Prometon

Prometon is a herbicide that is used to control a wide range of weeds and grasses. It is a systemic herbicide, meaning it is absorbed by the plant and transported throughout its system, killing the entire plant. Prometon is a member of the triazine family of herbicides, which also includes atrazine and simazine.

Chemical Structure and Properties

Prometon has the chemical formula C10H19N5 and a molecular weight of 211.29 g/mol. It is a white crystalline solid at room temperature and is slightly soluble in water. The chemical structure of prometon consists of a triazine ring, which is a six-membered ring containing three nitrogen atoms and three carbon atoms, with two isopropyl groups and one amino group attached.

Mode of Action

Prometon works by inhibiting photosynthesis in plants. It specifically targets the photosystem II (PSII) complex, which is responsible for the light-dependent reactions of photosynthesis. By blocking the electron transport chain in PSII, prometon disrupts the plant's ability to produce ATP and NADPH, two essential energy molecules. This leads to the death of the plant.

Uses

Prometon is used in non-crop areas such as roadsides, industrial sites, and railways. It is also used in home gardens and on lawns to control a variety of broadleaf weeds and grasses. Prometon is often used in combination with other herbicides to increase its effectiveness.

Environmental Impact

Prometon is moderately persistent in the environment, with a half-life in soil of approximately 90 days. It has low mobility in soil, meaning it is unlikely to leach into groundwater. However, it can be transported in surface runoff and can potentially contaminate surface waters. Prometon is toxic to aquatic organisms and can have negative impacts on non-target plants if it drifts during application.

Health Effects

Exposure to prometon can cause irritation of the eyes, skin, and respiratory tract in humans. Long-term exposure can lead to more serious health effects, including damage to the liver and kidneys.

Regulation

In the United States, prometon is regulated by the Environmental Protection Agency (EPA) under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). It is classified as a General Use Pesticide (GUP), meaning it can be purchased and used by the general public.

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