chlorosulfonic acid

[ klawr-oh-suhl-fon-ik, klohr-, klawr-, klohr- ]
/ ˈklɔr oʊ sʌlˈfɒn ɪk, ˈkloʊr-, ˌklɔr-, ˌkloʊr- /

noun

a colorless or yellowish, highly corrosive, pungent liquid, HClO3S, usually produced by treating sulfur trioxide with hydrogen chloride: used in organic synthesis to introduce the sulfonyl chloride group, =SO2Cl.

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020