Trade name(s) Princep, Simazine, Sim-Trol

Manufacturer(s) Drexel, Loveland, Sipcam Agro, Syngenta, WinField

Formulation(s) 80% wettable powder, 4 lb/gal flowable liquid, and 90% water-dispersible granules, 90% dry flowable

Remarks A triazine herbicide used selectively or as a complete vegetation killer. Requires considerable moisture to activate in soil. Shows long residual action.

Water solubility 3.5 ppm

Storage conditions Stable.

Acute toxicity LD50 - 5,000 mg/kg

Action in plant Inhibits photosynthesis.

Site of action Group 5: photosystem II inhibitor

Chemical family Triazine

Koc Average is 130 mL/g