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Red Sun's Deltamethrin (CAS 52918-63-5) is a premium white crystalline insecticide powder with exceptional purity and stability, ideal for agricultural pest control and public health applications. This highly effective pyrethroid targets cotton aphids, bollworms, and various crop pests while maintaining stability under light and acidic conditions.
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Deltamethrin (CAS 52918-63-5), characterized by the molecular formula C₂₂H₁₉Br₂NO₃, is an advanced synthetic pyrethroid insecticide engineered for exacting efficacy in commercial agricultural and public health sectors. Presented as a finely milled, odorless white crystalline powder, this active ingredient offers a dry, non-clumping tactile consistency that ensures excellent dispersion and stability during downstream formulation. Manufactured under stringent ISO 9001 quality management and ISO 14001 environmental management protocols, every batch guarantees exceptional purity and reliable consistency for global procurement managers.
Featuring a precise melting point of 98–101°C and a remarkably low vapor pressure, this compound minimizes volatilization losses during field application, maximizing the economic value of every spray. While only slightly soluble in water, it dissolves readily in organic solvents such as acetone and dimethylformamide (DMF), providing agrochemical formulators with versatile integration options for emulsifiable concentrates (EC) or suspension concentrates (SC). By delivering rapid knockdown capabilities and extended residual control against a broad spectrum of pests, this active ingredient empowers large-scale farming operations to effectively manage resistant insect populations, ultimately safeguarding crop yields and optimizing operational expenditures.
Parameter | Details |
Product Name | Deltamethrin |
CAS Number | 52918-63-5 |
Molecular Formula | C₂₂H₁₉Br₂NO₃ |
Appearance | White crystalline powder, odorless |
Melting Point | 98–101°C (technical grade), 101–102°C (pure) |
Vapor Pressure | 1.999×10⁻⁶ Pa (25°C) |
Solubility | Soluble in acetone, cyclohexanone, benzene, DMF, DMSO, dioxane |
Water Solubility | 10 mg/L |
Stability | Stable under light and in acidic solution |
Decomposition | Decomposes above 190°C, unstable in alkaline solution |
Classification | Pyrethroid insecticide |
Applications | Controls aphids, bollworms; used on cotton, tobacco, fruits, vegetables |
The synthesis and structural engineering of Deltamethrin CAS 52918-63-5 involve a highly controlled multi-step chemical process. The following sections detail the precise manufacturing route, structural isolation, and the analytical R&D support that ensures the final compound's dependable field performance.
The synthetic route initiates with (1R, cis)-2,2-dimethyl-3-(2,2-dibromovinyl) cyclopropane carboxylic acid, commonly referred to as dibromochrysanthemic acid. Under strictly monitored thermal conditions, this precursor is chlorinated using thionyl chloride. This specific reaction yields dibromochrysanthemoyl chloride, a highly reactive and essential intermediate that dictates the efficiency of all subsequent molecular bonding phases.
In a parallel reaction vessel, m-Phenoxybenzaldehyde is carefully reacted with hydrocyanic acid. This step requires precise environmental controls to safely and efficiently produce α-cyano-m-phenoxybenzyl alcohol. As a vital structural building block, this alcohol introduces the critical cyano group into the molecular framework, which is directly responsible for the enhanced neurotoxic effect the final insecticide exerts on target pests.
The culmination of the synthesis occurs when dibromochrysanthemoyl chloride reacts with (+)-α-cyano-m-phenoxybenzyl alcohol in the presence of a pyridine catalyst. This esterification process forms the raw Deltamethrin matrix. To guarantee the success of this phase, we provide comprehensive analytical documentation, utilizing HPLC and NMR testing to verify that the esterification is complete and free from performance-degrading byproducts.
The resulting Deltamethrin molecule possesses three asymmetric carbon atoms, generating eight potential stereoisomers. However, only a single specific isomer demonstrates the intense insecticidal activity required for commercial agricultural use. Through advanced isolation techniques and mass spectrometry (MASS) verification, our production process selectively enriches this highly active isomer, ensuring that formulators receive a potent, highly concentrated active ingredient.
