2-Chlorobenzenesulfonyl chloride
Also known as: 2-Chlorophenylsulfonyl Chloride, o-Chlorobenzenesulfonyl chloride, Benzenesulfonyl chloride, 2-chloro-, Benzenesulfonyl chloride, o-chloro-, 2-chloro-benzenesulfonylchlorid, BUTTPARK 37\11-76, NSC 151229, 2-CHLOROBENZENE-1-SULFONYL CHLORIDE, o-chlorobenzenesulfochloride
2-Chlorobenzenesulfonyl chloride (CAS 2905-23-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C6H4Cl2O2S and a molecular weight of 211.066 g/mol. Key properties include a melting point of 28ºC, a boiling point of 290.8±23.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 129.7±22.6 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2905-23-9
- Jingsj CID
- J-22027-9
- Molecular Formula
- C6H4Cl2O2S
- Molecular Weight
- 211.066 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 28ºC |
|---|---|
| Boiling Point | 290.8±23.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 129.7±22.6 °C |
| Exact Mass | 209.930908 |
| PSA | 42.52000 |
| LogP | 2.34 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.569 |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2904909090 |
|---|---|
| Summary | HS:2904909090 sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2-Chlorobenzenesulfonyl chloride?
The CAS number of 2-Chlorobenzenesulfonyl chloride is 2905-23-9.
What are the molecular formula and molecular weight of 2-Chlorobenzenesulfonyl chloride?
2-Chlorobenzenesulfonyl chloride has molecular formula C6H4Cl2O2S and molecular weight 211.066 g/mol.
Is 2-Chlorobenzenesulfonyl chloride hazardous?
2-Chlorobenzenesulfonyl chloride has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of 2-Chlorobenzenesulfonyl chloride?
For 2-Chlorobenzenesulfonyl chloride, Upstream Products: 2-Chlorophenylboronic acid, 2-Chloroaniline, 2-chlorobenzenediazonium; Downstream Products: bis(2-chlorophenyl) disulfide, 2-Chlorophenyl isocyanate, 2-Chlorobenzenesulfonic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Chlorobenzenesulfonyl chloride (CAS 2905-23-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-22027-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.