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Chlorpyrifos
Common
Name£ºChlorpyrifos
Chemical Name:
¡¡¡¡O,O-diethyl O-(3,5,6-trichloro-2-pyridinyl) phosphorothioate
Chemical Structure:
¡¡¡¡  ¡¡¡¡¡¡¡¡¡¡¡¡
CAS NO.:2921-88-2.
Specification£º95% min
Physical & Chemical Properties£º(technical)
¡¡¡¡Mol. wt. 350.6 M.f. C9H11Cl3NO3PS
¡¡¡¡Form Colorless crystals, with a mild mercaptan odor M.p. 42-43.5¡æ
V.p. 2.7 mPa (25¡æ); KowlogP= 4.7 S.g./density 1.44(20¡æ)
Solubility In water c.1.4mg/l(25¡æ). In benzene 7900, acetone 6500,
chloroform 6300,carbon disulfide 5900,diethyl ether 5100,xylene 5000,iso-octanol
790,methanol 450(all in g/kg, 25¡æ)Stability Rate of hydrolysis increases
with pH, and in the presence of copper and possibly of other metals
that can form chelates; DT50 1.5d(water,pH8,25¡æ)to 100d(phosphate
buffer,pH7,15¡æ£©.
Mode of Action:
¡¡¡¡Non-systemic insecticide with contact, stomach, and respiratory
action.
Toxicity:
¡¡¡¡Acute oral LD50163mg/kg(rat), acute dermal LD50>2000mg/kg.
It has slightly irritation to eyes and moderate irritation to skin
.
Formulation:20%EC,48%EC |
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