Tetramethrin
Overview
Tetramethrin is a synthetic pyrethroid insecticide first introduced in the 1960s. It is widely used in household and agricultural pest control due to its rapid knockdown effect on flying insects. The compound disrupts the nervous system of insects, leading to paralysis and death. As a Type I pyrethroid, tetramethrin is less toxic to mammals but highly effective against pests like mosquitoes, flies, and cockroaches. It is often formulated with synergists like piperonyl butoxide to enhance its efficacy.
Physical and Chemical Properties
Tetramethrin appears as a white crystalline powder with a mild odor. It is stable under normal conditions but degrades in alkaline environments. The compound has low water solubility but dissolves readily in organic solvents like acetone and ethanol. Its molecular structure includes ester and cyclopropane groups, contributing to its insecticidal activity. The melting point ranges between 65-80°C, and it has a density of 1.108 g/cm³. These properties make it suitable for formulations like aerosols and mosquito coils.
Main Applications
Tetramethrin is primarily used in household insecticide products such as mosquito coils, aerosol sprays, and electric vaporizers. Its fast knockdown effect makes it ideal for controlling flying insects in residential and commercial settings. In agriculture, it is applied to protect crops from pests, though its use is less common compared to other pyrethroids. Tetramethrin is also found in pet care products to control fleas and ticks, often combined with other active ingredients for broader spectrum activity.
Safety and Storage
While tetramethrin has low acute toxicity to humans, prolonged exposure can cause skin irritation or respiratory issues. Always use personal protective equipment (PPE) such as gloves and masks when handling the chemical. Store tetramethrin in a cool, dry place away from direct sunlight and incompatible materials like strong oxidizers. Ensure containers are tightly sealed to prevent moisture absorption and degradation. Follow local regulations for disposal to minimize environmental impact.
B2B Procurement Guide
When procuring tetramethrin, verify the CAS number (7696-12-0) and purity level, typically 95-98% for industrial use. Request certificates of analysis (CoA) and material safety data sheets (MSDS) from suppliers. Compare prices from multiple vendors, as costs vary based on quantity and purity. Bulk purchases (e.g., 25 kg drums) may offer discounts. Ensure suppliers comply with international standards like ISO or GMP to guarantee product quality and consistency.
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