2,6-Dichloroquinoxaline

2,6-Dichloroquinoxaline (CAS No. 2213-63-0) 

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1. Basic Information

IUPAC Name: 2,6-DichloroquinoxalineSynonyms:DCQ2,6-Dichloro-1,4-diazanaphthaleneCAS Number: 2213-63-0Molecular Formula: C₈H₄Cl₂N₂Molecular Weight: 199.04 g/molAppearance: Off-white to pale yellow crystalline powderOdor: Slight aromatic odor

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2. Physical and Chemical Properties

Property	Value
Melting Point	155–158°C (311–316°F)
Boiling Point	Sublimes at >200°C
Solubility	– Water: Insoluble
	– Organic solvents: Soluble in DMF, DMSO, hot ethanol
Log Pow	2.8 (octanol/water)
Vapor Pressure	0.12 mPa at 25°C

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3. Chemical Structure

      Cl         |       ◯-N      /   \     C     C      \   /       N-◯         |        Cl

(◯ = benzene ring positions)

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4. Hazards (GHS Classification)

Acute Toxicity:Harmful if swallowed (H302)Causes skin irritation (H315)Environmental:Toxic to aquatic life (H411)NFPA Rating: Health 2, Flammability 1, Reactivity 0

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5. Storage and Handling

Storage:Keep in tightly sealed amber containersStore in cool, dry conditions (<25°C)Handling:Use nitrile gloves and fume hoodAvoid dust generation

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6. Applications

Pharmaceutical Intermediate:Synthesis of antimalarial and antiviral compoundsAgrochemicals:Precursor for fungicides (e.g., quinoxyfen)Material Science:Building block for conductive polymers

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