Action / Use ACTION: Insecticide. USE: For use on beans, Brussels sprouts, cauliflower, celery, cotton, cranberries, head lettuce, mint, peanuts, peppers, tobacco, ornamentals and forests. Asataf* for green and brown leafhopper, brown plant hopper on rice; white aphid on chili, sesamum, and cotton. Orthene* for green and brown leafhopper on rice. FORMULATIONS: Soluble powder, granules. PREMIX PARTNERS:Chlorpyrifos; Fenpropathrin; Imidacloprid.
Identification
COMMON NAME: Acephate (ANSI, ISO, BSI, JMAF).
Chemistry
COMPOSITION: O,S-dimethyl acetylphosphoramidothioate. CLASS: Organophosphate. PROPERTIES: Tech: White solid; strong, pungent, mercaptan-type odor. Melting point 81-91℃. Solubility at room temperature: aromatic solvents <5%; acetone or ethanol >10%.
Resistance Management
CHEMICAL GROUP: Organophosphate MODE OF ACTION: Acetylcholine esterase inhibitor ACTION GROUP: IRAC Group 1
Environmental Guidelines
HAZARDS: Fish: LC50 >1000 ppm (rainbow trout, bluegill). Bird: LD50 350 mg/kg (mallard); LD50 140 mg/kg (pheasant). Bee: LC50 0:2 mg/bee. SOIL PARTICLE ADSORPTION: Acephate dissipates rapidly with half-lives of <3 and 7 days in aerobic and anaerobic soils, respectively. Major metabolite was CO2 in both soil types. TLC and soil column studies indicate acephate is mobile in most soils but that aged residues (excluding acephate and its degradate methamidophos) are immobile in sandy loam soil. Apparently most of the applied acephate and degradate methamidophos degrade to immobile compounds in 20 days. WATER SOLUBILITY: Room temperature, 65%.
Safety Guidelines
TOXICITY: Tech: (Rat): Oral LD50 1447 mg/kg (male); 1030 mg/kg (female); Inhalation >61.7 mg/kg. (Rabbit): Dermal LD50 >10,250 mg/kg; Inhalation >14.8 mg/l. HANDLING/STORAGE CAUTIONS: Keep container closed when not in use. Store in cool, dry place away from food and feed. Keep out of reach of children. Avoid contact with mouth, skin, and eyes.
Emergency Guidelines
ANTIDOTE: Atropine, 2-PAM may also be used in conjunction with atropine but should NOT be used alone. FIRST AID: Ingestion: get medical aid. Induce vomiting. Eyes: flush immediately with plenty of water. Skin: wash thoroughly with soap and water. Remove contaminated clothing and shoes. Inhalation: remove to fresh air.
Acephate