Malathion is a nonsystemic, wide-spectrum organophosphate insecticide. It was one of the earliest organophosphate insecticides developed. Malathion is suited for the control of sucking and chewing insects on fruits and vegetables, and is also used to control mosquitoes, flies, household insects, animal parasites (ectoparasites), and head and body lice. Malathion may also be found in formulations with many other pesticides.
Physical and Chemical Properties |
|
Common name |
Malathion Technical |
| Purity |
95.00% Min |
| Malaoxon |
0.10% Max |
| Isomalthion |
0.40% Max |
| Acidity |
0.20% Max as H2SO4 |
| Chemical Family |
Organophosphate |
| IUPAC Name |
diethyl(diethoxythiophosphorylthio)succinate |
| CAS No |
[121-75-5] |
| Empirical Formula |
C10H19O6PS2 |
| Structural Formula |
 |
| Molecular Weight |
330.4 |
| Appearance |
Clear Amber liquid |
| Odour |
Mercaptane Odor |
| Boiling Point |
156-157°C |
| Specific Gravity |
1. 32 at 25 oC |
| Vapour Pressure |
5.3 mPa (30°C) |
| Solubility |
In water 145 mg/lit at 25 oC.
Miscible with most organic solvents, eg. Alcohols, esters, ketones, ethers, aromatic hydrocarbos. Slightly soluble in petroleum ether and some types of mineral oil |
| Stability |
Relatively stable in neutral, aqueous media. Decomposed by strong acids and by alkali; hydrolysis DT50 107 d(pH 5), 6 d(pH 7) 0.5 d(pH 9) |
| Flash Point |
163°C |
| Toxicity |
| Route |
Species |
LD50 Mg/Kg of B/w |
| Oral |
Rat |
1375-5000 |
| Dermal |
Rabbit |
>2000 |
|
| Antidote |
Atropine |
| Packing |
200 Ltr UN approved Drums |
| Formulation Available |
50%EC, 57% EC, 96% ULV, 25% WP and 50% WP |
|
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