Definition of methane sulphonic acid in English:

methane sulphonic acid

(also methane sulfonic acid)

noun

Chemistry
  • A corrosive substance, CH₃SO₂OH, which melts at around room temperature (&c.20°C) and is used as a catalyst in esterification, alkylation, and polymerization reactions.

Origin

Late 19th century; earliest use found in Henry Forster Morley (b. 1855).