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N-Fluorobenzenesulfonimide

Also known as: NFSI, N-Fluorodibenzenesulfonimide, N-Fluorobis(phenylsulfonyl)amine, N-Fluorodi(benzenesulfonyl)amine, N-Fluoro-N-(phenylsulfonyl)benzenesulfonamide, Benzenesulfonamide, N-fluoro-N-(phenylsulfonyl)-, Fluorodi(phenylsulfonyl)amine, Accufluor NFSI

N-Fluorobenzenesulfonimide (CAS 133745-75-2) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C12H10FNO4S2 and a molecular weight of 315.341 g/mol. Key properties include a melting point of 114-116 °C, a boiling point of 471.4±28.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 238.9±24.0 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.

CAS No.
133745-75-2
Jingsj CID
J-27674-4
Molecular Formula
C12H10FNO4S2
Molecular Weight
315.341 g/mol
Category
Organic Bases
Last updated
8/21/2026
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Physicochemical Properties

Melting Point114-116 °C
Boiling Point471.4±28.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point238.9±24.0 °C
Exact Mass315.003540
PSA88.28000
LogP2.65
Vapor Pressure0.0±1.2 mmHg at 25°C
Refractive Index1.600

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2935009090
Summary2935009090 other sulphonamides VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:35.0%

Frequently Asked Questions

What is the CAS number of N-Fluorobenzenesulfonimide?

The CAS number of N-Fluorobenzenesulfonimide is 133745-75-2.

What are the molecular formula and molecular weight of N-Fluorobenzenesulfonimide?

N-Fluorobenzenesulfonimide has molecular formula C12H10FNO4S2 and molecular weight 315.341 g/mol.

Which suppliers offer N-Fluorobenzenesulfonimide?

1 supplier(s) listed; request a quote for pricing.

Is N-Fluorobenzenesulfonimide hazardous?

N-Fluorobenzenesulfonimide has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of N-Fluorobenzenesulfonimide?

For N-Fluorobenzenesulfonimide, Upstream Products: Dibenzenesulfonimide; Downstream Products: 3-Fluoro-2-thiophenecarboxylic acid, N-fluorobenzenesulfonamide, Benzenesulfonic 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. "N-Fluorobenzenesulfonimide (CAS 133745-75-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27674-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.