phenolsulfonephthalein

noun

variants: or phenolsulfonphthalein \ ¦⸗ˌ⸗¦⸗ˌ⸗¦⸗(⸗)⸗ \

Definition of phenolsulfonephthalein

: a red crystalline compound C₁₉H₁₄O₅S formed by condensation of the anhydride of ortho-sulfobenzoic acid and phenol and used chiefly as a test of kidney function and as an acid-base indicator

— called also phenol red

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“Phenolsulfonephthalein.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phenolsulfonephthalein. Accessed 14 Apr. 2021.

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