Agrochemicals

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

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1. Basic Information

• IUPAC Name: Benzene-1,3-dicarbonitrile
• Synonyms:
  • Isophthalonitrile
  • m-Dicyanobenzene
• CAS Number: 626-17-5
• Molecular Formula: C₈H₄N₂
• Molecular Weight: 128.13 g/mol
• Appearance: White to off-white crystalline powder
• Odor: 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 containers
  • Store in a cool, dry, well-ventilated area
• Handling:
  • Use nitrile gloves, safety goggles, and a fume hood
  • Avoid dust formation

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5. Applications

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

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