<unk>  is one of the most potent hepatotoxins (toxic to the liver), so much so that it is widely used in scientific research to evaluate hepatoprotective agents. Exposure to high concentrations of<unk>  (including vapor) can affect the central nervous system and degenerate the liver and kidneys, and prolonged exposure may lead to coma or death. Chronic exposure to<unk>  can cause liver and kidney damage and could result in cancer. See safety data sheets. The effects of<unk>  on human health and the environment have been assessed under REACH in 2012 in the context of the substance evaluation by France. In 2008, a study of common cleaning products found the presence of<unk>  in "very high concentrations" (up to 101 mg/m3) as a result of manufacturers' mixing of surfactants or soap with sodium hypochlorite (bleach).<unk>  is also both ozone-depleting and a greenhouse gas. However, since 1992 its atmospheric concentrations have been in decline for the reasons described above (see atmospheric concentration graphs in the gallery).<unk>  has an atmospheric lifetime of 85 years. At high temperatures in air, it decomposes or burns to produce poisonous phosgene.
Carbon tetrachloride
Arsenic trichloride
Butylated hydroxytoluene
Tetrachlorodecaoxide
Triphenylchloroethylene
Coal tar
Vinyl chloride
Arsenic trioxide