, 1, 2, 2-tetrachloroethane (TeCA), also known by the brand names Bonoform, Cellon and Westron, is an organic compound. It is colorless liquid and has a sweet odor. It is used as an industrial solvent and as a separation agent. TeCA is toxic and it can be inhaled, consumed or absorbed through the skin. After exposure, nausea, dizziness or even liver damage may occur.1, 1, 2, 2-Tetrachloroethane and 1, 1, 1, 2-Tetrachloroethane were discovered by Auguste Laurent in 1836.[4][5] 1, 1, 2, 2-tetrachloroethane was used in large amounts to produce other chemicals like trichloroethylene, tetrachloroethylene, and 1, 2-dichloroethylene.[6] Because of its possible carcinogen effects on humans, the production of 1, 1, 2, 2-tetrachloroethane has decreased significantly and is no longer widely used as an end-product.[7] It is however still generated as a byproduct and as an intermediate product during manufacturing, where low levels of the chemical have been detected in the air.[8] Uses[edit] 1, 1, 2, 2-Tetrachloroethane has been used as an industrial solvent since the 1910s when it was widely used in cellulose acetate "dope" formulations, under the name "Cellon". Its use in dope formulations decreased towards the 1920s as its toxicity became more known. Other uses for the substance include paint stripping, acting as a denaturation agent for alcohol, as a solvent for waxes & varnishes, and in the extraction of oils and degreasing of metals.[9] 1, 1, 2, 2-Tetrachloroethane is currently used as a feedstock in the production of 1, 2-dichloroethylene, trichloroethylene and tetrachloroethylene.