2,6-Dichlorobenzonitrile
Agrochemicals 2025-03-02
2,6-Dichlorobenzonitrile
Chemical Name: 2,6-Dichlorobenzonitrile
Synonyms: 2,6-DCB; DCBN
CAS Number: 1194-65-6
Molecular Formula: C₇H₃Cl₂N
Molecular Weight: 172.01 g/mol
Physical & Chemical Properties
| Property | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Odor | Odorless |
| Melting Point | 142-145°C (288-293°F) |
| Boiling Point | 265-267°C (509-513°F) |
| Density | 1.40 g/cm³ (20°C) |
| Vapor Pressure | 0.001 mmHg (25°C) |
| Solubility | Water: 20 mg/L (20°C); soluble in acetone, methanol |
| Log P<sub>ow</sub> | 2.78 |
Hazard & Safety Information (GHS)
Warning Symbols:
⚠️ Acute Toxicity (Category 4)
⚠️ Environmental Hazard (Category 2)
Hazard Codes:
• H302: Harmful if swallowed
• H315: Causes skin irritation
• H319: Causes serious eye irritation
• H410: Very toxic to aquatic life
Precautionary Measures:
• P273: Avoid release to environment
• P280: Wear gloves/eye protection
• P301+P312: IF SWALLOWED: Call poison center
Chemical Behavior
• Stability:
- Stable under normal conditions
- Hydrolyzes slowly in alkaline solutions
• Reactivity: - Nitrile group participates in nucleophilic additions
- Resistant to oxidation
Applications
✔ Herbicide Intermediate:
- Key precursor for dichlobenil (Casoron®)
✔ Pharmaceuticals: - Building block for bioactive molecules
✔ Material Science: - Monomer for high-performance polymers
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