chlorosulfonic acid [klawr-oh-suhl-fon-ik, klohr-, klawr-, klohr-] Word Origin 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.
Origin of chlorosulfonic acid chloro-2 + sulfonic acid