Phenolphthalein

Phenolphthalein

Phenolphthalein is a chemical compound with the formula C20H14O4 and is often written as "HIn" or "phph" in shorthand notation. Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions.

Phenolphthalein's common use is as an indicator in acid-base titrations. It also serves as a component of universal indicator, together with methyl red, bromothymol blue, and thymol blue.

Phenolphthalein
phenolphthalein, (C20H14O4), a natural compound of the phthalein family that is generally
utilized as a corrosive base marker. As a pointer of an answer's pH, phenolphthalein is drab
underneath pH 8.5 and achieves a pink to dark red shade above pH 9.0.
Phenolphthalein is an intense purgative, which acts inside 6– 8 hours; its belongings may last 3–
4 days. Such antagonistic responses as kidney bothering or skin rash may happen.