Molekula
Chlorosulfonic acid
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Certificate of Analysis with every batch
Chlorosulfonic acid is a highly reactive, corrosive chemical used in organic synthesis, particularly for sulfonation and chlorination reactions. Industrially, it serves as an intermediate in making detergents and surfactants, ion-exchange resins, dyes, pesticides, sulfa drugs and saccharin. It is a strong acid and must be handled with extreme care. CAS: 7790-94-5, Molecular formula: ClSO3H, Molecular weight: 116.52 g/mol, Storage: Ambient. Molekula supplies Chlorosulfonic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
This substance is available from Molekula on enquiry. Full specification, Safety Data Sheet and Certificate of Analysis documentation are provided with your quotation once our team confirms the grade and pack size you need.
Overview
- SKU
- 24581904
- CAS Number
- 7790-94-5
- IUPAC Name
- sulfurochloridic acid
- EC Number
- 232-234-6
- Molecular Formula
- ClSO3H
- Molecular Weight
- 116.52
- Exact Mass
- 115.9335
- SMILES
- OS(=O)(=O)Cl
- InChIKey
- XTHPWXDJESJLNJ-UHFFFAOYSA-N
- InChI
- InChI=1S/ClHO3S/c1-5(2,3)4/h(H,2,3,4)
- PubChem CID
- 24638
Synonyms
- Chloridosulfuric acid
- Chlorosulfuric acid
- Chlorosulphonic acid
- Chlorosulphuric acid
- ClHO3S
- Monochlorosulfuric acid
- sulfochloride
- Sulfonic acid, monochloride
- Sulfuric chlorohydrin
- sulfurochloridic acid
Literature values
Published physical properties of the substance, not batch specifications.
- Appearance
- Colorless or slightly yellow liquid
- Odour
- Pungent
- Melting Point
- -80 °C
- Boiling Point
- 151-152 °C AT 755 mmHg; 74-75 °C AT 19 mmHg; 60-64 °C AT 2-4 mmHg
- Density
- 1.75 (relative, water = 1)
- Vapour Pressure
- 133 Pa at 20 °C
- Refractive Index
- 1.437
Source: PubChem CID 24638 (HSDB, ICSC)
Frequently asked questions
What is chlorosulfonic acid used for?
Chlorosulfonic acid is primarily used in the synthesis of sulfonates, sulfonic acids, and other organic intermediates, particularly in pharmaceuticals and agrochemicals.
What is the chemical formula and molecular weight of chlorosulfonic acid?
The formula is ClSO3H and the molecular weight is 116.52 g/mol.
How should chlorosulfonic acid be stored?
It should be stored at ambient temperature in a tightly sealed, corrosion-resistant container away from moisture and incompatible materials.
What grade of chlorosulfonic acid does Molekula supply?
Molekula supplies chlorosulfonic acid in reagent grade, suitable for laboratory and industrial applications.
Can Molekula supply chlorosulfonic acid in bulk?
Yes, Molekula can supply chlorosulfonic acid in bulk quantities; please contact our sales team for volume pricing and logistics.
What documentation comes with a purchase of chlorosulfonic acid?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS), compliant with GHS and regulatory standards.
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Molekula has supplied fine chemicals and biochemicals since 1999, and its facilities are ISO 9001:2015 and ISO 14001:2015 certified. Every dispatched batch is logged with a batch number and matched to a Certificate of Analysis, and Safety Data Sheets are available in five languages.