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Deltamethrin CAS 52918-63-5, Molecular Formula C22H19Br2NO3, offered by Red Sun, is a premium white crystalline powder with high purity and stable performance. It shows a melting point of 98–101°C, low vapor pressure, and excellent solubility in organic solvents such as acetone and dimethylformamide, while remaining only slightly soluble in water. The product maintains stability under light and acidic conditions but decomposes at elevated temperatures or in alkaline environments, ensuring reliable use in diverse applications.
As a highly effective pyrethroid insecticide, Deltamethrin from Red Sun delivers superior pest control for agriculture and public health. It effectively targets cotton aphids, bollworms, and a wide range of crop pests, making it suitable for cotton, tobacco, fruits, and vegetables. With consistent quality and global supply capability, Red Sun positions itself as a trusted manufacturer and supplier of Deltamethrin for farmers, distributors, and agrochemical companies worldwide.
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 |
Deltamethrin CAS 52918-63-5 (C22H19Br2NO3) is a synthetic pyrethroid insecticide. The following sections describe its synthesis process, structural features, and performance considerations.
The process begins with (1R, cis)-2,2-dimethyl-3-(2,2-dibromovinyl) cyclopropane carboxylic acid, also called dibromochrysanthemic acid. This compound is chlorinated with thionyl chloride to form dibromochrysanthemoyl chloride, which acts as a critical intermediate for subsequent reactions.
m-Phenoxybenzaldehyde undergoes a reaction with hydrocyanic acid to produce α-cyano-m-phenoxybenzyl alcohol. This alcohol is a vital intermediate and provides the cyano group required for the final structure of Deltamethrin.
In the presence of pyridine, dibromochrysanthemoyl chloride reacts with (+)-α-cyano-m-phenoxybenzyl alcohol. This esterification process results in the formation of Deltamethrin, completing the synthetic route.
The Deltamethrin molecule contains three asymmetric carbon atoms, leading to eight possible isomers. Among these, only one exhibits the highest insecticidal activity. The presence of multiple isomers highlights the need for precise control during synthesis.
To improve efficiency, production methods are designed to reduce inactive or low-activity isomers. This approach lowers manufacturing cost and reduces environmental impact. The optimized process was developed by Roussel-Uclaf to enhance industrial-scale production of Deltamethrin.
Deltamethrin is a synthetic pyrethroid insecticide used in agriculture, public health, and household pest control. Its main features are grouped into insecticidal properties, physical and chemical characteristics, and toxicity with environmental behavior.
Deltamethrin is a strong pyrethroid that controls pests at low doses. It has broad-spectrum activity against mosquitoes, flies, ticks, fleas, cockroaches, ants, and beetles. The compound acts on insect sodium ion channels, causing overstimulation, paralysis, and death. It works through both contact and stomach action, and also shows repellent and anti-feeding effects on some pests. With long residual activity, it provides extended protection and reduces the need for frequent applications.
The product is a colorless to white crystalline solid with no odor. It is stable in solid form but degrades under alkaline conditions and sunlight exposure. Deltamethrin has low solubility in water but dissolves well in organic solvents like acetone and xylene. It is lipophilic, with a high partition coefficient that supports its accumulation in insect tissues. Its low vapor pressure minimizes evaporation, while its non-systemic nature means effective spray coverage is essential for reliable pest control.
Deltamethrin has low toxicity to mammals and birds under recommended use, though high doses can cause neurotoxic effects in humans. It is highly toxic to aquatic organisms and honeybees, so precautions are required near water and during flowering. In mammals, it is quickly metabolized and eliminated, preventing bioaccumulation. In soil, it binds tightly to clay and organic matter, limiting mobility and reducing the risk of groundwater contamination. These properties guide its safe and effective use in diverse environments.
Deltamethrin is a pyrethroid insecticide with strong contact and stomach action. It controls a wide range of pests quickly and safely across multiple crops. The following scenarios highlight its main uses.
Applied at 25 mg/L to manage red bollworm, cotton bollworm, and leafhoppers. For aphids and thrips, 15 mg/L spray delivers effective results during active infestation periods.
Used as 2.5% EC diluted 2000–3000 times to control cabbage worm, diamondback moth, and beet armyworm. Sprays should target early larval stages for higher efficiency.
Applied as 2.5% EC diluted 2500–3000 times to control tea geometrid and tea tussock caterpillar. Regular monitoring ensures timely treatment and reduces pest pressure in tea plantations.
Effective against rice stem borer, thrips, and leaf folder. Standard foliar applications reduce pest damage and maintain grain yield under field conditions.
Used to manage citrus leaf miner, pear fruit moth, and peach fruit moth. Also applied against sugarcane borer, soybean pod borer, and other lepidopteran pests.
Provides control of sanitation pests such as flies and mosquitoes. Application helps reduce disease vectors but should be used with caution near aquatic environments.
Deltamethrin is a pyrethroid insecticide with defined toxicological data and handling requirements. Safe use depends on protective measures, environmental care, and compliance with exposure limits.
Oral LD50 is 155 mg/kg in male rats and 60 mg/kg in females. Dermal LD50 in rats is >2940 mg/kg. Inhalation LC50 is 600 mg/m³.
The compound shows no skin irritation. It causes mild eye irritation. Standard protective gear reduces direct contact risks.
No observed adverse effect levels are 2.5–10 mg/kg daily in rats. Chronic safe concentrations include 50 mg/kg in rats, 100 mg/kg in mice, and 40 mg/kg in dogs.
Animal studies show no carcinogenic, teratogenic, or mutagenic effects. Multi-generation reproduction tests report no abnormal outcomes.
LC50 is 0.001 mg/L for bluegill fish and 0.006–0.008 mg/L for rainbow trout over 96 hours, indicating high aquatic sensitivity.
Oral LD50 for mallard ducks is 4640 mg/kg. Oral LD50 for honeybees is 0.079 μg/bee. The product is highly toxic to silkworms.
Wear gloves, goggles, and protective clothing when mixing or spraying. Avoid water contamination and follow label restrictions to reduce risks.
