Phenolphthalein

//ˌfiː.nɒlˈ(f)θa.liːn//

"Phenolphthalein" in a Sentence (2 examples)

Phenolphthalein will turn fuchsia in the presence of a base with a pH of or above 10.0 and will remain colorless in the presence of a solution with a pH of or below 8.2.

Phenolphthalein is an indicator used in acid-base titrations.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.