Sulfonephthalein

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
Any of many sulfonic acids derived from phthaleins, some of which are important acid-base indicators.

Etymology

From sulfone + phthalein.

Related phrases

acid base indicator bromocresol purple chlorophenol red phenol red sulfonic acid thymol blue

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