4,5-Dichloro-2-(hydroxymethyl)pyridazin-3(2H)-one

4,5-二氯-2-(羟甲基)哒嗪-3(2H)-酮

Also known as: 4,5-Dichloro-2-(hydroxymethyl)-3(2H)-pyridazinone, 2-(Hydroxymethyl)-4,5-dichloro-3(2H)-pyridazinone, 1-Hydroxymethyl-4,5-dichloropyridazin-6-one, 4,5-Dichloro-2-(hydroxymethyl)pyridazin-3-one

CAS No.: 51355-97-6
Jingsj CID: J-1013511-2
Molecular Formula: C₅H₄Cl₂N₂O₂
Chinese Name: 4,5-二氯-2-(羟甲基)哒嗪-3(2H)-酮
Molecular Weight: 195.00300 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	97ºC
Boiling Point	261.9ºC at 760 mmHg
Density	1.72g/cm3
Flash Point	112.2ºC

Frequently Asked Questions

What is the CAS number of 4,5-Dichloro-2-(hydroxymethyl)pyridazin-3(2H)-one?

51355-97-6

What are the molecular formula and molecular weight of 4,5-Dichloro-2-(hydroxymethyl)pyridazin-3(2H)-one?

C5H4Cl2N2O2, molecular weight 195.00300 g/mol

Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026