... : P2Zn3Molecular weight: 258.1Properties:Amorphous grey-black powder, with a garlic-like odour . Toxicity: Oral Acute oral ... R50, R53 Uses:Rodenticide (for single ingestion). Reacts with stomach acids to liberate poisonous phosphine, which enters the bloodstream ... oil seeds, expeller cake, nuts, nut kernels, dried fruit, coffee beans, cocoa beans, tea, etc.; and in empty warehouses, silos, packing ...