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| CAS number | 14404-33-2 |
| Molecular formula | Cl5H2K2ORu |
| Product name | Potassium pentachlororuthenate (III) hydrate |
| Molecular Structure |  |
Appearance：brown needles.
Melting Point：146-148 °C
CAS No. 14404-33-2 is an organophosphate insecticide, commonly known as dimethoate. It is an odorless, white to light yellow crystal powder or granules, with a melting point of about 84-87°C and a solubility of about 1.2g/L in water at 20°C. It is mainly used to control several species of insects, such as aphids, thrips, beetles, and larvae, in a variety of crops, such as cotton, potatoes, tomatoes, and other vegetables.
Dimethoate is a contact and systemic insecticide, meaning it works by killing insects upon contact and also by being absorbed into the plant and killing insects that feed on it. The insecticide acts as an acetylcholinesterase inhibitor, meaning it inhibits the action of the enzyme acetylcholinesterase, which is responsible for breaking down acetylcholine, a neurotransmitter in the insect nervous system. Inhibition of this enzyme results in an accumulation of acetylcholine at the junction between the nerves and muscles, eventually leading to paralysis and death of the insect.
In addition to its insecticidal properties, dimethoate has also been used as a nematicide, meaning it kills nematodes, which are a type of small, worm-like parasites. Dimethoate is toxic to a wide range of aquatic organisms, including fish and crustaceans. It is also toxic to bees and other beneficial insects, so it should not be applied when pollinating insects are present.
Dimethoate is a restricted-use pesticide, meaning it can only be applied by a certified applicator or under the direct supervision of a certified applicator. It should be used according to the instructions on the label, and any unused product should be disposed of safely.
