Fenoprop

Fenoprop is a herbicide that was first introduced in the 1960s for the control of broadleaf weeds. It is a selective post-emergence herbicide, meaning it is applied after the weeds have emerged from the soil. Fenoprop is also known by its trade name, Silvex.

Chemical Structure and Properties

Fenoprop is a phenoxy herbicide, which means it is derived from phenol. Its chemical formula is C9H7Cl3O3. It is a white crystalline solid at room temperature and is soluble in water. The molecular weight of fenoprop is 255.5 g/mol.

Mode of Action

Fenoprop works by mimicking the action of the plant hormone auxin, which regulates plant growth. When applied to the plant, fenoprop causes an overproduction of auxin, leading to uncontrolled growth and eventually death of the plant.

Usage

Fenoprop was widely used in the 1960s and 1970s for the control of broadleaf weeds in cereal crops, pastures, and non-crop areas. However, its use has been discontinued in many countries due to its high toxicity and potential for bioaccumulation.

Health Effects

Exposure to fenoprop can cause a range of health effects, including skin and eye irritation, nausea, vomiting, and in severe cases, damage to the liver and kidneys. Long-term exposure can also lead to cancer.

Environmental Impact

Fenoprop is highly toxic to aquatic life and can cause long-term damage to aquatic ecosystems. It is also persistent in the environment and can bioaccumulate in fish and other aquatic organisms.

Regulation

Due to its high toxicity and environmental impact, the use of fenoprop has been banned or restricted in many countries, including the United States and the European Union.

See Also

• Herbicide
• Phenoxy herbicide
• Auxin
• Bioaccumulation
• Toxicity