The toxicity of<unk>  is well studied. Like<unk> ,<unk>  distributes to all body tissues, crossing the blood–brain barrier and the placental barrier, and<unk>  also moves freely throughout the body. Risk assessment for effects on the human nervous system have been made by extrapolating from dose-response relationships for<unk> . Estimates have suggested that<unk>  clears from blood with a half-life of 3–7 days in adult humans; however, this area has not been well studied.
Ethylmercury
Dimethylmercury
Vinyl chloride
Mercury
Lewis lead
Heptachlor
Hydrogen fluoride
Carbon tetrachloride