571024

Chlorosulfonic acid

99%

• Synonyme(s) : Sulfuric chlorohydrin
• Formule linéaire : ClSO₃H
• Numéro CAS: 7790-94-5
• Poids moléculaire : 116.52
• Numéro CE : 232-234-6
• Numéro MDL: MFCD00011523
• Code UNSPSC : 12352100
• ID de substance PubChem : 24880605
• Nomenclature NACRES : NA.21

Propriétés

• Densité de vapeur: 4 (vs air)
• Niveau de qualité: 200
• Pression de vapeur: 1 mmHg ( 25 °C); 3.3 mmHg ( 37.7 °C)
• Pureté: 99%
• Limite d'explosivité: 37.7 %
• Indice de réfraction: n20/D 1.433 (lit.)
• Point d'ébullition: 151-152 °C/755 mmHg (lit.)
• Solubilité: acetic acid: soluble(lit.); chloroform: soluble(lit.); dichloromethane: soluble(lit.)
• Densité: 1.753 g/mL at 25 °C (lit.)
• Chaîne SMILES: OS(Cl)(=O)=O
• InChI: 1S/ClHO3S/c1-5(2,3)4/h(H,2,3,4)
• Clé InChI: XTHPWXDJESJLNJ-UHFFFAOYSA-N

Description

Description générale

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.

Application

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.

Conditionnement

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Informations sur la sécurité

• Pictogrammes: GHS06,GHS05
• Mention d'avertissement: Danger
• Mentions de danger: H314,H330,H335
• Conseils de prudence: P260 - P271 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Classification des risques: Acute Tox. 1 Inhalation - Eye Dam. 1 - Skin Corr. 1A - STOT SE 3
• Organes cibles: Respiratory system
• Risques supp: EUH014
• Code de la classe de stockage: 6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter