A flammable, manufactured liquid that is mainly used to produce vinyl chloride, which is used in a variety of plastic and vinyl products, pipes, construction material and in other industrial uses. In the household, it has been used in pesticides and cleaning products, paint and varnish. It can be introduced to the water supply due to discharge from industrial chemical factories, and improper disposal or accidental spill of the substance on the ground. This organic compound in high doses has been said to produce nervous system disorders, kidney disease, lung effects, and possible immune system effects. Longer-term exposure to lower doses, like in drinking water, has not yet been associated with cancer in humans.

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