May be used as a defoliant/desiccant. A postemergence, nonselective, somewhat translocated herbicide with fast-acting contact action. Harvest aid in soybeans, sugarcane, guar, and sunflowers, for pasture renovation, for use in "No-Till" or before planting or crop emergence, dormant alfalfa and clover, directed spray, and for killing potato vines. Eradication of weeds in rubber plantations, coffee plantations, and paddy bund.
1,1’-dimethyl-4,4’-bipyridinium ion; present as the di-chloride salt (Syngenta/Crystal) or dimethyl sulfate salt (discontinued).;
Stable except under alkaline conditions. No measurable vapor pressure. Colorless crystalline solid decomposes at approximately 300°C. Sparingly soluble in lower alcohols, insoluble in hydrocarbons.
Mode of Action / Resistance Management
Mode of Action
HRAC Group D; WSSA Group 22
Fish: Slightly toxic. Bird: Moderately toxic
Soil Particle Adsorption
Strongly absorbed and inactivated by soil particles
(Rat): Oral LD50 157 mg/kg
Store above 32°F
Chemical-resistant gloves. Protective eyewear.
Get medical aid. Eyes: immediately flush with water for at least 15 minutes. Skin: wash with soap and water. Remove and wash all contaminated clothing with soap and hot water before reuse. Inhalation: immediately get away from spray mist. Ingestion: induce vomiting by inserting finger in throat. Administer fluids and induce further vomiting. Prompt treatment is essential and must be initiated before signs and symptoms of injury appear