Built upon the foundational processes developed by Roussel-Uclaf, our industrial-scale manufacturing integrates modern green chemistry principles. By optimizing solvent recovery and employing closed-loop recycling systems, we actively reduce inactive isomer waste and lower the overall carbon footprint. This sustainable approach not only minimizes environmental impact but also reduces production costs, allowing us to offer highly competitive pricing for bulk material procurement.
As a leading synthetic pyrethroid, this compound is tailored for rigorous applications across agriculture, public health vector control, and structural pest management. Its defining characteristics provide formulators with clear advantages in efficacy, stability, and environmental predictability.
Operating as a potent neurotoxin for invertebrates, the compound fundamentally disrupts the sodium ion channels within the insect nervous system. This disruption leads to immediate overstimulation, rapid physical paralysis (the "knockdown" effect), and subsequent mortality. It delivers reliable control through both direct contact and stomach ingestion. Key advantages include:
Broad-Spectrum Efficacy: Highly active against mosquitoes, flies, ticks, fleas, cockroaches, ants, and numerous agricultural beetles.
Behavioral Modification: Exhibits strong repellent and anti-feeding properties, preventing crop damage even before lethal doses are ingested.
Extended Residuals: Maintains active surface toxicity for prolonged periods, directly reducing the labor and material costs associated with frequent reapplication.
Visually presenting as a pure, colorless to white crystalline solid, the product is entirely odorless, making it highly suitable for indoor public health formulations where chemical odors are unacceptable. It remains structurally intact under acidic conditions and standard light exposure, though it requires buffering when formulated in alkaline environments. Its strong lipophilic nature, indicated by a high partition coefficient, allows it to rapidly penetrate the waxy cuticles of insect exoskeletons. Furthermore, its exceptionally low vapor pressure prevents the active ingredient from evaporating off plant surfaces, ensuring that non-systemic foliar sprays remain exactly where they are applied.
When utilized according to recommended agricultural guidelines, the compound demonstrates low toxicity to mammals and avian species, as it is rapidly metabolized and excreted without bioaccumulating in mammalian tissues. However, due to its intense efficacy, it is highly toxic to aquatic life and beneficial pollinators like honeybees; therefore, application timing must avoid active foraging periods and aquatic buffer zones. In the soil profile, the molecule binds aggressively to clay particles and organic matter. This strong adsorption severely limits its downward mobility, effectively eliminating the risk of groundwater leaching and ensuring predictable environmental degradation.
By leveraging its intense contact and stomach action, this pyrethroid serves as a foundational tool for crop protection and vector management programs. The specific use cases below illustrate its adaptability across diverse agricultural and civic environments.
For extensive cotton plantations facing severe lepidopteran pressure, application at 25 mg/L effectively neutralizes red bollworms, cotton bollworms, and leafhoppers. During periods of active aphid and thrip infestation, a targeted 15 mg/L foliar spray delivers immediate population suppression, protecting the developing bolls and preserving lint quality.
Commercial vegetable growers utilize the 2.5% EC formulation, typically diluted between 2000 and 3000 times, to combat destructive chewing pests. It is highly effective against cabbage worms, diamondback moths, and beet armyworms. For maximum economic return, applications are timed to target the early larval stages before significant foliar damage occurs.
Maintaining the visual and structural integrity of tea leaves is critical. Applied as a 2.5% EC at a 2500–3000 times dilution, it provides rapid control of the tea geometrid and tea tussock caterpillar. Strategic monitoring and precise application timing ensure that pest pressure is minimized while adhering to strict harvest interval regulations.
In paddy environments, standard foliar applications are deployed to suppress rice stem borers, thrips, and leaf folders. By preventing these insects from damaging the stalks and foliage, the active ingredient helps maintain the plant's photosynthetic capacity, directly securing the final grain yield under demanding field conditions.
