pH indicator in laboratories. It changes color depending on the acidity or basicity of a solution. In acidic environments, phenolphthalein is colorless, while in neutral to alkaline conditions, it turns pink. This property makes it extremely useful in titrations, where it helps determine the pH of a solution. Beyond its scientific applications, phenolphthalein is also found in some over-the-counter laxatives, although its use in medicines has decreased due to safety concerns. Overall, it plays an important role in both chemistry and healthcare.