Sulfentrazone

Sulfentrazone is a herbicide used in the control of broadleaf weeds, sedges, and some grasses. It is a member of the triazinone family of chemicals, which act as protoporphyrinogen oxidase inhibitors. Sulfentrazone is used in a variety of settings, including turf, ornamental plants, and certain agricultural crops.

Chemistry

Sulfentrazone is a white, crystalline solid with a slight aromatic odor. It is not soluble in water and has a low vapor pressure, making it unlikely to volatilize into the air. It is stable under normal temperatures and pressures, but it may decompose when exposed to light.

Mode of Action

Sulfentrazone acts as a protoporphyrinogen oxidase (PPO) inhibitor. PPO is an enzyme that is essential for the synthesis of chlorophyll, the molecule that plants use to convert sunlight into energy. By inhibiting PPO, sulfentrazone causes a buildup of protoporphyrin IX, which, when exposed to light, produces reactive oxygen species that damage cell membranes and lead to plant death.

Use

Sulfentrazone is used to control a variety of weeds, including broadleaf weeds, sedges, and some grasses. It is used in a variety of settings, including turf, ornamental plants, and certain agricultural crops. It is typically applied as a pre-emergent herbicide, meaning it is applied to the soil before the weeds emerge.

Safety

Sulfentrazone is classified as a Category C (possible human carcinogen) by the Environmental Protection Agency (EPA). It is not considered to be a significant risk to wildlife or the environment when used as directed.