[2-(diethylthiophosphor-S-yl)ethyl]diethylammonium hydrogen oxalate

A deadly poison by ingestion and intraperitoneal routes. Human systemic effects may include: headache, giddiness, nervousness, impaired vision, weakness, nausea, cramps, diarrhea, muscular weakness and loss of control, convulsions and coma. Flammable. To extinguish fire, use dry chemical, carbon dioxide, water spray, fog or foam. When heated to decomposition it emits toxic fumes of SOx, POx, and NOx. A cholinesterase inhibitor used as an insecticide.