Temephos is an nonsystemic organophosphorus insecticide used to control mosquito, midge, and black fly larvae. It is used in lakes, ponds, and wetlands. It also may be used to control fleas on dogs and cats and to control lice on humans. Temephos is available as 50% emulsifiable concentrates, 50% wettable powder, 5% and 1% granular forms.
Physical and Chemical Properties |
|
Product Name |
Temephos Technical |
| Purity |
90.00% Min |
| Acidity |
0.30% Max as H2SO4 |
| Chemical Family |
Organophosphate |
| IUPAC Name |
O,O,O’,O’-tetramethyl O,O’-thiodi-p- phenylene bis(phosphorothioate) |
| CAS No |
[3383-96-8] |
| Empirical Formula |
C16H20O6P2S |
| Structural Formula |
 |
| Molecular Weight |
466.5 |
| Appearance |
Brown viscous liquid |
| Odour |
Mercaptane Odor |
| Boiling Point |
120-125°C (Decomp) |
| Specific Gravity |
1.32 at 20 oC |
| Vapour Pressure |
8 x 10 -3 mPa (25°C) |
| Solubility |
In water 0.03 mg/lit. at 25 oC.
Soluble in common organic solvents such as diethyl ether, aromatic and chlorinated hydrocarbons |
| Stability |
Moderately stable to hydrolysis in contact with aqueous alkali; no observed hydrolysis at pH 8 at room temperature for several weeks or at pH 11 at 40°C for several hours. |
| Flash Point |
>120°C |
| Toxicity |
| Route |
Species |
LD50 Mg/Kg of B/w |
| Oral |
Rat |
>2000 |
| Dermal |
Rabbit |
>2000 |
|
| Antidote |
Atropine and Pralidoxime |
| Packing |
200 Ltr UN approved Drums |
| Formulation Available |
50%EC and 1% G |
|
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