5,8-Dichloropyrido[3,2-d]pyridazine
[CAS# 703-33-3]

Identification

• Classification: Pharmaceutical intermediate >> Heterocyclic compound intermediate >> Pyridine compound >> Chloropyridine
• Name: 5,8-Dichloropyrido[3,2-d]pyridazine
• Synonyms: 1,4-Dichloro-5-azaphthalazine; 5,8-Dichloropyrido[2,3-d]pyridazine; 5,8-Dichloropyrido[3,2-d]pyridazine; NSC 131225
• Molecular Formula: C₇H₃Cl₂N₃
• Molecular Weight: 200.02
• CAS Registry Number: 703-33-3
• EC Number: 872-864-4

Properties

• Solubility: Slightly soluble (3.2 g/L) (25 °C), Calc.^*
• Density: 1.573±0.06 g/cm³ (20 °C 760 Torr), Calc.^*
• Melting point: 169 °C^**

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2014 ACD/Labs)

^** Nitta, Yoshihiro

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin irritation	Skin Irrit.	2	H315
Acute toxicity	Acute Tox.	4	H302
Specific target organ toxicity - single exposure	STOT SE	3	H335
Eye irritation	Eye Irrit.	2A	H319