5-Chloro-2-fluorobenzenesulfonyl chloride

5-氯-2-氟苯磺酰氯

Also known as: 5-Chloro-2-fluorobenzene-1-sulfonyl chloride, 5-Chloro-2-fluorobenzenesulphonyl chloride, 5-chloro-2-fluorophenylsulfonyl chloride, Benzenesulfonyl chloride, 5-chloro-2-fluoro-

5-Chloro-2-fluorobenzenesulfonyl chloride (CAS 351003-49-1) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C6H3Cl2FO2S and a molecular weight of 229.056 g/mol. It is also known as 5-Chloro-2-fluorobenzene-1-sulfonyl chloride, 5-Chloro-2-fluorobenzenesulphonyl chloride and 5-chloro-2-fluorophenylsulfonyl chloride. Key properties include a melting point of 41-44 °C(lit.), a boiling point of 283.6±25.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 125.3±23.2 °C. It is classified under GHS with signal word Danger and hazard statements 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.
351003-49-1
Jingsj CID
J-31418-7
Molecular Formula
C6H3Cl2FO2S
Chinese Name
5-氯-2-氟苯磺酰氯
Molecular Weight
229.056 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point41-44 °C(lit.)
Boiling Point283.6±25.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point125.3±23.2 °C
Exact Mass227.921478
PSA42.52000
LogP2.71
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.550

GHS Safety & Compliance

CorrosionSignal word: Danger
  • H314 — Causes severe skin burns and eye damage

Customs & Trade Information

HS Code2904909090
SummaryHS: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 5-Chloro-2-fluorobenzenesulfonyl chloride?

The CAS number of 5-Chloro-2-fluorobenzenesulfonyl chloride is 351003-49-1.

What are the molecular formula and molecular weight of 5-Chloro-2-fluorobenzenesulfonyl chloride?

5-Chloro-2-fluorobenzenesulfonyl chloride has molecular formula C6H3Cl2FO2S and molecular weight 229.056 g/mol.

Is 5-Chloro-2-fluorobenzenesulfonyl chloride hazardous?

5-Chloro-2-fluorobenzenesulfonyl chloride has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "5-Chloro-2-fluorobenzenesulfonyl chloride (CAS 351003-49-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31418-7 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.