CAS No.: 2921-88-2
Molecular Formula: C9H11Cl3NO3PS
Molecular Weight: 350.59
|
Melting point |
42-44°C |
|
Boiling point |
200°C |
|
Density |
1.398 |
|
vapor pressure |
5.03 x 10-5 mmHg at 25 °C (subcooled liquid vapor pressure calculated from GC retention time data,Hinckley et al., 1990) |
|
Flash point |
2 °C |
|
storage temp. |
APPROX 4°C |
|
solubility |
(At 25 °): 6.5, 7.9, 6.3, and 0.45 kg/kg in acetone, benzene, chloroform, and methanol, respectively (Worthing and Hance, 1991) |
|
pka |
-5.28±0.10(Predicted) |
|
form |
solid |
|
color |
White to off-white |
|
Water Solubility |
Insoluble. 0.00013 g/100 mL |
|
Stability |
Stable. Incompatible with strong oxidizing agents. |
|
Symbol(GHS) |
|
|
Signal word |
Danger |
|
Hazard Codes |
T;N,N,T,Xn,F,Xi |
|
RIDADR |
UN 2783 |
|
HazardClass |
6.1(b) |
|
PackingGroup |
III |
|
HS Code |
29333990 |
Chlorpyrifos is a kind of crystalline organophosphate insecticide, acaricide and miticide used primarily for the control of foliage and soil-borne insect pests in many kinds of food and feed crops. Chlorpyrifos is widely used around the world to control pest insects in agricultural, residential and commercial settings. Its largest usage amount is consumed in corn. It can also be used on other crops or vegetables including soybeans, fruit and nut trees, cranberries, broccoli, and cauliflower. The non-agricultural applications include golf courses, turf, green houses, and no-structural wood treatment. It can also be used as a mosquito adulticide, and used in roach and anti bait stations in child resistant packaging. Its mechanism of action is through suppressing the nervous system of insects via inhibiting acetylcholinesterase.
Chlorpyrifos belongs to the class of insecticides known as organophosphates. Technical chlorpyrifos is an amber to white crystalline solid with a mild sulfur odor. It is insoluble in water, but soluble in benzene, acetone, chloroform, carbon disulfi de, diethyl ether, xylene, methylene chloride, and methanol. Formulations of chlorpyrifos include emulsifi able concentrate, dust, granular wettable powder, microcapsule, pellet, and sprays. Chlorpyrifos is widely used as an active ingredient in many commercial insecticides, such as Dursban and Lorsban, to control household pests, mosquitoes, and pests. Formulations of chlorpyrifos include emulsifi able concentrates, granules, wettable powders, dust, microcapsules, pellets, and sprays.
