Napropamide

Trade name(s) Devrinol

Manufacturer(s) United Phosphorus

Formulation(s) 2 lb/gal emulsifiable concentrate; 10% granular; 50% wettable powder; 50% dry flowable

Remarks A preemergence, soil-applied herbicide to control annual grasses and some annual broadleaf weeds. Little, if any, loss from soil surface by volatilization, but if sunlight is intense, loss by photodecomposition is fairly rapid.

Water solubility 73 ppm

Storage conditions Store between 20° and 90°F.

Acute toxicity LD50 - 5,000 mg/kg

Action in plant Inhibits root growth.

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

Chemical family Acetamide

Koc Average is 700 mL/g