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For a bodyweight around 70 kg (155 lb.), the lethal dose of arsenic would be closer to a gram than 100 mg. Current Queue | Current Queue for Medicine | Medicine archives Try the links in the MadSci Library for more information on Medicine.
Although plants need boron, too much of it will kill them, so borax can be used as an herbicide. Borax may also be used as an insecticide to kill roaches, ants, and fleas. In fact, it is also toxic to people. Signs of chronic toxic exposure include red and peeling skin, seizures, and kidney failure.The estimated lethal dose (ingested) for adults is 15-20 grams; less than 5 grams can kill a child or pet.y Anne Marie Helmenstine, Ph.D. Borax (also known as sodium borate decahydrate; sodium pyroborate; birax; sodium tetraborate decahydrate; sodium biborate) is a natural mineral compound (Na 2 B 4 O 7 â¢ 10H 2 O). It was discovered over 4000 years ago.