3,4-Dibromo-1H-pyrrole-2,5-dione

Also known as: 2,3-Dibromomaleimide, 2,3-Dibromomaleinimide, 3,4-Dibromopyrrole-2,5-dione, Dibromomaleinimide, 1H-Pyrrole-2,5-dione, 3,4-dibromo-

3,4-Dibromo-1H-pyrrole-2,5-dione (CAS 1122-10-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C4HBr2NO2 and a molecular weight of 254.86400 g/mol. Key properties include a melting point of 228-231ºC, a boiling point of 275.3ºC at 760 mmHg, a density of 2.661 g/cm3 and a flash point of 120.3ºC. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage and H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1122-10-7
Jingsj CID: J-17329-5
Molecular Formula: C₄HBr₂NO₂
Molecular Weight: 254.86400 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	228-231ºC
Boiling Point	275.3ºC at 760 mmHg
Density	2.661 g/cm3
Flash Point	120.3ºC
Exact Mass	252.83700
PSA	46.17000
LogP	0.97300
Vapor Pressure	0.00514mmHg at 25°C
Refractive Index	1.705

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger

H314 — Causes severe skin burns and eye damage
H317 — May cause an allergic skin reaction

Customs & Trade Information

HS Code	2925190090
Summary	2925190090 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 3,4-Dibromo-1H-pyrrole-2,5-dione?

The CAS number of 3,4-Dibromo-1H-pyrrole-2,5-dione is 1122-10-7.

What are the molecular formula and molecular weight of 3,4-Dibromo-1H-pyrrole-2,5-dione?

3,4-Dibromo-1H-pyrrole-2,5-dione has molecular formula C4HBr2NO2 and molecular weight 254.86400 g/mol.

Is 3,4-Dibromo-1H-pyrrole-2,5-dione hazardous?

3,4-Dibromo-1H-pyrrole-2,5-dione has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage; H317 — May cause an allergic skin reaction.

What are the upstream and downstream products of 3,4-Dibromo-1H-pyrrole-2,5-dione?

For 3,4-Dibromo-1H-pyrrole-2,5-dione, Upstream Products: Maleimide, Succinimide, 3,4-Dibromofuran-2,5-dione; Downstream Products: 2,3-Dibromo-N-methylmaleimide, Dibromomaleic acid, Ammonia.

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

Last updated: 8/21/2026

How to cite: Jingsj. "3,4-Dibromo-1H-pyrrole-2,5-dione (CAS 1122-10-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17329-5 (accessed 2026-11-09).

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