3,4-Dichlorobenzenesulfonyl chloride
3,4-二氯苯磺酰氯
Also known as: 3,4-Dichlorobenzene-1-sulfonyl chloride, 3,4-Dichlorophenylsulfonyl chloride, Benzenesulfonyl chloride, 3,4-dichloro-, NSC 2651
3,4-Dichlorobenzenesulfonyl chloride (CAS 98-31-7) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C6H3Cl3O2S and a molecular weight of 245.511 g/mol. It is also known as 3,4-Dichlorobenzene-1-sulfonyl chloride, 3,4-Dichlorophenylsulfonyl chloride and Benzenesulfonyl chloride, 3,4-dichloro-. Key properties include a melting point of 20-22°C, a boiling point of 315.0±27.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 144.3±23.7 °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.
- 98-31-7
- Jingsj CID
- J-45905-3
- Molecular Formula
- C6H3Cl3O2S
- Chinese Name
- 3,4-二氯苯磺酰氯
- Molecular Weight
- 245.511 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 20-22°C |
|---|---|
| Boiling Point | 315.0±27.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 144.3±23.7 °C |
| Exact Mass | 243.891937 |
| PSA | 42.52000 |
| LogP | 3.68 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.582 |
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 3,4-Dichlorobenzenesulfonyl chloride?
The CAS number of 3,4-Dichlorobenzenesulfonyl chloride is 98-31-7.
What are the molecular formula and molecular weight of 3,4-Dichlorobenzenesulfonyl chloride?
3,4-Dichlorobenzenesulfonyl chloride has molecular formula C6H3Cl3O2S and molecular weight 245.511 g/mol.
Is 3,4-Dichlorobenzenesulfonyl chloride hazardous?
3,4-Dichlorobenzenesulfonyl 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 3,4-Dichlorobenzenesulfonyl chloride?
For 3,4-Dichlorobenzenesulfonyl chloride, Upstream Products: 1,2-Dichlorobenzene, Chlorosulfonic acid; Downstream Products: 3,3',4,4'-Tetrachlorobiphenyl, 3,3',4,4'-Tetrachlorodiphenyl sulfone, 3,4-Dichlorobenzenethiol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,4-Dichlorobenzenesulfonyl chloride (CAS 98-31-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45905-3 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.