1,3-Dicyanobenzene

1,3-Dicyanobenzene (CAS No. 626-17-5) 

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1. Basic Information

IUPAC Name: Benzene-1,3-dicarbonitrileSynonyms:Isophthalonitrilem-DicyanobenzeneCAS Number: 626-17-5Molecular Formula: C₈H₄N₂Molecular Weight: 128.13 g/molAppearance: White to off-white crystalline powderOdor: Odorless

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2. Physical and Chemical Properties

Property	Value
Melting Point	159–161°C (318–322°F)
Boiling Point	Sublimes at >200°C
Density	1.24 g/cm³ (20°C)
Solubility	– Water: Insoluble
	– Organic solvents: Soluble in DMF, acetone, hot ethanol
Vapor Pressure	<0.1 mmHg at 25°C
Flash Point	>150°C (302°F) (closed cup)

 

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3. Hazards (GHS Classification)

Acute Toxicity:Harmful if swallowed (H302)Causes skin irritation (H315)Causes serious eye irritation (H319)Environmental: Toxic to aquatic life (H411)NFPA Rating: Health 2, Flammability 1, Reactivity 0

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4. Storage and Handling

Storage:Keep in tightly sealed containersStore in a cool, dry, well-ventilated areaHandling:Use nitrile gloves, safety goggles, and a fume hoodAvoid dust formation

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5. Applications

Polymer Industry:Monomer for high-performance polymers (e.g., polyimides, polyamides)Electronics:Precursor for organic semiconductorsOrganic Synthesis:Building block for pharmaceuticals and agrochemicals

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