Trade name(s) DSMA Liquid, Weed-E-Rad
Manufacturer(s) Drexel Chemical Co., Monterey
Formulation(s) 64% soluble powder (100% hexahydrate), 3.6 and 7.2 lb/gal soluble concentrate
Remarks An organic, arsenical compound used as a selective contact herbicide applied postemergence. DSMA takes up moisture, so store in a dry place. Use a surfactant to ensure activity.
Water solubility Very soluble
Storage conditions Stable under moderate conditions.
Acute toxicity LD50 - 3,630 mg/kg
Action in plant Unknown
Site of action Group 17: not well understood
Chemical family Organoarsenical
Koc Average is 7000 mL/g (estimated)