Chlorosulfonic acid
SIAL/571024 - 99%
Synonym: Sulfuric chlorohydrin
CAS Number: 7790-94-5
Empirical Formula (Hill Notation): HClO3S
Molecular Weight: 116.52
EC Number: 232-234-6
MDL Number: MFCD00011523
Linear Formula: ClSO3H
Product Type: Chemical
4×100 Pull-top Can
Photo is meant to be representative of product you will receive if ordered. Additional information is printed on actual labels and package types are subject to change.
Photo is meant to be representative of product you will receive if ordered. Additional information is printed on actual labels and package types are subject to change.
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 571024-100G.
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 571024-1KG.
| assay | 99% |
| bp | 151-152 °C/755 mmHg (lit.) |
| density | 1.753 g/mL at 25 °C (lit.) |
| expl. lim. | 37.7 % |
| InChI | 1S/ClHO3S/c1-5(2,3)4/h(H, |
| InChI key | XTHPWXDJESJLNJ-UHFFFAOYSA |
| pH | < 1 (at 20 °C) |
| Quality Level | 200  |
| refractive index | n |
| SMILES string | OS(Cl)(=O)=O |
| solubility | acetic acid: soluble(lit.) |
| chloroform: soluble(lit.) | |
| dichloromethane: soluble(lit.) | |
| vapor density | 4 (vs air) |
| vapor pressure | 1 mmHg ( 25 °C) |
| 3.3 mmHg ( 37.7 °C) |
| 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. |
| General description: | 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. |
| Packaging: | 1 kg in glass bottle |
| Packaging: | 18 L in Kilo-Lab™ |
| Packaging: | 5, 100, 4×100 g in glass bottle |
| Packaging: | View returnable container options . |
| Symbol |   GHS05,GHS06 |
| Signal word | Danger |
| Hazard statements | H314 - H330 - H335 |
| Precautionary statements | P260 - P271 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 |
| Hazard Codes | C |
| Risk Statements | 14-35-37 |
| Safety Statements | 26-45 |
| RIDADR | UN 1754 8 / PGI |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Supplemental Hazard Statements | EUH014 |
| Purity | 99% |
| bp | 151-152 °C/755 mmHg (lit.) |
| Density | 1.753 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 12352100 |