Mecoprop

Mecoprop (or MCPP) is a chemical compound used as a selective herbicide. It is a member of the phenoxy herbicide group and is commonly used for the post-emergence control of annual and perennial broadleaf weeds in a variety of crops and environments.

Chemical Structure and Properties

Mecoprop is a chiral compound, meaning it has two enantiomers, or forms that are mirror images of each other. These enantiomers have different biological activities, with the (R)-enantiomer being more active as a herbicide than the (S)-enantiomer. Mecoprop is often sold as a mixture of both enantiomers.

The chemical formula of mecoprop is C10H11ClO3, and it has a molecular weight of 214.64 g/mol. It is a white crystalline solid at room temperature, with a melting point of 114-116 °C and a boiling point of 210-220 °C.

Uses

Mecoprop is used to control a wide range of broadleaf weeds, including dandelion, clover, and ground ivy. It is used in both agricultural and non-agricultural settings, including lawns, golf courses, and other turf areas.

Health Effects

Exposure to mecoprop can cause a variety of health effects, depending on the route and duration of exposure. Short-term exposure can cause skin and eye irritation, while long-term exposure can cause damage to the liver and kidneys. Mecoprop is also a potential endocrine disruptor.

Environmental Impact

Mecoprop is moderately persistent in the environment, with a half-life in soil of 1-3 weeks. It is highly soluble in water and can leach into groundwater. It is also toxic to some aquatic organisms.

Regulation

In the European Union, mecoprop is approved for use as a herbicide under certain conditions. In the United States, it is classified as a general use pesticide by the Environmental Protection Agency.