6-Phenyl-3(2H)-pyridazinone

6-苯基-3(2H)-哒嗪酮

Also known as: 6-Phenylpyridazin-3(2H)-one, 3-Hydroxy-6-phenylpyridazine, 6-Phenyl-2,3-dihydropyridazin-3-one, 3(2H)-Pyridazinone, 6-phenyl-, 6-Phenylpyridazin-3-ol, 3-Phenyl-1H-pyridazin-6-one, NSC 13399

6-Phenyl-3(2H)-pyridazinone (CAS 2166-31-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H8N2O and a molecular weight of 172.183 g/mol. It is also known as 6-Phenylpyridazin-3(2H)-one, 3-Hydroxy-6-phenylpyridazine and 6-Phenyl-2,3-dihydropyridazin-3-one. Key properties include a melting point of 201-204ºC(lit.), a boiling point of 403.8ºC at 760mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 198ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2166-31-6
Jingsj CID
J-37674-7
Molecular Formula
C10H8N2O
Chinese Name
6-苯基-3(2H)-哒嗪酮
Molecular Weight
172.183 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point201-204ºC(lit.)
Boiling Point403.8ºC at 760mmHg
Density1.2±0.1 g/cm3
Flash Point198ºC

Frequently Asked Questions

What is the CAS number of 6-Phenyl-3(2H)-pyridazinone?

The CAS number of 6-Phenyl-3(2H)-pyridazinone is 2166-31-6.

What are the molecular formula and molecular weight of 6-Phenyl-3(2H)-pyridazinone?

6-Phenyl-3(2H)-pyridazinone has molecular formula C10H8N2O and molecular weight 172.183 g/mol.

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

Last updated:

How to cite: Jingsj. "6-Phenyl-3(2H)-pyridazinone (CAS 2166-31-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-37674-7 (accessed 2026-10-22).

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