Fruit producers rely on this compound to manage complex pest complexes that threaten marketable yields. It is routinely applied to control the citrus leaf miner, pear fruit moth, and peach fruit moth. Its broad-spectrum nature also makes it valuable against the sugarcane borer and soybean pod borer in mixed-cropping systems.
Beyond agriculture, it is a critical asset for municipal vector control programs. It provides decisive management of sanitation pests, including flies and disease-carrying mosquitoes. While highly effective in reducing vector populations in urban and residential zones, operators must maintain strict buffer zones around natural waterways to protect aquatic ecosystems.
Understanding the precise toxicological profile is essential for the safe formulation, transport, and application of this chemical. We provide comprehensive Safety Data Sheets (MSDS) and strictly adhere to international regulatory exposure limits to ensure operator and environmental safety.
Extensive laboratory testing establishes the Oral LD50 at 155 mg/kg for male rats and 60 mg/kg for females. The Dermal LD50 in rat populations exceeds >2940 mg/kg, indicating a lower risk via skin absorption. The Inhalation LC50 is recorded at 600 mg/m³, necessitating adequate respiratory protection during milling or mixing.
Dermatological assessments confirm that the compound shows no skin irritation upon contact. However, it does cause mild eye irritation. Facility workers and field applicators must utilize standard protective gear, including sealed safety goggles, to mitigate any direct exposure risks.
Long-term exposure studies indicate No Observed Adverse Effect Levels (NOAEL) of 2.5–10 mg/kg daily in rat models. Chronic safe dietary concentrations have been established at 50 mg/kg in rats, 100 mg/kg in mice, and 40 mg/kg in canine subjects, demonstrating a predictable safety margin for mammalian species.
Rigorous animal trials confirm the absence of carcinogenic, teratogenic, or mutagenic effects. Furthermore, multi-generation reproduction tests report no abnormal developmental outcomes, verifying that the compound does not disrupt long-term biological reproduction cycles.
The active ingredient exhibits extreme sensitivity in aquatic environments. Over a 96-hour testing period, the LC50 is measured at an incredibly low 0.001 mg/L for bluegill fish and 0.006–0.008 mg/L for rainbow trout. Runoff prevention is an absolute necessity during field application.
While relatively safe for bird populations (Oral LD50 for mallard ducks is 4640 mg/kg), the compound is highly lethal to essential insects. The Oral LD50 for honeybees is a mere 0.079 μg/bee, and it is documented as highly toxic to commercial silkworms, requiring strict spatial management near apiaries and mulberry plantations.
Industrial personnel must wear chemical-resistant gloves, protective eyewear, and full-coverage clothing when handling the technical grade powder or mixing concentrated formulations. Strict adherence to label restrictions is required to prevent accidental water contamination and ensure comprehensive operational safety.
To support the complex logistical and developmental needs of international agrochemical producers, we provide a complete suite of supply chain and technical services. Our infrastructure is designed to ensure that bulk materials arrive safely, consistently, and ready for immediate downstream processing.
Industrial-Grade Packaging: To protect the fine crystalline powder from moisture ingress and physical degradation during transit, we utilize robust industrial packaging systems. Standard options include heavy-duty fiber drums equipped with double-layered polyethylene (PE) liners, ensuring absolute material integrity upon global delivery.
Quality Control Documentation: Every shipment is accompanied by authoritative, batch-specific documentation. We provide complete Certificates of Analysis (CoA), alongside detailed HPLC, MASS, and NMR testing reports, giving formulation chemists complete confidence in the purity profile.
Custom Synthesis & R&D Services: Beyond standard supply, our laboratory teams offer contract research and manufacturing services (CRAMS). We support custom synthesis requirements, provide specific impurity reference standards, and assist with complex formulation development to accelerate your product's journey from the lab to the commercial market.
