Agrochemicals

Quinclorac (CAS No. 84087-01-4) 

1. Basic Information

• IUPAC Name: 3,7-Dichloroquinoline-8-carboxylic acid
• Synonyms:
  • Facet® (BASF trade name)
  • Quinclorac-dimethylammonium (common salt form)
• CAS Number: 84087-01-4
• Molecular Formula: C₁₀H₅Cl₂NO₂
• Molecular Weight: 242.06 g/mol
• Appearance: White to light tan crystalline powder
• Odor: Odorless

2. Physical and Chemical Properties

3. Chemical Structure

      Cl  
       |  
  ◯-COOH  
   |   |  
  N   Cl

(◯ = quinoline ring system)

4. Hazards (GHS Classification)

• Acute Toxicity:
  • Oral LD₅₀ (rat): 2,690 mg/kg (Category 5)
  • Dermal LD₅₀ (rabbit): >2,000 mg/kg
• Environmental:
  • Toxic to aquatic plants (H411)
  • Not classified for bees (LD₅₀ >100 μg/bee)
• Carcinogenicity: Not classified

5. Storage and Handling

• Storage:
  • Keep in original containers at <30°C
  • Protect from moisture
• Handling:
  • Use gloves (nitrile) and dust mask
  • Avoid spray drift during application

6. Applications

• Herbicide:
  • Selective control of barnyardgrass in rice fields
  • Used in turf management (golf courses)
• Mode of Action: Auxin mimic (synthetic auxin herbicide)

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