Fenpyroximate Technical
Fenpyroximate Technical: Premium Acaricide for Effective Pest Control
Fenpyroximate Technical is a highly effective acaricide belonging to the pyrazole group of pesticides. This technical grade formulation offers superior performance against various mite species while maintaining environmental safety.
Key Specifications:
- Chemical Name: tert-Butyl (E)-α-(1,3-dimethyl-5-phenoxypyrazol-4-ylmethylaminooxy)-p-toluate
- CAS No.: 134098-61-6
- Molecular Formula: C24H27N3O4
- Appearance: White to pale yellow crystalline powder
- Purity: ≥95%
- Melting Point: 101-102°C
- Solubility:
- Water: 0.015 mg/L (20°C)
- Acetone: >500 g/L
- Methanol: 50-100 g/L
Performance Characteristics:
| Feature | Description |
|---|---|
| Mode of Action | Mitochondrial electron transport inhibitor (METI) at complex I |
| Target Pests | Effective against all motile stages of spider mites (Tetranychidae) including eggs |
| Knockdown Effect | Quick action with visible effects within 24 hours |
| Residual Activity | Provides protection for 14-21 days depending on application conditions |
| Rainfastness | Excellent resistance to wash-off after drying (1-2 hours) |
Application Guidelines:
| Crop | Target Pest | Dosage (g a.i./ha) | PHI (days) |
|---|---|---|---|
| Apples | European red mite, Two-spotted spider mite | 30-50 | 14 |
| Citrus | Citrus red mite, Rust mites | 25-50 | 7 |
| Cotton | Spider mites | 50-75 | 21 |
| Vegetables | Two-spotted spider mite | 30-50 | 3-7 |
Fenpyroximate Technical FAQ
Q: What is the recommended application method for Fenpyroximate Technical?
A: Fenpyroximate Technical should be applied as a foliar spray using conventional ground equipment. Ensure thorough coverage of all plant surfaces, especially the undersides of leaves where mites typically reside. For best results, apply when pest populations are first noticed or as a preventive treatment when pest pressure is expected. Maintain proper agitation in the spray tank as the product is not systemic and requires direct contact with the target pests.
Q: How does Fenpyroximate Technical compare to other miticides in terms of resistance management?
A: Fenpyroximate Technical belongs to the Group 21A acaricides (METI inhibitors) with a unique mode of action that differs from organophosphates, carbamates, or pyrethroids. This makes it an excellent choice for resistance management programs. However, to prevent resistance development, we recommend rotating Fenpyroximate Technical with miticides from different chemical classes (at least two modes of action). Field monitoring shows that when used properly in rotation, Fenpyroximate Technical maintains high efficacy against mite populations that have developed resistance to other chemical classes.
Q: What are the safety precautions when handling Fenpyroximate Technical?
A: Always wear appropriate personal protective equipment (PPE) including chemical-resistant gloves, protective eyewear, long-sleeved shirt, long pants, shoes plus socks when handling Fenpyroximate Technical. Avoid contact with skin, eyes, or clothing. Do not eat, drink, or smoke while handling the product. After handling, wash thoroughly with soap and water. In case of skin contact, wash immediately with plenty of water. If eye contact occurs, rinse cautiously with water for several minutes. The product has moderate acute toxicity via the oral route (LD50 rat: 245 mg/kg) and low acute dermal toxicity (LD50 rabbit: >2000 mg/kg). Store in original container in a cool, dry, well-ventilated area away from food, feed, and seed.
Why Choose Fenpyroximate Technical?
- Proven efficacy against all motile stages of mites, including eggs
- Long residual activity reduces the need for frequent applications
- Excellent rainfastness ensures product stays effective after rainfall
- Low mammalian toxicity compared to many traditional acaricides
- Compatible with most commonly used pesticides (always conduct a jar test first)
- Minimal impact on beneficial insects when used as directed
Storage and Stability:
| Condition | Recommendation |
|---|---|
| Temperature | Store below 30°C (86°F) |
| Humidity | Keep container tightly closed in dry conditions |
| Light | Protect from direct sunlight |
| Shelf Life | 2 years from manufacturing date when stored properly |
Environmental Profile:
| Aspect | Data |
|---|---|
| Soil Half-life (DT50) | 14-30 days (aerobic conditions) |
| Water Photolysis DT50 | 6.5 days |
| Bee Toxicity | Practically non-toxic (LD50 >100 μg/bee) |
| Bird Toxicity | Slightly toxic (LD50 Bobwhite quail: >2000 mg/kg) |
| Fish Toxicity | Moderately toxic (LC50 Rainbow trout: 0.71 mg/L) |
Tank Mix Compatibility:
Fenpyroximate Technical shows good compatibility with most commonly used insecticides and fungicides, except strongly alkaline materials (pH >9). Always conduct a jar test before preparing large tank mixes. Some recommended compatible products include:
- Most neonicotinoids (e.g., imidacloprid, thiamethoxam)
- Many fungicides (e.g., mancozeb, chlorothalonil)
- Selected insecticides (e.g., spinosad, indoxacarb)
Avoid mixing with sulfur or oil-based products unless specifically tested.