Hexaconazole

Agrochemicals 2025-03-02

Hexaconazole (CAS No. 79983-71-4) 

1. Basic Information

  • IUPAC Name: (2RS,3RS;2RS,3SR)-2-(2,4-Dichlorophenyl)-1-(1H-1,2,4-triazol-1-yl)hexan-2-ol
  • Molecular Formula: C₁₄H₁₇Cl₂N₃O
  • Molecular Weight: 314.21 g/mol
  • Appearance: White to off-white crystalline powder
  • Odor: Slight characteristic odor

2. Physicochemical Properties

Property Specification
Melting Point 111–113°C
Vapor Pressure 0.018 mPa (25°C)
Solubility – Water: 17 mg/L (20°C)
– Acetone: ~610 g/L
Log Pow 3.9 (octanol/water)
Stability Stable to hydrolysis (pH 5–9)

3. Hazards (GHS Classification)

  • Acute Toxicity:
    • Oral LD₅₀ (rat): 2,189 mg/kg (Category 5)
    • Dermal LD₅₀ (rat): >2,000 mg/kg
  • Environmental:
    • Very toxic to aquatic life (H400)
    • Persistent (soil DT₅₀ = 60–120 days)

4. Storage & Handling

  • Storage: Tight containers, <30°C, away from food/feed
  • PPE: Nitrile gloves, dust mask, goggles

5. Applications

  • Target Pathogens:
    • Powdery mildews
    • Rusts
    • Leaf spot diseases
  • Crops: Coffee, fruits, cereals (typical dose: 50–100 g/ha)

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