Quinclorac
Agrochemicals 2025-03-02
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
| Property | Value |
|---|---|
| Melting Point | 274°C (dec.) |
| Vapor Pressure | <0.01 mPa (25°C) |
| Solubility (25°C) | – Water: 62 mg/L (pH 7) |
| – Acetone: 300 mg/L | |
| Log Pow | 2.34 (octanol/water) |
| pH (1% solution) | 3.8 (weakly acidic) |
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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