ClHO3S
116.53 g/mol
Industrial ChemicalDanger
CHLOROSULFONIC ACID
CAS7790-94-5EC232-234-6
Category
Industrial Chemical
Compound Class
Other
Primary Use
Sulfonation and chlorosulfonation agent
Chlorosulfonic acid is a distillable, colorless liquid that is hygroscopic and a powerful lachrymator. It is widely used as a sulfonation and chlorosulfonation agent in industrial chemical processes.
Sulfonation agentChlorosulfonation agent
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
Lithium perchlorate
CAS7791-03-9
solid rocket propellant and oxidizing agent
ReferenceSame Category
Cobaltous chloride hexahydrate
CAS7791-13-1
cobalt source for industrial applications
ReferenceSame Category
Magnesium chloride hexahydrate
CAS7791-18-6
Industrial chemical and deicing agent
ReferenceSame Category
Sulfuryl chloride
CAS7791-25-5
Chlorinating and sulfonating agent in organic synthesis
Safety Reference
Danger
H314Causes severe skin burns and eye damage
H335May cause respiratory irritation
H312Harmful in contact with skin
H318Causes serious eye damage
H330Fatal if inhaled
H372Causes damage to organs through prolonged or repeated exposure
H300Fatal if swallowed
H370Causes damage to organs
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H290May be corrosive to metals
H371May cause damage to organs
H373May cause damage to organs through prolonged or repeated exposure
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for CHLOROSULFONIC ACID (CAS 7790-94-5) is 2806.20.
HS code (international, 6-digit)
2806.20
EU CN code (8-digit)
2806 20 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
sulfurochloridic acid
InChIKey
XTHPWXDJESJLNJ-UHFFFAOYSA-N
SMILES
OS(=O)(=O)Cl
Synonyms (22)
- CHLOROSULFONIC ACID
- Chiorosulfonic acid
- Chloridosulfuric acid
- Chlorosulfonic acid, CP
- Chlorosulfuric acid
- Chlorosulphonic acid
- Chlorosulphuric acid
- Monochlorosulfuric acid
- Sulfonic acid, monochloride
- Sulfuric chlorohydrin
- chloranesulfonic acid
- chlorosufonic acid
- chlorsulphonic acid
- chorosulfonic acid
- sulfochloride
- sulfuric acid chlorohydrin
- sulfurochloridic acid
- sulfurochloridoic acid
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