phenolsulfonic acid

noun
phe·​nol·​sul·​fon·​ic acid
variants: or chiefly British phenolsulphonic acid \ ˌsəl-​ˈfän-​ik, -​ˈfōn-​ How to pronounce phenolsulphonic acid (audio) \

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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