Oxyfluorfen 23.5% EC Herbicide is a pre-emergent and post-emergent herbicide used to control broadleaf and grassy weeds in crops such as soybeans, cotton, and peanuts. It contains the active ingredient Oxyfluorfen, which is a member of the diphenyl ether herbicide family. Oxyfluorfen works by inhibiting the production of chlorophyll in the target weeds, which results in the death of the plant. Oxyflourfen 23.5% EC Herbicide is most effective when applied to the soil before the weeds emerge or are too young, actively growing weeds.