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Chemical Identification
Common Name
Phosalone
中文通用名
伏杀硫磷
IUPAC
S-6-chloro-2,3-dihydro-2-oxo-1,3-benzoxazol-3-ylmethyl O,O-diethyl phosphorodithioate
CAS
S-[(6-chloro-2-oxo-3(2H)-benzoxazolyl)methyl] O,O-diethyl phosphorodithioate
CAS No.
2310-17-0
Molecular Formula
C12H15ClNO4PS2
Molecular Structure
Category
Activity
Acaricide/Miticide
Premix
Emulsifiable concentrate, wettable powder, flowable. Premix Parters: kasugamycin;
Physical Properties
Molecular weight:367.8; Physical form:Colourless crystals, with an odour of garlic. Density:1.338 g/ml (20 °C); Melting point:42-48 °C ( tech.); Vapour pressure:<0.06 mPa (25 °C); Henry constant:7.4 × 10-3 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 4.01 (20 °C); Solubility:In water 3.05 mg/l (25 °C). In ethyl acetate, acetone, acetonitrile, benzene, chloroform, dichloromethane, dioxane, methyl ethyl ketone, toluene, xylene c. 1000, hexane 11 (all in g/l, 20 °C).; Stability:Hydrolysed by strong alkalis and acids; DT50 9 d (pH 9).
Toxicology
Oral:Acute oral LD50 for rats 120 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats 1500 mg/ kg. Inhalation: LC50 (4 h) for female rats 0.7 mg/l. Phytotoxicity:Non-phytotoxic when used at the recommended application rates. At higher application rates, Golden Delicious and other yellow apple varieties have been injured. ADI:( JMPR) 0.0005 mg/ kg b.w. [1996].
Environmental Profile
Ecotoxicology: 
Algae:Low toxicity.Birds:Acute oral LD50 for mallard ducks >2150 mg/kg. Dietary LC50 (8 d) for bobwhite quail 2033, mallard ducks 1659 ppm diet.Daphnia: EC50 (48 h) 0.74µg/l.Fish: LC50 (96 h) for rainbow trout 0.63, carp 2.1 mg/l.Worms:Moderately toxic. 

Environmental fate: 
Animals:Rapidly eliminated, primarily via urine.Soil:Low mobility in soils; strongly adsorbed and rapidly degraded; DT50 c. 1-4 d.Plant:Rapidly degraded via oxidation, cleavage, hydrolysis and dechlorination.
Transport Information
Signal Word:WARNING; Hazard Class:II(Moderately hazardous)

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