Deltamethrin Technical
Deltamethrin Technical is a highly effective synthetic pyrethroid insecticide widely used in agricultural and public health applications. Known for its broad-spectrum activity, it provides excellent control of various insect pests while demonstrating low mammalian toxicity. This technical-grade product serves as the base material for formulating numerous end-use insecticide products.
Product Specifications
Key Parameters
- Chemical Name: (S)-α-cyano-3-phenoxybenzyl (1R,3R)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate
- CAS No.: 52918-63-5
- Molecular Formula: C22H19Br2NO3
- Molecular Weight: 505.21
- Appearance: White to off-white crystalline powder
- Active Ingredient: ≥98% pure
- Melting Point: 98-101°C
- Vapor Pressure: 1.24×10-5 Pa at 25°C
- Solubility:
- Water: 0.002 mg/L at 20°C
- Acetone: 450 g/L
- Ethanol: 15 g/L
- Xylene: 250 g/L
Technical Characteristics
| Parameter | Value |
|---|---|
| Flash Point | >200°C (closed cup) |
| Density | 0.55 g/cm3 (bulk density) |
| Stability | Stable under normal conditions, decomposes at >190°C |
| pH (1% solution) | 4.5-6.5 |
| Storage Temperature | 0-30°C |
| Shelf Life | 2 years in original packing |
FAQ Section
Deltamethrin Technical FAQ
Q: What is the recommended application rate for Deltamethrin Technical?
A: The application rate varies depending on target pests and formulation type. For agricultural uses, typical rates range from 5-25 g a.i./ha. For public health applications against mosquitoes, 0.5-1 g a.i./ha is common when applied as space spray. Always follow label instructions and local regulatory guidelines.
Q: How does Deltamethrin Technical compare to other pyrethroids?
A: Deltamethrin Technical offers several advantages: higher insecticidal activity (about 10-100 times more potent than most pyrethroids), longer residual activity, better photostability, and lower mammalian toxicity. Its unique dibromovinyl group contributes to enhanced insecticidal properties while maintaining favorable safety profiles.
Q: What precautions should be taken when handling Deltamethrin Technical?
A: Always wear appropriate PPE including chemical-resistant gloves, protective clothing, and eye protection. Avoid inhalation of dust. Work in well-ventilated areas. Store away from food and feed. In case of skin contact, wash immediately with soap and water. For eye contact, rinse carefully with water for several minutes and seek medical attention.
Application Methods
Deltamethrin Technical can be processed into various formulations including:
- Emulsifiable Concentrates (EC)
- Wettable Powders (WP)
- Suspension Concentrates (SC)
- Ultra Low Volume (ULV) formulations
- Water Dispersible Granules (WG)
Efficacy Data
| Target Pest | LC50 (mg a.i./L) | KD50 (minutes) |
|---|---|---|
| Housefly (Musca domestica) | 0.0012 | 2.5 |
| Mosquito (Aedes aegypti) | 0.0005 | 3.8 |
| Cotton Bollworm (Helicoverpa armigera) | 0.003 | 7.2 |
| German Cockroach (Blattella germanica) | 0.002 | 5.1 |
Regulatory Information
Deltamethrin Technical is registered in numerous countries worldwide. It holds:
- WHO specifications (WHO/SIT/21.R4)
- EPA registration in the United States
- EU approval under Regulation (EC) No 1107/2009
- ISO 1750:1981 classification
More Deltamethrin Technical FAQ
Q: What is the mode of action of Deltamethrin Technical?
A: Deltamethrin Technical acts on the nervous system of insects by modifying the sodium channel gating mechanism, causing repetitive nerve discharges. This leads to paralysis and eventual death of the insect. The compound binds irreversibly to voltage-gated sodium channels, prolonging their opening and disrupting normal nerve function.
Q: Is Deltamethrin Technical compatible with other pesticides?
A: Deltamethrin Technical shows good compatibility with most commonly used insecticides and fungicides. However, avoid mixing with alkaline materials (pH >8) which may cause hydrolysis. Always conduct a jar test before large-scale mixing. Some synergistic effects have been observed when combined with certain organophosphates.
Q: What is the environmental fate of Deltamethrin Technical?
A: In soil, Deltamethrin Technical degrades with a half-life of 5-21 days depending on conditions. It strongly adsorbs to soil particles, reducing leaching potential. In water, it rapidly binds to sediments with a half-life of <2 days in surface water. It shows low volatility (Henry's law constant 1.2×10-5 Pa·m3/mol) and minimal bioaccumulation potential.
Packaging Options
| Package Type | Weight | Material |
|---|---|---|
| Drum | 25 kg | HDPE with inner liner |
| Fiber Drum | 50 kg | Fiberboard with poly liner |
| Bag | 1 kg | Aluminum foil bag |
| Carton | 5 kg | Cardboard with PE bag |
Additional Technical Information
Deltamethrin Technical demonstrates excellent stability when stored properly. Key stability parameters include:
- Heat stability: Stable at 54±2°C for 14 days with ≤5% decomposition
- Hydrolytic stability: Stable at pH 4-7 for 5 days at 50°C
- Photostability: DT50 of 28 days under continuous UV light