Chlorosulfonic acid, 1 X 100 g (571024-100G)

Chlorosulfonic acid is a strong acid that is synthesized on an industrial scale by reacting sulfur trioxide and dry hydrogen chloride gas in an equimolar ratio. It can act as a sulfonating, dehydrating, oxidizing and chlorinating agent. It is reported to be a better electrophilic olefin cyclization agent in comparison to other sulfonic acids. Its infrared spectra in the solid, liquid and gaseous state have been recorded in the region 4000-400cm⁻¹. Chlorosulfonic acid may be used in the following processes: •Synthesis of di-n-butyl ammonium chlorosulfonate, a secondary amine ionic liquid. •To prepare sulfonated polyethersulfone (SPES) with enhanced hydrophilic property. •To attach sulfate group to silk fibroin for improving its anticoagulant ability. •As a catalyst to prepare substituted coumarin, via von Pechmann condensation between phenol and β-ketoester. •As a substitute to acid catalyst in Biginelli reaction to prepare 3,4dihydropyrimidines.

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