Metam (restricted-use herbicide)

Trade name(s) Metam CLR, Vapam, Sectagon

Manufacturer(s) AMVAC, Tessenderlo Kerley Inc. (NovaSource)

Formulation(s) 4.2 lb and 5.63 lb /gallon soluble concentrate

Remarks Temporary soil fumigant as a preplant treatment. Controls weeds, most weed seeds, certain microorganisms, and nematodes. Activity depends on decomposition in moist soil to a volatile toxicant.

Water solubility 722,000 ppm

Storage conditions Store above 0°F to avoid crystallizing.

Acute toxicity LD50 - 285 mg/kg

Action in plant Kills living tissue.

Site of action Group 26: unknown

Chemical family Dithiocarbamate

Koc Average is 10 mL/g (estimated)