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sulfuryl chloride

Product name sulfuryl chloride
Synonyms sulfonyl chloride
sulfuric chloride
GOST no data
CAS 7791-25-5

Sulfuryl chloride is a colorless, clear liquid with a pungent odor. It becomes yellow upon standing. Sulfuril chloride is soluble in chloroform, acetic acid, benzene, carbon tetrachloride; soluble in tenfold volume of water at 20°C. It is slowly hydrolyzes in a cold water and reacts violently with hot water, releasing hydrogen chloride gas. It is explosive also with donor solvents such as alcohols, ethers, DMSO and DMF. Upon standing or when heated above 100°C sulfuryl chloride decomposes to sulfur dioxide and chlorine. It is a good non-ionizing solvent for many organic and inorganic compounds.


Sulfuryl chloride is making by the reaction of sulfur dioxide and chlorine in the presence of activated carbon as a catalyst:

SO2 + Cl2 --> SO2Cl2


  • Sulfuryl chloride is a chlorinating, sulfochlorinating and dehydrating agent in organic synthesis. Chlorination occurs under free radical conditions and accelerates if activating substituents such as carbonyls and sulfoxides are adjacent to chlorinating positions. Sulfuryl chloride chlorinates alkanes, alkenes, alkynes, aromatics, and epoxides.
  • as a catalyst;
  • as a reaction medium;
  • as an intermediate in producing pesticides;
  • to treat wool to prevent shrinking;

  • Manufacturer(s) JSC Khimprom
    Chemical structure of sulfuryl chloride

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