Product Name: Azamethiphos 95% TC
Active Ingredient: Azamethiphos
Chemical Name: (S)-3-[(6-Chloro-1,3-benzoxazol-2-yl)oxy]-2-diethoxyphosphinothioylsulfanylpropionamide
CAS Number: 35575-96-3
Molecular Formula: C₉H₁₀ClN₂O₅PS
Molecular Weight: 350.7 g/mol
Formulation Type: TC – Technical Concentrate
Active Content: ≥95.0% (by Gas Chromatography)
Azamethiphos 95% TC is a high-purity organophosphorus insecticide used predominantly in veterinary and public health applications. Originally developed for controlling flies and other ectoparasites in livestock environments, it is also extensively used in aquaculture, especially for controlling sea lice (Lepeophtheirus salmonis) on farmed fish, such as Atlantic salmon.
Azamethiphos is one of the few organophosphates approved for use in aquatic environments due to its effectiveness and rapid breakdown. It works primarily as a stomach and contact poison, interfering with the nervous system of insects and ectoparasites. The technical concentrate is used to formulate various end-use products including wettable powders (WP), soluble powders (SP), baits (RB), and immersion treatments for aquaculture.
Appearance: Pale yellow to off-white crystalline powder
Odor: Slight chemical odor
Melting Point: 88–94°C
Boiling Point: Decomposes before boiling
Solubility: Slightly soluble in water (~1.2 g/L at 20°C); soluble in acetone, ethanol, and methanol
Stability: Stable under dry, cool conditions. Hydrolyzes in alkaline and aqueous environments.
Vapor Pressure: Very low (non-volatile under normal conditions)
Flash Point: Not applicable (solid)
Active Ingredient (Azamethiphos): ≥95.0%
Water Content: ≤0.5%
Acidity (as H₂SO₄): ≤0.3%
Insoluble Matter in Acetone: ≤0.5%
Appearance: Free-flowing crystalline solid
Target Pests:
House flies (Musca domestica)
Stable flies (Stomoxys calcitrans)
Sea lice (Lepeophtheirus salmonis, Caligus elongatus)
Other parasitic flies and insects in livestock environments
Use Areas:
Livestock housing: cattle barns, poultry houses, pig farms
Aquaculture: sea lice control in fish farming
Public health: waste management facilities, food storage sites
Formulated Products:
1% and 10% baits
50% WP or SP
500 mg/L aqueous treatments for aquaculture
Coated bait granules and fly strips
Azamethiphos inhibits acetylcholinesterase, an essential enzyme for nerve signal transmission in insects and parasites. By blocking the breakdown of acetylcholine, nerve impulses remain active, causing convulsions, paralysis, and eventual death of the pest. The compound acts through contact and ingestion.
Oral LD₅₀ (rat): 1100–1200 mg/kg (moderate toxicity)
Dermal LD₅₀ (rat): >2000 mg/kg
Inhalation LC₅₀ (rat, 4h): >2.1 mg/L
Skin Irritation: Slight to non-irritating
Eye Irritation: Mildly irritating
Sensitization: Not a skin sensitizer
Environmental Hazards: Toxic to aquatic organisms and bees — follow environmental safety guidelines
Standard Packaging: 25 kg fiber drums with inner polyethylene liner or custom packaging as per client needs
Storage Conditions: Store in a dry, cool, well-ventilated area. Keep away from moisture, acids, and strong alkalis.
Shelf Life: Minimum 2 years under proper storage conditions
Azamethiphos 95% TC is a reliable, high-purity active ingredient for formulating insecticidal products in agriculture, veterinary medicine, aquaculture, and public health. Let me know if you need SDS, COA, or formulation assistance.
