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.

Jan 19, 2022 · Learn about phenolphthalein indicator, including its structure, how to make it, and what colors it turns at various pH values.

Phenolphthalein, (C20H14O4), an organic compound of the phthalein family that is widely employed as an acid-base indicator. As an indicator of a solution’s pH, phenolphthalein is colourless below pH 8.5 …

Phenolphthalein | C20H14O4 | CID 4764 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier …

Dec 24, 2018 · The origins of phenolphthalein lie in the German chemical industry during the heyday of artificial dye discovery in the late 19th century.

Jul 23, 2025 · Phenolphthalein (C20H14O4) is an organic chemical compound often used as an indicator in acid-base titrations. It is slightly soluble in water and usually is dissolved in alcohol in …

Phenolphthalein is defined as a yellowish powder that is soluble in alcohol and alkaline solutions, but only slightly soluble in water, exhibiting a colorless form in acidic solutions and red or pink in alkaline …

Apr 17, 2025 · Learn all about phenolphthalein, its structure, colour change, uses in acid-base reactions, formula, pronunciation, and role as a powerful chemical indicator.

Learn about phenolphthalein in chemistry—its formula, color change, pH range, uses in titration, and lab safety tips. Clear, exam-focused guide for students.

Aug 28, 2025 · Phenolphthalein is an organic compound known for its ability to visibly change color depending on the acidity or alkalinity of a solution. First synthesized in 1871 by German chemist …