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benzenesulfonic acid

American  
[ben-zeen-suhl-fon-ik, ben-zeen-] / ˈbɛn zin sʌlˈfɒn ɪk, bɛnˈzin- /

noun

Chemistry.
  1. a fine, needlelike substance, C 6 H 6 SO 3 , used chiefly as a catalyst and in the synthesis of phenol, resorcinol, and other organic products.


Etymology

Origin of benzenesulfonic acid

benzene + sulfonic acid

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