Active ingredient: Zinc phosphide
Other name: 'Agzinphos' (Ag Pesticides); 'Commando' (Excel); 'Fokeba' (Vipesco); 'Ratol' (United Phosphorus); 'Rattekal-Plus' (Frunol); 'Zawa' (Sanonda); 'Zinc-Tox' (Aimco)
Formulation: Zinc phosphide 80%
IUPAC name: trizinc diphosphide
CAS No.: 1314-84-7
Molecular weight: 258.1
Molecular formula: P2Zn3
Structural formula: 
Mode of action: Rodenticide (for single ingestion). Reacts with stomach acids to liberate poisonous phosphine, which enters the bloodstream, and results in damage to the liver, kidneys and heart.
Uses: Bait rodenticide for control of rats, mice, voles, ground squirrels, and gophers. Also used in tracking powder form for house mouse control.