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Brompyrazon

Also known as: Bromopyrazone, 5-amino-4-bromo-2-phenylpyridazin-3-one, 5-amino-4-bromo-2-phenyl-2H-pyridazin-3-one, 5-amino-4-bromo-2-phenyl-3(2H)-pyridazinone, BAS 2430, BAS 2430 H, Caswell No. 033C, EINECS 221-248-8, 1-phenyl-4-amino-5-bromo-pyridaz-6-one, 2-Phenyl-4-brom-5-amino-3(2H)-pyridazinon

Brompyrazon (CAS 3042-84-0) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C10H8BrN3O and a molecular weight of 266.09400 g/mol. Key properties include a melting point of 220-221℃, a boiling point of 325.4ºC at 760mmHg, a density of 1.67g/cm3 and a flash point of 150.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3042-84-0
Jingsj CID
J-8599-1
Molecular Formula
C10H8BrN3O
Molecular Weight
266.09400 g/mol
Category
Organohalogen Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point220-221℃
Boiling Point325.4ºC at 760mmHg
Density1.67g/cm3
Flash Point150.6ºC
Exact Mass264.98500
PSA60.91000
LogP2.15840
Refractive Index1.693

Customs & Trade Information

HS Code2933990018
Summary2933990018 5-amino-4-bromo-2-phenylpyridazin-3(2h)-one。supervision conditions:s(import or export registration certificate for pesticides)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.5%。general tariff:20.0%

Frequently Asked Questions

What is the CAS number of Brompyrazon?

The CAS number of Brompyrazon is 3042-84-0.

What are the molecular formula and molecular weight of Brompyrazon?

Brompyrazon has molecular formula C10H8BrN3O and molecular weight 266.09400 g/mol.

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

Last updated:

How to cite: Jingsj. "Brompyrazon (CAS 3042-84-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8599-1 (accessed 2026-11-07).

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