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N-Bromosuccinimide

Also known as: NBS, 1-bromo-2,5-pyrrolidinedione, 2,5-pyrrolidinedione, 1-bromo-, bromosuccinimide, succinbromimide

N-Bromosuccinimide (CAS 128-08-5) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C4H4BrNO2 and a molecular weight of 177.984 g/mol. Key properties include a melting point of 175-180 °C (dec.)(lit.), a boiling point of 221.4±23.0 °C at 760 mmHg, a density of 2.0±0.1 g/cm3 and a flash point of 87.7±22.6 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed 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.
128-08-5
Jingsj CID
J-1135091-0
Molecular Formula
C4H4BrNO2
Molecular Weight
177.984 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Melting Point175-180 °C (dec.)(lit.)
Boiling Point221.4±23.0 °C at 760 mmHg
Density2.0±0.1 g/cm3
Flash Point87.7±22.6 °C
Exact Mass176.942535
PSA37.38000
LogP-0.70
Vapor Pressure0.1±0.4 mmHg at 25°C
Refractive Index1.606

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger
  • H302 — Harmful if swallowed
  • H314 — Causes severe skin burns and eye damage

Customs & Trade Information

HS Code2925190090
Summary2925190090 other imides and their derivatives; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of N-Bromosuccinimide?

The CAS number of N-Bromosuccinimide is 128-08-5.

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

N-Bromosuccinimide has molecular formula C4H4BrNO2 and molecular weight 177.984 g/mol.

Is N-Bromosuccinimide hazardous?

N-Bromosuccinimide has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H314 — Causes severe skin burns and eye damage.

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

For N-Bromosuccinimide, Upstream Products: Succinimide, N-Chlorosuccinimide, N-Bromoacetamide; Downstream Products: 7-Bromobenz[a]anthracene, 4'-Bromo-3'-fluoroacetanilide, 3,4-Dihydroisoquinoline.

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-Bromosuccinimide (CAS 128-08-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1135091-0 (accessed 2026-11-06).

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