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Chemical Identification
Common Name
Acephate
中文通用名
乙酰甲胺磷
IUPAC
(RS)-(O,S-dimethyl acetylphosphoramidothioate)
or
(RS)-N-[methoxy(methylthio)phosphinoyl]acetamide
CAS
O,S-dimethyl acetylphosphoramidothioate
CAS No.
30560-19-1
Molecular Formula
C4H10NO3PS
Molecular Structure
Category
Activity
Insecticide
CropUse
For use on beans, Brussels sprouts, cauliflower, celery, cotton, cranberries, head lettuce, mint, peanuts, peppers, tobacco, ornamentals and forests.
Premix
Imidacloprid+acephate
Fenpropathrin+acephate
Beta-cypermethrin+acephate
Amicarthiazol+Thiram+Acephate
Acephate+Fipronil
Soluble powder, granules. Premix Parters: chlorpyrifos; fenpropathrin;imidacloprid
Physical Properties
Tech: White solid; strong, pungent, mercaptan-type odor. Melting point 81-91℃. Solubility at room temperature: aromatic solvents <5%; acetone or ethanol >10%.
Toxicology
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
Environmental Profile
WATER SOLUBILITY: Room temperature, 65% HAZARDS: Fish: LC50 >1000 ppm (rainbow trout, bluegill). Bird: LD50 350 mg/kg (mallard); LD50 140 mg/kg (pheasant). Bee: LC50 0:2 μg/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.
Transport Information
Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)

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