Acetochlor

Trade name(s) Breakfree, Harness, Surpass, Cadence, TopNotch, Degree, Confidence

Manufacturer(s) Monsanto Co., Corteva, Winfield, Corteva Crop Protection

Formulation(s) 6.4 and 7 lb/gal emulsifiable concentrate; 3.2 lb/gal capsule suspension

Remarks A selective, soil-active herbicide applied preplant or preemergence to corn.

Water solubility 223 ppm

Storage conditions Store in a cool, dry, well-ventilated area away from sources of heat or flame.

Acute toxicity LD50 - 2,148 mg/kg

Action in plant Disrupts protein synthesis.

Site of action Group 15: inhibits very long chain fatty acid synthesis

Chemical family Chloroacetamide

Koc 0.4 mL/g for a Lintonia sand with 0.7% OM; 1.1 mL/g for a Ray silt loam with 1.2% OM; 1.6 mL/g for a Spinks sandy loam with 2.4% OM, 2.7 mL/g for a Drenner silty clay loam with 3.4% OM.