Use - Pesticide. Materials to Avoid - Acid, alkali. Avoid sources of heat including fire. Will emit toxic fumes of nitrogen, phosphorus and sulfur oxides when heated to decomposition. Highly toxic if ingested or absorbed through the skin.
Caution is advised.
Mephosfolan is a cholinesterase inhibitor. Mental confusion and psychosis may occur. Excessive salivation, nausea, vomiting, anorexia, diarrhea, and abdominal pain may also occur. The heart rate may decrease following oral exposure or increase following dermal exposure. Chest pain may be noted.