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phenolsulfonic acid

noun phe·nol·sul·fon·ic acid

variants: or chiefly British

phenolsulphonic acid

\ˌsəl-ˈfän-ik, -ˈfōn-\play

Medical Definition of phenolsulfonic acid

: a sulfonic acid derived from phenol; especially : a crystalline acid C₆H₆O₄S used chiefly as an intermediate for dyes and pharmaceuticals

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