... fish and aquatic organisms, LD50 for bulltrout 15mg/l (96 h, 72°C). Toxic to bees. Acute oral LD50 of 40 ... .7% chlorpyrifos EC for rats 590mg/kg, acute dermal for rabbits ... LD50>2g/kg, acute inhale LD50>0.007µg/L(7 h), irritation to eyes and skin.Usage: Thiophosphate insecticide; Contact, stomach ...