Parathion-methyl

Parathion-methyl is an organophosphate compound that is used as a pesticide. It is a derivative of parathion and is also known as methyl parathion.

Chemistry[edit | edit source]

Parathion-methyl is a white crystalline solid with a characteristic odor. It is soluble in most organic solvents and slightly soluble in water. The chemical formula of parathion-methyl is C8H10NO5PS. It is a phosphorothioate ester of p-nitrophenol.

Use[edit | edit source]

Parathion-methyl is primarily used as an insecticide and acaricide. It is effective against a wide range of insects and mites that infest field crops, fruit trees, and vegetables. It is also used to control pests in stored grain.

Toxicity[edit | edit source]

Parathion-methyl is highly toxic to humans and animals. It inhibits acetylcholinesterase, an enzyme that is essential for normal nerve function. Symptoms of poisoning include nausea, vomiting, abdominal cramps, sweating, headache, dizziness, and in severe cases, seizures, loss of consciousness, and death.

Environmental Impact[edit | edit source]

Parathion-methyl is toxic to birds, fish, and bees. It is also harmful to non-target insects and other beneficial organisms. It is not readily biodegradable and can persist in the environment for long periods.

Regulation[edit | edit source]

Due to its high toxicity and environmental impact, the use of parathion-methyl is heavily regulated in many countries. In the European Union, it has been banned since 2003. In the United States, it is classified as a restricted use pesticide.