Pyridazine N-oxide
[CAS# 1457-42-7]

Identification

• Classification: Pharmaceutical intermediate >> Heterocyclic compound intermediate >> Pyridazine
• Name: Pyridazine N-oxide
• Molecular Formula: C₄H₄N₂O
• Molecular Weight: 96.09
• CAS Registry Number: 1457-42-7
• EC Number: 622-513-4

Properties

• Melting point: 298-305 ºC

Safety Data

• Hazard Symbols: Xn
• Risk Codes: R22;R37/38;R41
• Safety Description: S26;S39

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin irritation	Skin Irrit.	2	H315
Acute toxicity	Acute Tox.	4	H302
Serious eye damage	Eye Dam.	1	H318
Specific target organ toxicity - single exposure	STOT SE	3	H335