Chlorosulfonic Acid

chlorosulfonic acid

[¦klȯr·ō·səl′fän·ik ′as·əd]
(inorganic chemistry)
ClSO2OH A fuming liquid that decomposes in water to sulfuric acid and hydrochloric acid; used in pharmaceuticals, pesticides, and dyes, and as a chemical intermediate.

Chlorosulfonic Acid

 

SO2Cl(OH), a monochloroanhydride of sulfuric acid. A colorless, mobile liquid, chlorosulfonic acid has a melting point of – 80°C, a boiling point at atmospheric pressure of 155°C (with decomposition), and a density of 1.75 g/cm3. It is chemically very reactive. It reacts vigorously with water, forming sulfuric and hydrochloric acids, and it fumes in the presence of atmospheric moisture. It also reacts with many organic and inorganic compounds. Chlorosulfonic acid is produced by the reaction of hydrogen chloride with sulfur trioxide: HCl + SO3 = SO2Cl(OH). In the absence of moisture, it can be stored and transported in steel containers. Chlorosulfonic acid is used in the production of dyes, detergents, and drugs; it is also used as a smoke producer.

L. M. IAKIMENKO

References in periodicals archive ?
One proposal suggested injecting chlorosulfonic acid, a highly corrosive and toxic substance, into the engine exhaust.
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The next big breakthrough came in 2009, when Talmon, Pasquali and colleagues discovered the first true solvent for nanotubes -- chlorosulfonic acid.
The researchers have reported that chlorosulfonic acid can dissolve half-millimeter-long nanotubes in solution, a critical step in spinning fibres from ultralong nanotubes.
Synthesis of the sulfuric acid monoester from epoxidized methyl ester is accomplished by the reaction of epoxidized methyl esters with chlorosulfonic acid in pyridine solution.
It had been hoped to use chlorosulfonic acid for item (f), and sulfur dichloride or monochloride for (g).
The emergency exercise simulated a rail tank car derailment causing the "spill" of chlorosulfonic acid, a raw material used in Rhodia's Baltimore plant.
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The researchers took advantage of novel cryogenic techniques for electron microscopy that allowed them to directly image the graphene sheets in the chlorosulfonic acid.
Pasquali, primary author Nicholas Parra-Vasquez and their colleagues reported this month in the online journal ACS Nano that chlorosulfonic acid can dissolve half-millimeter-long nanotubes in solution, a critical step in spinning fibers from ultralong nanotubes.
3]and its complexes, such as acyl and alkyl sulfates and chlorosulfonic acid, are commonly used as sulfonating agents.